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Journal articles on the topic 'Neutral modes'

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Published: 30 May 2022

Last updated: 31 May 2022

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1

Chang, Edmund K. M. "Resonating Neutral Modes of the Eady Model." Journal of the Atmospheric Sciences 49, no. 24 (December 1992): 2452–63. http://dx.doi.org/10.1175/1520-0469(1992)049<2452:rnmote>2.0.co;2.

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2

Schaich, W. L., and John F. Dobson. "Excitation modes of neutral jellium slabs." Physical Review B 49, no. 20 (May 15, 1994): 14700–14707. http://dx.doi.org/10.1103/physrevb.49.14700.

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3

Cai, Mike J., and Frank H. Shu. "Nonaxisymmetric Neutral Modes in Relativistic Disks." Astrophysical Journal 611, no. 2 (August 20, 2004): 1054–67. http://dx.doi.org/10.1086/422385.

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4

Pratt, Lawrence J., M. Susan Lozier, and Natalia Beliakova. "Parcel Trajectories in Quasigeostrophic Jets: Neutral Modes." Journal of Physical Oceanography 25, no. 6 (June 1995): 1451–66. http://dx.doi.org/10.1175/1520-0485(1995)025<1451:ptiqjn>2.0.co;2.

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5

Goswami, Priyanka, S. N. Bhattacharyya, A. Sen, and K. P. Maheshwari. "Stationary modes in a non-neutral plasma." Physics of Plasmas 5, no. 4 (April 1998): 895–901. http://dx.doi.org/10.1063/1.872657.

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6

Stergioulas, Nikolaos, and John L. Friedman. "Nonaxisymmetric Neutral Modes in Rotating Relativistic Stars." Astrophysical Journal 492, no. 1 (January 1998): 301–22. http://dx.doi.org/10.1086/305030.

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7

Pinsukanjana, P. R., E. G. Gwinn, John F. Dobson, E. L. Yuh, N. G. Asmar, M. Sundaram, and A. C. Gossard. "Surface collective modes of non-neutral jellium." Physical Review B 46, no. 11 (September 15, 1992): 7284–87. http://dx.doi.org/10.1103/physrevb.46.7284.

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8

McQuillen, P., J. Castro, and T. C. Killian. "Collective modes in sculpted ultracold neutral plasmas." Journal of Physics: Conference Series 388, no. 12 (November 5, 2012): 122007. http://dx.doi.org/10.1088/1742-6596/388/12/122007.

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9

FABRE, DAVID, and STÉPHANE LE DIZÈS. "Viscous and inviscid centre modes in the linear stability of vortices: the vicinity of the neutral curves." Journal of Fluid Mechanics 603 (April 30, 2008): 1–38. http://dx.doi.org/10.1017/s0022112008000578.

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In a previous paper, We have recently that if the Reynolds number is sufficiently large, all trailing vortices with non-zero rotation rate and non-constant axial velocity become linearly unstable with respect to a class of viscous centre modes. We provided an asymptotic description of these modes which applies away from the neutral curves in the (q, k)-plane, where q is the swirl number which compares the azimuthal and axial velocities, and k is the axial wavenumber. In this paper, we complete the asymptotic description of these modes for general vortex flows by considering the vicinity of the neutral curves. Five different regions of the neutral curves are successively considered. In each region, the stability equations are reduced to a generic form which is solved numerically. The study permits us to predict the location of all branches of the neutral curve (except for a portion of the upper neutral curve where it is shown that near-neutral modes are not centre modes). We also show that four other families of centre modes exist in the vicinity of the neutral curves. Two of them are viscous damped modes and were also previously described. The third family corresponds to stable modes of an inviscid nature which exist outside of the unstable region. The modes of the fourth family are also of an inviscid nature, but their structure is singular owing to the presence of a critical point. These modes are unstable, but much less amplified than unstable viscous centre modes. It is observed that in all the regions of the neutral curve, the five families of centre modes exchange their identity in a very intricate way. For the q vortex model, the asymptotic results are compared to numerical results, and a good agreement is demonstrated for all the regions of the neutral curve. Finally, the case of ‘pure vortices’ without axial flow is also considered in a similar way. In this case, centre modes exist only in the long-wave limit, and are always stable. A comparison with numerical results is performed for the Lamb–Oseen vortex.

