Zaloguj się

Gotowe bibliografie tematyczne / Electrostatic ion cyclotron / Artykuły w czasopismach

Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: Electrostatic ion cyclotron.

Artykuły w czasopismach na temat „Electrostatic ion cyclotron”

Autor: Grafiati

Data publikacji: 6 września 2023

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych artykułów w czasopismach naukowych na temat „Electrostatic ion cyclotron”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj artykuły w czasopismach z różnych dziedzin i twórz odpowiednie bibliografie.

1

Sharma, Shatendra, i Jyotsna Sharma. "Spiraling ion beam driven electrostatic ion cyclotron wave instabilities in collisionless dusty plasma". International Journal of Modern Physics: Conference Series 32 (styczeń 2014): 1460352. http://dx.doi.org/10.1142/s2010194514603524.

Pełny tekst źródła

Streszczenie:

The numerical calculations of the growth rate in long parallel wavelength are made for a spiraling ion beam propagating through a collision less magnetized dusty plasma cylinder that drives electrostatic ion cyclotron waves to instability via cyclotron interaction. It is found that the growth rate of the instability of the electrostatic ion cyclotron waves increase in the long parallel limit with the density ratio of negatively charged dust grains to electrons. The growth rate of the unstable mode has the maximum value for the modes whose Eigen functions peak at the location of the beam and varies as the one-third power of the beam current in both the limits.

Style APA, Harvard, Vancouver, ISO itp.

2

Pokhotelov, O. A., L. Stenflo i P. K. Shukla. "Nonlinear interaction of electrostatic ion-cyclotron and drift waves in plasmas". Journal of Plasma Physics 56, nr 1 (sierpień 1996): 187–91. http://dx.doi.org/10.1017/s0022377800019176.

Pełny tekst źródła

Streszczenie:

Model equations describing the nonlinear coupling between electrostatic ion-cyclotron and drift waves are derived, taking into account the action of the low-frequency ponderomotive force associated with the ion-cyclotron waves. It is found that this interaction is governed by a pair of equations, which can be used for studying the modulational instability of a constant amplitude ion-cyclotron wave as well as the dynamics of nonlinearly coupled ion-cyclotron and drift waves.

Style APA, Harvard, Vancouver, ISO itp.

3

Sharma, S. C., i V. K. Tripathi. "Excitation of ion-cyclotron waves by a spiralling ion beam in a plasma cylinder". Journal of Plasma Physics 50, nr 2 (październik 1993): 331–38. http://dx.doi.org/10.1017/s0022377800027112.

Pełny tekst źródła

Streszczenie:

A helical ion beam propagating through a plasma cylinder drives electrostatic ion-cyclotron waves to instability via cyclotron interaction. Higher harmonics of the beam cyclotron frequency can be generated in this way. The growth rate increases with the harmonic number. The efficiency of beam energy transfer to the wave can be of the order of a few per cent.

Style APA, Harvard, Vancouver, ISO itp.

4

ISHIGURO, SEIJI, TETSUYA SATO, HISANORI TAKAMARU i Complexity Simulation Group. "Open boundary particle simulation of electrostatic ion cyclotron instability". Journal of Plasma Physics 61, nr 3 (kwiecień 1999): 407–14. http://dx.doi.org/10.1017/s0022377899007539.

Pełny tekst źródła

Streszczenie:

We have developed a 2½-dimensional open boundary particle simulation model and have studied the current-driven electrostatic ion-cyclotron instability and related d.c. potential difference. Fresh streaming electrons are injected smoothly from the boundaries at each time step, avoiding unphysical accumulation of charged particles in front of the boundaries. As a current-driven electrostatic ion cyclotron instability grows, a d.c. potential difference along the magnetic field lines is created.

Style APA, Harvard, Vancouver, ISO itp.