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10

Ahmadi, Hamid, Royce S. Bringhurst, and Victor Voth. "Modes of Inheritance of Photoperiodism in Fragaria." Journal of the American Society for Horticultural Science 115, no. 1 (January 1990): 146–52. http://dx.doi.org/10.21273/jashs.115.1.146.

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Genetic analysis of day-neutral (photo-insensitive) cultivars and their derivatives hybridized to standard short-day clones of octoploid strawberries [Fragaria × ananassa Duchn., F. chiloensis (L.) Duchn., and F. virginiana glauca Staudt., x = 7, 2n = 56] revealed that photo-insensitivity is controlled by a single dominant allele of a Mendelian gene. The dominant genetic trait is expressed in hybrids with other Fragaria spp. Intergeneric hybrids of day-neutral Fragaria and short-day Potentilla glandulosa L. and P. fruticosa L. also express photo-insensitivity. The day-neutral genes in European perpetual flowering (photo-insensitive) diploid `Alpine' F. vesca (2N = 14) apparently have evolved independently, since photo-insensitivity is recessive to photo-sensitivity. Native California diploid F. vesca have diverged considerably from European F. vesca. No photo-insensitive diploids have been found among them. Photo-sensitivity in native California F. vesca is controlled by three dominant genes. The origins of day-neutral cultivars of F. × ananassa and the classification of day-neutrality are discussed.

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11

Jenkner, Johannes, and Martin Ehrendorfer. "Resonant Continuum Modes in the Eady Model with Rigid Lid." Journal of the Atmospheric Sciences 63, no. 2 (February 1, 2006): 765–73. http://dx.doi.org/10.1175/jas3649.1.

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Abstract The Eady model with rigid upper lid is considered. The resonant, linearly amplifying solution that exists in the situation of neutral normal modes when an infinitely thin potential vorticity (PV) perturbation is located precisely at the steering level of a zero-PV neutral mode is explicitly derived. This resonant solution is discussed by partitioning the solution into nonzero-PV and zero-PV contributions. It possesses key observed properties of a growing baroclinic structure. The partitioning of the resonant solution clearly demonstrates the existence of modal growth in a short-wave Eady setting. In contrast to the semi-infinite model, a nonamplifying zero-PV contribution is necessary, in addition to the resonant part, to ensure vanishing vertical velocity at both the upper and the lower lid.

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12

Chen, Ning. "The LHC searches for heavy neutral Higgs bosons by jet substructure analysis." International Journal of Modern Physics A 31, no. 33 (November 22, 2016): 1644009. http://dx.doi.org/10.1142/s0217751x16440097.

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The two-Higgs-doublet model contains extra Higgs bosons with mass ranges spanning from several hundred GeV to about 1 TeV. We study the possible experimental searches for the neutral Higgs bosons of [Formula: see text] and [Formula: see text] at the future high-luminosity LHC runs. Besides of the conventional search modes that are inspired by the supersymmetric models, we discuss two search modes which were not quite addressed previously. They are the decay modes of [Formula: see text] and [Formula: see text]. Thanks to the technique of tagging boosted objects of SM-like Higgs bosons and top quarks, we show the improved mass reaches for heavy neutral Higgs bosons with masses up to [Formula: see text]. The modes proposed here are complementary to the conventional experimental searches motivated by the MSSM.

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13

Esfarjani, Keivan, Yuichi Hashi, Jun Onoe, Kazuo Takeuchi, and Yoshiyuki Kawazoe. "Vibrational modes and IR analysis of neutral photopolymerizedC60dimers." Physical Review B 57, no. 1 (January 1, 1998): 223–29. http://dx.doi.org/10.1103/physrevb.57.223.

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14

Walsh, Daniel, and Daniel H. E. Dubin. "Bernstein modes in a non-neutral plasma column." Physics of Plasmas 25, no. 5 (May 2018): 052119. http://dx.doi.org/10.1063/1.5027848.

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15

Biswas, Aritra, and Sanjoy Mandal. "New physics in neutral D → V V modes." International Journal of Modern Physics A 31, no. 34 (December 6, 2016): 1650180. http://dx.doi.org/10.1142/s0217751x16501803.

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We show that it is possible to construct observables to test the existence of new physics in a model independent way for the [Formula: see text] modes using a time-dependent analysis of the neutral [Formula: see text] meson. We show that it is possible to identify whether the NP is due to decay, mixing or a combination of both. We also provide numerical estimates for the polarization amplitudes for the [Formula: see text] mode and show that our analysis is consistent with the present data.

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16

Nefkens, B. M. K., and J. W. Price. "The Neutral Decay Modes of the Eta-Meson." Physica Scripta T99, no. 1 (2002): 114. http://dx.doi.org/10.1238/physica.topical.099a00114.

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17

Amiranashvili, Sh, M. Y. Yu, and L. Stenflo. "Simple modes of thin oblate non-neutral plasmas." Physics of Plasmas 10, no. 5 (May 2003): 1239–42. http://dx.doi.org/10.1063/1.1569488.

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18

Book, David L. "High‐frequency electrostatic modes in non‐neutral plasmas." Physics of Plasmas 2, no. 5 (May 1995): 1398–403. http://dx.doi.org/10.1063/1.871460.

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19

Neil Rasband, S., and Ross L. Spencer. "Modes and quasi-modes for m=1,2 in a gyrokinetic model for a non-neutral plasma." Physics of Plasmas 6, no. 5 (May 1999): 1435–41. http://dx.doi.org/10.1063/1.873394.

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20

SHAIKH, DASTGEER. "Dynamics of Alfvén waves in partially ionized astrophysical plasmas." Journal of Plasma Physics 76, no. 3-4 (December 18, 2009): 305–15. http://dx.doi.org/10.1017/s0022377809990493.

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AbstractWe develop a two dimensional, self-consistent, compressible fluid model to study evolution of Alfvenic modes in partially ionized astrophysical and space plasmas. The partially ionized plasma consists mainly of electrons, ions and significant neutral atoms. The nonlinear interactions amongst these species take place predominantly through direct collision or charge exchange processes. Our model uniquely describe the interaction processes between two distinctly evolving fluids. In our model, the electrons and ions are described by a single-fluid compressible magnetohydrodynamic (MHD) model and are coupled self-consistently to the neutral fluid via compressible hydrodynamic equations. Both plasma and neutral fluids are treated with different energy equations that adequately enable us to monitor non-adiabatic and thermal energy exchange processes between these two distinct fluids. Based on our self-consistent model, we find that the propagation speed of Alfvenic modes in space and astrophysical plasma is slowed down because these waves are damped predominantly due to direct collisions with the neutral atoms. Consequently, energy transfer takes place between plasma and neutral fluids. We describe the mode coupling processes that lead to the energy transfer between the plasma and neutral and corresponding spectral features.

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21

Wettlaufer, J. S. "Singular behavior of the neutral modes during directional solidification." Physical Review A 46, no. 10 (November 1, 1992): 6568–78. http://dx.doi.org/10.1103/physreva.46.6568.

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22

Etienne, Rampal S., M. Emile F. Apol, Han Olff, and Franz J. Weissing. "Modes of speciation and the neutral theory of biodiversity." Oikos 116, no. 2 (February 2007): 241–58. http://dx.doi.org/10.1111/j.0030-1299.2007.15438.x.

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23

Sen, A. K., R. Singh, A. Sen, and P. K. Kaw. "Feedback control of tearing modes via modulated neutral beams." Physics of Plasmas 4, no. 9 (September 1997): 3217–21. http://dx.doi.org/10.1063/1.872463.