5

McWilliams, R., M. K. Okubo i N. S. Wolf. "Electrostatic ion cyclotron instability near threshold". Physics of Fluids 29, nr 9 (wrzesień 1986): 3031–35. http://dx.doi.org/10.1063/1.865464.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

6

Lemons, D. S., D. Winske i S. P. Gary. "Electrostatic ion cyclotron velocity shear instability". Journal of Geophysical Research 97, A12 (1992): 19381. http://dx.doi.org/10.1029/92ja01735.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

7

Hasan, Zehra, i S. Guha. "Parametric excitation of a kinetic Alfvén wave at the ion-cyclotron frequency". Journal of Plasma Physics 43, nr 3 (czerwiec 1990): 457–63. http://dx.doi.org/10.1017/s0022377800014902.

Pełny tekst źródła

Streszczenie:

The parametric decay of an electrostatic ion-cyclotron wave into a low-frequency mixed-mode (EM-ES) kinetic Alvén wave and an electrostatic ion-cyclotron side-band has been investigated in a homogeneous low-β plasma. A nonlinear dispersion relation describing this parameteric interaction is derived. The partially electrostatic nature of the kinetic Alfvén wave and the component of the low-frequency ponderomotive force along the direction of the external magnetic field lead to the dominant coupling. Possible applications in the ionosphere, in the earth's magnetosphere and in laboratory plasmas are discussed.

Style APA, Harvard, Vancouver, ISO itp.

8

Chow, V. W., i M. Rosenberg. "Electrostatic ion cyclotron instabilities in negative ion plasmas". Physics of Plasmas 3, nr 4 (kwiecień 1996): 1202–11. http://dx.doi.org/10.1063/1.871744.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

9

Crocker, N. A., S. X. Tang, K. E. Thome, J. B. Lestz, E. V. Belova, A. Zalzali, R. O. Dendy i in. "Novel internal measurements of ion cyclotron frequency range fast-ion driven modes". Nuclear Fusion 62, nr 2 (5.01.2022): 026023. http://dx.doi.org/10.1088/1741-4326/ac3d6a.

Pełny tekst źródła

Streszczenie:

Abstract Novel internal measurements and analysis of ion cyclotron frequency range fast-ion driven modes in DIII-D are presented. Observations, including internal density fluctuation ( n ~ ) measurements obtained via Doppler backscattering, are presented for modes at low harmonics of the ion cyclotron frequency localized in the edge. The measurements indicate that these waves, identified as coherent ion cyclotron emission (ICE), have high wave number, k ⊥ ρ fast ≳ 1, consistent with the cyclotron harmonic wave branch of the magnetoacoustic cyclotron instability, or electrostatic instability mechanisms. Measurements show extended spatial structure (at least ∼1/6 the minor radius). These edge ICE modes undergo amplitude modulation correlated with edge localized modes (ELM) that is qualitatively consistent with expectations for ELM-induced fast-ion transport.

Style APA, Harvard, Vancouver, ISO itp.

10

SORASIO, G., i M. ROSENBERG. "Instability of higher-harmonic electrostatic dust cyclotron waves". Journal of Plasma Physics 65, nr 4 (maj 2001): 319–29. http://dx.doi.org/10.1017/s0022377801001118.

Pełny tekst źródła

Streszczenie:

Conditions for exciting higher-harmonic electrostatic dust cyclotron waves in a collisional dusty plasma are investigated. Linear kinetic theory is used, and the effects of neutral–charged particle collisions are taken into account. In a plasma with negatively charged dust, electrostatic dust cyclotron waves can be driven unstable by ions drifting along the magnetic field. It is found that, under certain conditions, the critical ion drift for the excitation of higher-harmonic electrostatic dust cyclotron waves (i.e., ω ∼ mΩd, where m [ges ] 2 and Ωd is the dust cyclotron frequency) can be comparable to the critical drift for the excitation of the fundamental cyclotron harmonic (i.e., ω ∼ Ωd). Stability conditions are investigated for ranges of parameters that may be relevant to laboratory dusty plasmas.

Style APA, Harvard, Vancouver, ISO itp.

11

Reddy, R. V., G. S. Lakhina, N. Singh i R. Bharuthram. "Spiky parallel electrostatic ion cyclotron and ion acoustic waves". Nonlinear Processes in Geophysics 9, nr 1 (28.02.2002): 25–29. http://dx.doi.org/10.5194/npg-9-25-2002.