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24

Ferraro, D., A. Braggio, N. Magnoli, and M. Sassetti. "Neutral modes' edge state dynamics through quantum point contacts." New Journal of Physics 12, no. 1 (January 15, 2010): 013012. http://dx.doi.org/10.1088/1367-2630/12/1/013012.

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25

Shaikh, A. A., and A. C. Das. "New low-frequency electromagnetic modes associated with neutral dynamics in partially ionised plasma." Annales Geophysicae 31, no. 5 (May 28, 2013): 983–93. http://dx.doi.org/10.5194/angeo-31-983-2013.

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Abstract. We have investigated the low frequency electromagnetic (EM) modes in inhomogeneous, magnetised partially ionised plasma by incorporating neutral dynamics. We have derived a general EM dispersion relation by using a two-fluids magnetohydrodynamics (MHD) model. Our analysis shows that the neutral dynamics is playing an extremely important role in the physics of magnetised partially ionised plasma by giving rise to new kind of EM modes. We found (1) the new instability is linked with compressibility of neutral particles, the collision between neutral and charged species and the relative streaming in hot/cold, inhomogeneous, magnetised partially ionised plasma, (2) and that neutral dynamics is responsible for the modified (complex) inertial effect on magnetic field lines. Its consequences on the propagation characteristics of Alfvén wave and cyclotron frequency are discussed. Furthermore, a new mode similar to the Langmuir mode is reported. Finally, we discuss our results, for limiting cases, that may be appropriate for applications to space plasma environments including probable mechanism of escaping H+ and O− from the Martian atmosphere.

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26

Craig, I. J. D. "The Evolution of Disturbed Neutral Point Equilibria." Publications of the Astronomical Society of Australia 9, no. 2 (1991): 225–28. http://dx.doi.org/10.1017/s1323358000023924.

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AbstractWe consider the linear and non-linear evolution of a perturbed X-type neutral point. A semi-analytic treatment is given for the case of small disturbances of the equilibrium field. This problem admits well defined azimuthal modes which allow a formally exact determination of the magnetic annihilation rate. It is shown that the longest lived modes are purely radial and decay of the timescale τ ≈ |ln η| where η defines the resistivity of the coronal plasma. Higher azimuthal modes decay much faster, generally on a fraction (O(m−1)) of the Alfvén timescale for the outer field.We go on to perform finite amplitude calculations that demonstrate the implosive current build-up that precedes the reconnective phase of the relaxation. In general both linear and non-linear studies support the idea of an initial implosive stage which rapidly releases the bulk of the energy associated with arbitrary field disturbances.

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27

BLENNERHASSETT, P. J., and ANDREW P. BASSOM. "The linear stability of flat Stokes layers." Journal of Fluid Mechanics 464 (August 10, 2002): 393–410. http://dx.doi.org/10.1017/s0022112002001052.

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The linear stability of the Stokes layer generated by an oscillating flat plate is investigated using Floquet theory. The results obtained include the behaviour of the growth rate of the disturbances, part of the corresponding neutral curve and the structure of neutrally stable disturbances. Previously unknown properties of the growth rate cause the neutral curve to have a complicated geometry: the majority of the marginal curve is defined by waves propagating relative to the basic flow and the curve is smooth in character, but for certain very narrow bands of wavenumbers it was found that stationary modes are the first to become unstable. This phenomenon has the consequence that the underlying smooth neutral curve is punctuated by thin finger-like features. The structure of the eigenfunctions showed that the neutrally stable disturbances tend to grow most rapidly just after the wall velocity passes through zero.

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28

Morsink, Sharon M., Nikolaos Stergioulas, and Steve R. Blattnig. "Quasi‐normal Modes of Rotating Relativistic Stars: Neutral Modes for Realistic Equations of State." Astrophysical Journal 510, no. 2 (January 10, 1999): 854–61. http://dx.doi.org/10.1086/306630.

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29

Noble, Robert, Dominik Burri, Cécile Le Sueur, Jeanne Lemant, Yannick Viossat, Jakob Nikolas Kather, and Niko Beerenwinkel. "Spatial structure governs the mode of tumour evolution." Nature Ecology & Evolution 6, no. 2 (December 23, 2021): 207–17. http://dx.doi.org/10.1038/s41559-021-01615-9.