Pełny tekst źródła

Streszczenie:

Abstract. One of the interesting observations from the FAST satellite is the detection of strong spiky waveforms in the parallel electric field in association with ion cyclotron oscillations in the perpendicular electric fields. We report here an analytical model of the coupled nonlinear ion cyclotron and ion-acoustic waves, which could explain the observations. Using the fluid equations for the plasma consisting of warm electrons and cold ions, a nonlinear wave equation is derived in the rest frame of the propagating wave for any direction of propagation oblique to the ambient magnetic field. The equilibrium bulk flow of ions is also included in the model to mimic the field-aligned current. Depending on the wave Mach number M defined by M = V/Cs with V and Cs being the wave phase velocity and ion-acoustic speed, respectively, we find a range of solutions varying from a sinusoidal wave form for small amplitudes and low M to sawtooth and highly spiky waveforms for nearly parallel propagation. The results from the model are compared with the satellite observations.

Style APA, Harvard, Vancouver, ISO itp.

12

Boardsen, S. A., D. A. Gurnett i W. K. Peterson. "Double-peaked electrostatic ion cyclotron harmonic waves". Journal of Geophysical Research 95, A7 (1990): 10591. http://dx.doi.org/10.1029/ja095ia07p10591.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

13

Chow, V. W., i M. Rosenberg. "Electrostatic ion cyclotron instability in dusty plasmas". Planetary and Space Science 43, nr 5 (maj 1995): 613–18. http://dx.doi.org/10.1016/0032-0633(94)00134-d.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

14

SHUKLA, P. K., i A. A. MAMUN. "Low-frequency electrostatic waves in a bounded dusty magnetoplasma". Journal of Plasma Physics 65, nr 2 (luty 2001): 97–105. http://dx.doi.org/10.1017/s0022377801008698.

Pełny tekst źródła

Streszczenie:

A rigorous theoretical investigation is made of obliquely propagating low-frequency electrostatic waves in a cylindrically bounded magnetized dusty plasma. A number of different modes, such as modified convective cells, coupled ion-cyclotron and dust-ion-acoustic waves, modified lower-hybrid waves, coupled dust-cyclotron and dust-acoustic waves, etc., are investigated. It is shown that the effects of the cylindrical boundary of the dusty plasma system, the external magnetic field, and the obliqueness (of the propagating modes) significantly modify the dispersion properties of these different low-frequency electrostatic waves. The implications of our results for laboratory dusty magnetoplasmas are briefly pointed out.

Style APA, Harvard, Vancouver, ISO itp.

15

Ristic-Djurovic, Jasna, Sasa Cirkovic i Djordje Kosutic. "Beam stripping extraction from the VINCY cyclotron". Nuclear Technology and Radiation Protection 21, nr 1 (2006): 21–28. http://dx.doi.org/10.2298/ntrp0601021r.

Pełny tekst źródła

Streszczenie:

The extraction system of a cyclotron guides an ion beam from a spiral acceleration orbit, through an extraction trajectory, into a high energy transport line. The two methods commonly used to direct an ion into the extraction path are deflection, by the electric field of an electrostatic deflector, and ion stripping, by a thin carbon foil. Compared to the electrostatic deflector system, the stripping extraction provides a fast and easy change of the extracted ion energy and is easier to manufacture operate, and maintain. However, the extraction trajectory and dynamics of an ion beam after stripping are highly dependant on the ion energy and specific charge. Thus, when a multipurpose machine such as the VINCY Cyclotron is concerned, it is far from easy to deliver a variety of ion beams into the same high energy transport line and at the same time preserve a reasonable compactness of the extraction system. The front side stripping extraction system of the VINCY Cyclotron provides high (~70 MeV) and mid (~30 MeV) energy protons, as well as a number of heavy ions in broad energy ranges. The back side stripping extraction system extracts low energy protons (~18 MeV) and enables their simultaneous use with high energy protons at the front side of the machine.

Style APA, Harvard, Vancouver, ISO itp.

16

Terasaka, K., i S. Yoshimura. "Plasma–neutral coupling allows electrostatic ion cyclotron waves to propagate below ion cyclotron frequency". Physics of Plasmas 29, nr 2 (luty 2022): 022103. http://dx.doi.org/10.1063/5.0078192.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

17

WANG, Fangping, Heng ZHANG, Sheng ZHANG i Wenshan DUAN. "Investigation of the confinement of high energy non-neutral proton beam in a bent magnetic mirror". Plasma Science and Technology 24, nr 3 (1.03.2022): 035105. http://dx.doi.org/10.1088/2058-6272/ac4b31.

Pełny tekst źródła

Streszczenie:

Abstract By using the particle-in-cell (PIC) simulation method, we studied how the proton beam is confined in a bent magnetic mirror. It is found that the loss rate of the charged particles in a bent mirror is less than that in the axi-symmetric mirror. For a special bent mirror with the deflection angle of the coils α = 45°, it is found that the loss rate reaches maximum value at certain ion number density where the ion electrostatic oscillation frequency is equal to the ion cyclotron frequency. In addition, the loss rate is irrelevant to the direction of the proton beam. Our results may be helpful to devise a mirror. In order to obtain the least loss rate, we may choose an appropriate deflection angle, and have to avoid a certain ion number density at which the ion electrostatic oscillation frequency is equal to the ion cyclotron frequency.

Style APA, Harvard, Vancouver, ISO itp.

18

Suszcynsky, D. M., R. L. Merlino i N. D'Angelo. "Electrostatic ion-cyclotron waves in a two-ion component plasma". IEEE Transactions on Plasma Science 16, nr 3 (czerwiec 1988): 396–98. http://dx.doi.org/10.1109/27.3849.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

19

Y.N. Gavrish, A.V. Galchuck, D.V. Kirzev, Yu.K. Osina i Yu.I. Stogov. "Multicharged ion beam release system from the cyclotron". Technical Physics 68, nr 2 (2023): 279. http://dx.doi.org/10.21883/tp.2023.02.55485.217-22.

Pełny tekst źródła

Streszczenie:

NIIEFA have developed and began manufacturing a cyclotron project for the acceleration of multiple-charged ions to energies regulated in the range of 7.5-15 MeV/nucl. The cyclotron electromagnet is H-shaped. The acceleration system consists of two dees, located in "valleys". Acceleration is performed at even harmonics. Ions are injected from external sources through the axial channel. The classical deflector and magnetic channels extraction system is used. Keywords: cyclotron, multi-charged ion beam release, mass-to-charge ratio, electrostatic deflector, passive magnetic channel, magnetic channel made of permanent magnets, beam emittance, induction gradient.

Style APA, Harvard, Vancouver, ISO itp.

20

Goree, J., M. Ono i K. L. Wong. "Observation of the backward electrostatic ion‐cyclotron wave". Physics of Fluids 28, nr 9 (wrzesień 1985): 2845–47. http://dx.doi.org/10.1063/1.865204.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

21

Goswami, K. S., i S. Bujarbarua. "Theory of slow electrostatic ion cyclotron double layers". Physics Letters A 143, nr 4-5 (styczeń 1990): 255–58. http://dx.doi.org/10.1016/0375-9601(90)90750-i.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

22

Calabretta, Luciano, Alessandra Calanna, Giacomo Cuttone, Grazia D’Agostino, Danilo Rifuggiato i Antonio Domenico Russo. "Overview of the future upgrade of the INFN-LNS superconducting cyclotron". Modern Physics Letters A 32, nr 17 (28.04.2017): 1740009. http://dx.doi.org/10.1142/s0217732317400090.