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AbstractCharacterizing the mode—the way, manner or pattern—of evolution in tumours is important for clinical forecasting and optimizing cancer treatment. Sequencing studies have inferred various modes, including branching, punctuated and neutral evolution, but it is unclear why a particular pattern predominates in any given tumour. Here we propose that tumour architecture is key to explaining the variety of observed genetic patterns. We examine this hypothesis using spatially explicit population genetics models and demonstrate that, within biologically relevant parameter ranges, different spatial structures can generate four tumour evolutionary modes: rapid clonal expansion, progressive diversification, branching evolution and effectively almost neutral evolution. Quantitative indices for describing and classifying these evolutionary modes are presented. Using these indices, we show that our model predictions are consistent with empirical observations for cancer types with corresponding spatial structures. The manner of cell dispersal and the range of cell–cell interactions are found to be essential factors in accurately characterizing, forecasting and controlling tumour evolution.

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30

Yu, Lan, Qing Hai Wu, and Hai Yun Bian. "Study on the Performance of Distribution Grid System in Different Neutral Grounded Modes." Applied Mechanics and Materials 101-102 (September 2011): 348–51. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.348.

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In order to reduce grounded current and restrain arc-grounded over voltage during single-phase grounded faults in transmission line and realize fault-line selection, the neutral grounded mode with Peterson coil in parallel with big reactor is proposed in the paper. The simulation and comparative analysis of the performance of the 10 kV distribution grid systems in different neutral grounded modes have been done. The simulation results have shown that the neutral grounded mode via Peterson coil in parallel connection with big resistances can restrain the fault current effectively and it is the best mode.

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31

Venkatachalam, Vivek, Sean Hart, Loren Pfeiffer, Ken West, and Amir Yacoby. "Local thermometry of neutral modes on the quantum Hall edge." Nature Physics 8, no. 9 (August 5, 2012): 676–81. http://dx.doi.org/10.1038/nphys2384.

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32

Strait, E. J., W. W. Heidbrink, A. D. Turnbull, M. S. Chu, and H. H. Duong. "Stability of neutral beam driven TAE modes in DIII-D." Nuclear Fusion 33, no. 12 (December 1993): 1849–70. http://dx.doi.org/10.1088/0029-5515/33/12/i07.

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33

Bid, Aveek, N. Ofek, H. Inoue, M. Heiblum, C. L. Kane, V. Umansky, and D. Mahalu. "Observation of neutral modes in the fractional quantum Hall regime." Nature 466, no. 7306 (July 2010): 585–90. http://dx.doi.org/10.1038/nature09277.

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34

McCarthy, D. R., S. P. Tucker, S. I. Krasheninnikov, and P. J. Catto. "Nonlocal Linear Theory of Neutral Driven Modes Near the Divertor." Contributions to Plasma Physics 38, no. 1-2 (1998): 201–6. http://dx.doi.org/10.1002/ctpp.2150380130.

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35

Fauve, Stéphan. "Effect of neutral modes on the order of a transition." Comptes Rendus. Mécanique 348, no. 6-7 (November 16, 2020): 475–87. http://dx.doi.org/10.5802/crmeca.21.

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36

Walton, Andrew G. "The stability of nonlinear neutral modes in Hagen–Poiseuille flow." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 461, no. 2055 (March 8, 2005): 813–24. http://dx.doi.org/10.1098/rspa.2004.1428.

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The nonlinear stability of Hagen–Poiseuille flow through a pipe of circular crosssection subjected to non–symmetric disturbances is studied asymptotically at large Reynolds number. By introducing unsteady effects into the nonlinear critical layer, an evolution equation for the disturbance amplitude is derived and is found to possess an equilibrium solution first identified by Smith and Bodonyi. This solution is shown to provide a threshold amplitude, above which, on this scaling, perturbations experience finite–time blow–up, while, below the threshold, disturbances of all wavenumbers decay to zero.

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37

He, Hongd, J. Q. Dong, Zhixion He, and K. Zhao. "Fishbone Modes in Plasmas with Dual Neutral Beam Injection Heating." Fusion Science and Technology 70, no. 1 (July 2016): 54–61. http://dx.doi.org/10.13182/fst15-169.

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38

Tinkle, M. D., R. G. Greaves, C. M. Surko, R. L. Spencer, and G. W. Mason. "Low-order modes as diagnostics of spheroidal non-neutral plasmas." Physical Review Letters 72, no. 3 (January 17, 1994): 352–55. http://dx.doi.org/10.1103/physrevlett.72.352.

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39

Lesur, Maxime, Julien Médina, Makoto Sasaki, and Akihiro Shimizu. "Subcritical Instabilities in Neutral Fluids and Plasmas." Fluids 3, no. 4 (November 2, 2018): 89. http://dx.doi.org/10.3390/fluids3040089.

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In neutral fluids and plasmas, the analysis of perturbations often starts with an inventory of linearly unstable modes. Then, the nonlinear steady-state is analyzed or predicted based on these linear modes. A crude analogy would be to base the study of a chair on how it responds to infinitesimaly small perturbations. One would conclude that the chair is stable at all frequencies, and cannot fall down. Of course, a chair falls down if subjected to finite-amplitude perturbations. Similarly, waves and wave-like structures in neutral fluids and plasmas can be triggered even though they are linearly stable. These subcritical instabilities are dormant until an interaction, a drive, a forcing, or random noise pushes their amplitude above some threshold. Investigating their onset conditions requires nonlinear calculations. Subcritical instabilities are ubiquitous in neutral fluids and plasmas. In plasmas, subcritical instabilities have been investigated based on analytical models and numerical simulations since the 1960s. More recently, they have been measured in laboratory and space plasmas, albeit not always directly. The topic could benefit from the much longer and richer history of subcritical instability and transition to subcritical turbulence in neutral fluids. In this tutorial introduction, we describe the fundamental aspects of subcritical instabilities in plasmas, based on systems of increasing complexity, from simple examples of a point-mass in a potential well or a box on a table, to turbulence and instabilities in neutral fluids, and finally, to modern applications in magnetized toroidal fusion plasmas.

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40

KELLUM, M. E., and DASTGEER SHAIKH. "Linear modes in the partially ionized heliosphere plasma." Journal of Plasma Physics 77, no. 5 (January 6, 2011): 577–88. http://dx.doi.org/10.1017/s0022377810000759.

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AbstractThe heliosphere is predominantly a partially ionized plasma that consists of electrons, ions and significant neutral atoms. Nonlinear interactions among these species take place through direct collision or charge-exchange processes. These interactions modify linear and nonlinear properties of the plasma. In this work, we develop a one-dimensional linear theory to investigate linear instabilities in such a system. In our model, the electrons and ions are described by a single fluid compressible magnetohydrodynamic (MHD) model and are coupled self-consistently to the neutral fluid via compressible hydrodynamic equations. The coupling is mediated by the charge-exchange process. Based on our self-consistent analysis, we find that the charge-exchange coupling is more effective at larger length scales, and the Alfvén waves are not affected by the charge-exchange coupling. By contrast, the fast and slow waves are driven linearly unstable.

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41

Zhang, Yunfeng, and Hourong Pan. "The Research of High Voltage Auxiliary Power System Neutral Point Grounding Modes between the Nuclear Power Plant and Conventional Fossil Fuel Power Plant." World Construction 4, no. 4 (December 28, 2015): 15. http://dx.doi.org/10.18686/wcj.v4i4.3.