Pełny tekst źródła

Streszczenie:

The LNS Superconducting Cyclotron, named “Ciclotrone Superconduttore” (CS), has been in operation for more than 20 years. A wide range of ion species from hydrogen to lead, with energy in the range 10 to 80 AMeV, have been delivered to users. The maximum beam power is limited to 100 W due to the beam dissipation on the electrostatic deflectors. To fulfil the demand of users aiming at studying rare processes in nuclear physics, an upgrade of the cyclotron is necessarily intended to increase the intensity of ion beams with mass lower than 40 a.m.u. up to a power 10 kW. This will be achieved by means of extraction by stripping. This solution needs to replace the cryostat including the superconducting coils. The present capability of the cyclotron will be maintained, i.e. all the ion species allowed by the operating diagram will be available, being extracted by electrostatic extraction. In addition to the high power beams for nuclear physics, it will be possible to produce medical radioisotopes like [Formula: see text] using an internal target.

Style APA, Harvard, Vancouver, ISO itp.

23

Pandey, Rama S., i Mukesh Kumar. "Study of Electrostatic Ion-Cyclotron Waves in Magnetosphere of Uranus". 1, nr 1 (17.03.2022): 32–39. http://dx.doi.org/10.26565/2312-4334-2022-1-05.

Pełny tekst źródła

Streszczenie:

In this manuscript, the method of characteristics particle trajectories details used and the dispersion relation for the ionosphere of Uranus were being used to investigate electrostatic ion-cyclotron waves with parallel flow velocity shear in the presence of perpendicular inhomogeneous DC electric field and density gradient. The growth rate has been calculated using the dispersion relation. Electric fields parallel to the magnetic field transmit energy, mass, and momentum in the auroral regions of the planetary magnetosphere by accelerating charged particles to extremely high energies. The rate of heating of plasma species along and perpendicular to the magnetic field is also said to be influenced by the occurrence of ion cyclotron waves and a parallel electric field in the acceleration area.

Style APA, Harvard, Vancouver, ISO itp.

24

Chibisov, D. V., V. S. Mikhailenko i K. N. Stepanov. "Oxygen-ion-beam-driven electrostatic ion cyclotron instability of hydrogen plasma". Physics of Plasmas 16, nr 7 (lipiec 2009): 072902. http://dx.doi.org/10.1063/1.3183595.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

25

Kurian, M. J., S. Jyothi, S. K. Leju, Molly Isaac, Chandu Venugopal i G. Renuka. "Stability of electrostatic ion cyclotron waves in a multi-ion plasma". Pramana 73, nr 6 (grudzień 2009): 1111–22. http://dx.doi.org/10.1007/s12043-009-0171-z.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

26

Cartier, S. L., N. D’Angelo i R. L. Merlino. "Electrostatic ion-cyclotron waves in a nonuniform magnetic field". Physics of Fluids 28, nr 10 (1985): 3066. http://dx.doi.org/10.1063/1.865348.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

27

Koepke, M. E., M. J. Alport, T. E. Sheridan, W. E. Amatucci i J. J. Carroll. "Asymmetric spectral broadening of modulated electrostatic ion-cyclotron waves". Geophysical Research Letters 21, nr 11 (1.06.1994): 1011–14. http://dx.doi.org/10.1029/94gl00175.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

28

Merlino, R. L. "Electrostatic ion-cyclotron waves driven by parallel velocity shear". Physics of Plasmas 9, nr 5 (maj 2002): 1824–25. http://dx.doi.org/10.1063/1.1465418.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

29

Suszcynsky, D. M., S. L. Cartier, R. L. Merlino i N. D'Angelo. "A laboratory study of collisional electrostatic ion cyclotron waves". Journal of Geophysical Research 91, A12 (1986): 13729. http://dx.doi.org/10.1029/ja091ia12p13729.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

30

Popa, G., E. Mravlag i R. Schrittwieser. "On the mechanism of the electrostatic ion cyclotron instability". Plasma Physics and Controlled Fusion 31, nr 12 (1.10.1989): 1863–77. http://dx.doi.org/10.1088/0741-3335/31/12/002.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

31

Alba, S., G. Carbone, M. Fontanesi, A. Galassi, C. Riccardi i E. Sindoni. "Electrostatic ion cyclotron waves in a low magnetized plasma". Plasma Physics and Controlled Fusion 34, nr 2 (1.02.1992): 147–59. http://dx.doi.org/10.1088/0741-3335/34/2/002.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

32

ROSENBERG, M., i V. W. CHOW. "Collisional effects on the electrostatic dust cyclotron instability". Journal of Plasma Physics 61, nr 1 (styczeń 1999): 51–63. http://dx.doi.org/10.1017/s0022377898007247.

Pełny tekst źródła

Streszczenie:

A kinetic analysis of the electrostatic dust cyclotron instability in a weakly ionized collisional dusty plasma is presented. In a plasma with negatively charged dust and a current along the magnetic field B, it is found that the instability can be excited by ions drifting along B. The effect of dust–neutral collisions is stabilizing, while the effect of ion–neutral collisions can be destabilizing. Possible applications to laboratory environments are discussed.

Style APA, Harvard, Vancouver, ISO itp.

33

Milić, B. S. "Excitation of long-wave quasi-perpendicular electrostatic ion-cyclotron waves in multi-species weakly ionized plasmas". Journal of Plasma Physics 43, nr 1 (luty 1990): 23–50. http://dx.doi.org/10.1017/s0022377800014604.

Pełny tekst źródła

Streszczenie:

It is shown, using kinetic equations with BGK model collision integrals, that in a multi-species weakly ionized plasma the quasi-perpendicular ion-cyclotron instability (waves of growing amplitude) excited by the electron drift parallel to the background magnetic field first sets in for long waves (modal wavelengths much larger than the electron mean free path) as the drift is gradually increased, much as in plasmas with only one ion species. Only waves with modal frequencies close to some cyclotron harmonics of some of the ion species present are taken into account in the present work. Owing to the mutual commensurability of all the ion-cyclotron frequencies, more than one species of ions may be ‘resonant’ with any mode of the type considered. The role of ‘resonant’ and ‘non-resonant’ ion species is investigated, both in general and for some particular plasmas. Some numerical details are also given. It is shown that although in most instances the threshold drifts vary monotonically (but not linearly) as the plasma composition is varied, there are cases in which maxima or minima (often depending on the degree of non-isothermality) of the threshold drift magnitude are predicted for some specific plasma compositions. These are usually encountered in plasmas containing ions with different charge numbers.

Style APA, Harvard, Vancouver, ISO itp.

34

Angot, J., O. Tarvainen, P. Chauveau, S. T. Kosonen, T. Kalvas, T. Thuillier, M. Migliore i L. Maunoury. "The longitudinal energy spread of ion beams extracted from an electron cyclotron resonance ion source". Journal of Instrumentation 18, nr 04 (1.04.2023): P04018. http://dx.doi.org/10.1088/1748-0221/18/04/p04018.

Pełny tekst źródła

Streszczenie:

Abstract We present a study of factors affecting the energy spread of ion beams extracted from a Charge Breeder Electron Cyclotron Resonance Ion Source (CB-ECRIS). The comprehensive simulations, supported by experiments with a Retarding Field Analyser (RFA), reveal that the longitudinal and transverse energy spread of the extracted beams are strongly affected by the electrostatic focusing effects, namely the extraction geometry and plasma beam boundary, to the extent that the electrostatic effects dominate over the magnetic field induced rotation of the beam or the effect of plasma potential and ion temperature. The dominance of the electrostatic focusing effect over the magnetic field induced rotation complicates parametric studies of the transverse emittance as a function of the magnetic field strength, and comparison of emittance values obtained with different ion sources having different extraction designs. Our results demonstrate that the full ion beam energy spread, relevant for the downstream accelerator, can be measured with the RFA only when all ions are collected. On the contrary, studying the effect of plasma properties (plasma potential and ion temperature) on the longitudinal energy spread requires heavy collimation of the beam accepting only ions near the symmetry axis of the beam for which the electrostatic and magnetic effects are suppressed. As the extraction system of the CB-ECRIS is similar to a conventional ECRIS, the conclusions of the study can be generalised to apply for all high charge state ECR ion sources. Finally, we present the results of systematic plasma potential measurements of the Phoenix-type CB-ECRIS at LPSC, varying the source potential, the microwave power and the axial magnetic field srength. It was observed that the plasma potential increases with the extraction magnetic field and the microwave power.