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<p>Currently, in power plants, the application of the extinction coil in high voltage auxiliary power system neutral point is less experienced. A research done on nuclear power plant and conventional fossil fuel power plant proved that using an auxiliary power system’s different characteristics was leading to different demands of the grounding modes. Thus, this research was done by selecting the grounding mode of high voltage auxiliary power system neutral point on the main nuclear power plants and the partial fossil fuel power plants together with the calculation of practical engineering, and optimal design schemes. The high voltage auxiliary power system neutral point grounding modes have been induced in the large-scale into the nuclear power plant and the conventional fossil fuel power plant. Methods in determining the neutral point grounding modes are used by analyzing the principles commonly used grounding modes and requirements of related codes. First, choose the suitable grounding mode according to the calculation result of capacitive current. Then, choose more conducive grounding mode to the operation of power plant according to the operation of technology equipment. The power is required from the configuration, connection of auxiliary power and the cut from the accident of auxiliary power. As some power plants which are under-construction will be putting into operation one after another, the whole set of perfect security arrangements and operating experiences will also be accumulated inevitably. As a conclusion, high voltage auxiliary power system neutral point grounding modes directly affect the running of the auxiliary power system and even affect the security of the nuclear safety and the operation of the power plant. I hope this article can play a role for reference on the selection of the auxiliary power system grounding modes.</p>

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42

Zhang, Yunfeng, and Hourong Pan. "The Research of High Voltage Auxiliary Power System Neutral Point Grounding Modes between the Nuclear Power Plant and Conventional Fossil Fuel Power Plant." World Construction 4, no. 4 (December 28, 2015): 15. http://dx.doi.org/10.18686/wc.v4i4.13.

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<p>Currently, in power plants, the application of the extinction coil in high voltage auxiliary power system neutral point is less experienced. A research done on nuclear power plant and conventional fossil fuel power plant proved that using an auxiliary power system’s different characteristics was leading to different demands of the grounding modes. Thus, this research was done by selecting the grounding mode of high voltage auxiliary power system neutral point on the main nuclear power plants and the partial fossil fuel power plants together with the calculation of practical engineering, and optimal design schemes. The high voltage auxiliary power system neutral point grounding modes have been induced in the large-scale into the nuclear power plant and the conventional fossil fuel power plant. Methods in determining the neutral point grounding modes are used by analyzing the principles commonly used grounding modes and requirements of related codes. First, choose the suitable grounding mode according to the calculation result of capacitive current. Then, choose more conducive grounding mode to the operation of power plant according to the operation of technology equipment. The power is required from the configuration, connection of auxiliary power and the cut from the accident of auxiliary power. As some power plants which are under-construction will be putting into operation one after another, the whole set of perfect security arrangements and operating experiences will also be accumulated inevitably. As a conclusion, high voltage auxiliary power system neutral point grounding modes directly affect the running of the auxiliary power system and even affect the security of the nuclear safety and the operation of the power plant. I hope this article can play a role for reference on the selection of the auxiliary power system grounding modes.</p>

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43

Khanna, Udit, Moshe Goldstein, and Yuval Gefen. "Edge reconstruction and emergent neutral modes in integer and fractional quantum Hall phases." Low Temperature Physics 48, no. 5 (May 2022): 420–27. http://dx.doi.org/10.1063/10.0010207.

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This paper comprises a review of our recent works on fractional chiral modes that emerge due to edge reconstruction in integer and fractional quantum Hall (QH) phases. The new part added is an analysis of edge reconstruction of the ν = 2/5 phase. QH states are topological phases of matter featuring chiral gapless modes at the edge. These edge modes may propagate downstream or upstream and may support either charge or charge-neutral excitations. From topological considerations, particle-like QH states are expected to support only downstream charge modes. However the interplay between the electronic repulsion and the boundary confining potential may drive certain quantum phase transitions (called reconstructions) at the edge, which are associated to the nucleation of additional pairs of counter-propagating modes. Employing variational methods, here we study edge reconstruction in the prototypical particle-like phases at ν = 1, 1/3, and 2/5 as a function of the slope of the confining potential. Our analysis shows that subsequent renormalization of the edge modes, driven by disorder-induced tunnelling and intermode interactions, may lead to the emergence of upstream neutral modes. These predictions may be tested in suitably designed transport experiments. Our results are also consistent with previous observations of upstream neutral modes in these QH phases and could explain the absence of anyonic interference in electronic Mach-Zehnder setups.

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Mouillot, David, and Kevin J. Gaston. "Geographical range size heritability: what do neutral models with different modes of speciation predict?" Global Ecology and Biogeography 16, no. 3 (May 2007): 367–80. http://dx.doi.org/10.1111/j.1466-8238.2007.00292.x.

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Bufalo, R., and M. Ghasemkhani. "Three-dimensional noncommutative Yukawa theory: Induced effective action and propagating modes." International Journal of Modern Physics A 32, no. 04 (February 9, 2017): 1750019. http://dx.doi.org/10.1142/s0217751x17500191.

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In this paper, we establish the analysis of noncommutative Yukawa theory, encompassing neutral and charged scalar fields. We approach the analysis by considering carefully the derivation of the respective effective actions. Hence, based on the obtained results, we compute the one-loop contributions to the neutral and charged scalar field self-energy, as well as to the Chern–Simons polarization tensor. In order to properly define the behavior of the quantum fields, the known UV/IR mixing due to radiative corrections is analyzed in the one-loop physical dispersion relation of the scalar and gauge fields.

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Kaiser, U., and J. C. Huneke. "Fundamentals of Sputtered Neutral Mass Spectrometry." MRS Bulletin 12, no. 6 (September 1987): 48–51. http://dx.doi.org/10.1557/s0883769400067221.

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AbstractSputtered neutral mass spectrometry (SNMS) is a technique for elemental and isotopic analysis with excellent detection limits, with similar sensitivity for all elements and without substantial matrix effects. Particles sputter atomized from the sample surface are ionized and mass spectrometrically measured. Elemental detection limits are routinely 1–10 ppm, but can be as low as 1–10 ppb. Particular modes of SNMS enable the measurement of accurate concentration depth profiles with resolutions approaching 20 Å and the measurement of electrically insulating samples.

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Tam, Christopher K. W., and Fang Q. Hu. "The instability and acoustic wave modes of supersonic mixing layers inside a rectangular channel." Journal of Fluid Mechanics 203 (June 1989): 51–76. http://dx.doi.org/10.1017/s0022112089001370.

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At high supersonic convective Mach numbers the familiar Kelvin-Helmholtz instability of a thin unconfined two-dimensional shear layer becomes neutrally stable. In this paper, it is shown that when the same shear layer is put inside a rectangular channel the coupling between the motion of the shear layer and the acoustic modes of the channel produces new two-dimensional instability waves. The instability mechanism of these waves is examined. Extensive numerical computation of the properties of these new instability waves has been carried out. Based on these results two classes of these waves are identified. Some of the important characteristic features of these waves are reported in this paper. In addition to the unstable waves, a thorough analysis of the normal modes of a supersonic shear layer inside a rectangular channel reveals that there are basically two other families of neutral acoustic waves. Examples of some of the prominent characteristics of these neutral acoustic waves are also provided in this paper. The new instability waves are the dominant instabilities of a confined mixing layer at high supersonic convective Mach number. As such they are very relevant to the supersonic mixing and combustion processes inside a ramjet engine combustion chamber.

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Smagulova, K. K., and U. K. Iskakov. "Simulation Modes Of Relay Protection Devices In Networks With Insulated Neutral." EAI Endorsed Transactions on Energy Web 4, no. 15 (December 13, 2017): 153468. http://dx.doi.org/10.4108/eai.13-12-2017.153468.

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Gan, K. K., G. S. Abrams, D. Amidei, A. R. Baden, T. Barklow, A. M. Boyarski, J. Boyer, et al. "Study ofτdecay modes with multiple neutral mesons in the final states." Physical Review Letters 59, no. 4 (July 27, 1987): 411–14. http://dx.doi.org/10.1103/physrevlett.59.411.

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Bezverbny, Aleksandr V., Vladimir G. Niz'ev, and Anatolii M. Tumaikin. "Dipole traps for neutral atoms formed by nonuniformly polarised Laguerre modes." Quantum Electronics 34, no. 7 (July 31, 2004): 685–89. http://dx.doi.org/10.1070/qe2004v034n07abeh002826.

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