Style APA, Harvard, Vancouver, ISO itp.

35

Kim, S. Y. "Ion-driven electrostatic ion-cyclotron instability in the two-electron component plasma". Astrophysics and Space Science 167, nr 1 (1990): 21–27. http://dx.doi.org/10.1007/bf00642059.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

36

Bergmann, Rachelle. "Three-wave coupling coefficient in a drifting bi-Maxwellian plasma". Journal of Plasma Physics 36, nr 1 (sierpień 1986): 97–110. http://dx.doi.org/10.1017/s0022377800011600.

Pełny tekst źródła

Streszczenie:

A general electrostatic coupling coefficient which satisfies the Manley-Rowe relations is used to derive an explicit expression for the resonant three-wave coupling coefficient between electrostatic normal modes of a uniformly magnetized, infinite, homogeneous plasma with species described by drifting bi-Maxwellian distribution functions. The limit of this expression is taken when the phase velocities of the three waves are much larger than a species thermal speed, and also when the phase velocities are much smaller than the thermal speed. These are fluid limits and are applicable to the three-wave interaction between some low-frequency electrostatic waves, such as ion acoustic and ion cyclotron modes, in a plasma where Te ≫ Ti.

Style APA, Harvard, Vancouver, ISO itp.

37

Shi, Chen, Jinsong Zhao, David M. Malaspina, Stuart D. Bale, Xiangcheng Dong, Tieyan Wang i Dejin Wu. "Multiband Electrostatic Waves below and above the Electron Cyclotron Frequency in the Near-Sun Solar Wind". Astrophysical Journal Letters 926, nr 1 (1.02.2022): L3. http://dx.doi.org/10.3847/2041-8213/ac4d37.

Pełny tekst źródła

Streszczenie:

Abstract Using the Parker Solar Probe measurements, this Letter reports two new types of multiband electrostatic waves in and near the heliospheric current sheet. They are classified into the f < f ce and f > f ce multiband electrostatic waves, in which most (or all) of the bands in the former type are lower than f ce, and all of the bands in the latter type are higher than f ce, where f and f ce denotes the wave frequency and the electron cyclotron frequency, respectively. This Letter also exhibits observational evidence of the existence of nonlinear wave–wave interactions of both types of electrostatic waves. In particular, the f > f ce multiband electrostatic waves are found to be modulated in the presence of low-frequency oblique ion-scale waves. According to the observed frequency distribution, this Letter proposes that the mode nature of the f < f ce multiband electrostatic waves could be the oblique ion acoustic wave or the lower-hybrid wave, and the f > f ce multiband electrostatic waves are the electron Bernstein mode wave. These findings provide a challenge to understand the complex electron and ion dynamical processes in and near the heliospheric current sheet.

Style APA, Harvard, Vancouver, ISO itp.

38

SHARMA, JYOTSNA, SURESH C. SHARMA, V. K. JAIN i AJAY GAHLOT. "Higher harmonics generation by a spiraling ion beam in collisionless magnetized plasma". Journal of Plasma Physics 79, nr 5 (11.02.2013): 577–85. http://dx.doi.org/10.1017/s002237781300007x.

Pełny tekst źródła

Streszczenie:

AbstractA spiraling ion beam propagating through a magnetized plasma cylinder containing K+ light positive ions, electrons, and C7F14− heavy negative ions drives electrostatic ion–cyclotron waves to instability via cyclotron interaction. Higher harmonics of the beam cyclotron frequency can be generated in this way. The unstable mode frequencies and growth rates of both unstable light positive ions and heavy negative ions increase with the relative density of heavy negative ions. Moreover, the growth rate of unstable modes scales as the one-third power of the beam density. The growth rate of unstable modes increases with harmonic number. The frequencies of both unstable modes also increase with magnetic fields. In addition, the real part of both unstable modes (K+ and C7F14−) increases with the beam energy and scales as almost one-half power of the beam energy.

Style APA, Harvard, Vancouver, ISO itp.

39

ROSENBERG, M., i R. L. MERLINO. "Instability of higher harmonic electrostatic ion cyclotron waves in a negative ion plasma". Journal of Plasma Physics 75, nr 4 (sierpień 2009): 495–508. http://dx.doi.org/10.1017/s0022377808007642.

Pełny tekst źródła

Streszczenie:

AbstractWe present a kinetic theory analysis of the electrostatic ion cyclotron (EIC) instability in a plasma containing positive ions, electrons, and negative ions that are much more massive than the positive ions. Conditions are investigated for exciting the fundamental and the higher harmonic EIC waves associated with each ion species. We find that as the concentration of heavy negative ions increases, the wave frequencies increase, the unstable spectrum in general shifts to longer perpendicular wavelengths, and the growth of higher harmonic EIC waves tends to increase within certain parameter ranges. Applications to possible laboratory plasmas are discussed.

Style APA, Harvard, Vancouver, ISO itp.

40

Bharuthram, R., i M. A. Hellberg. "Low-frequency drift-induced instabilities in a magnetized two-ion plasma". Journal of Plasma Physics 35, nr 3 (czerwiec 1986): 393–412. http://dx.doi.org/10.1017/s0022377800011429.

Pełny tekst źródła

Streszczenie:

Numerical solutions of a dispersion relation for low-frequency electrostatic waves in a current-carrying, cold, weakly collisional, magnetized two-ion plasma are used to discuss the two-stream and resistive natures of the ion-ion hybrid instability. An instability with analogous behaviour is found to be associated with the light ion cyclotron frequency. Analytical results explain the behaviour. A numerically derived transition diagram summarizes the parameter values for which transitions between different modes take place.

Style APA, Harvard, Vancouver, ISO itp.

41

Rasmussen, J. J., i R. W. Schrittwieser. "On the current-driven electrostatic ion-cyclotron instability: a review". IEEE Transactions on Plasma Science 19, nr 3 (czerwiec 1991): 457–501. http://dx.doi.org/10.1109/27.87228.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

42

Kintner, P. M., W. Scales, J. Vago, R. Arnoldy, G. Garbe i T. Moore. "Simultaneous observations of electrostatic oxygen cyclotron waves and ion conics". Geophysical Research Letters 16, nr 7 (lipiec 1989): 739–42. http://dx.doi.org/10.1029/gl016i007p00739.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

43

D'Angelo, N., i R. L. Merlino. "Electrostatic Ion-Cyclotron Waves in a Plasma with Negative Ions". IEEE Transactions on Plasma Science 14, nr 3 (1986): 285–86. http://dx.doi.org/10.1109/tps.1986.4316545.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

44

Song, Bin, D. Suszcynsky, N. D’Angelo i R. L. Merlino. "Electrostatic ion‐cyclotron waves in a plasma with negative ions". Physics of Fluids B: Plasma Physics 1, nr 12 (grudzień 1989): 2316–18. http://dx.doi.org/10.1063/1.859049.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

45

Barbosa, D. D., W. S. Kurth, I. H. Cairns, D. A. Gurnett i R. L. Poynter. "Electrostatic electron and ion cyclotron harmonic waves in Neptune's magnetosphere". Geophysical Research Letters 17, nr 10 (wrzesień 1990): 1657–60. http://dx.doi.org/10.1029/gl017i010p01657.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

46

Koepke, M. E., i W. E. Amatucci. "Electrostatic ion-cyclotron wave experiments in the WVU Q machine". IEEE Transactions on Plasma Science 20, nr 6 (1992): 631–35. http://dx.doi.org/10.1109/27.199504.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

47

Fasoli, A., M. Fontanesi, A. Galassi, C. Longari i E. Sindoni. "Electrostatic ion cyclotron waves in a steady-state toroidal plasma". Plasma Physics and Controlled Fusion 31, nr 3 (1.03.1989): 313–21. http://dx.doi.org/10.1088/0741-3335/31/3/001.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

48

Niekerk, E. G. Van, P. H. Krumm i M. J. Alport. "Electrostatic ion cyclotron waves driven by a radial electric field". Plasma Physics and Controlled Fusion 33, nr 4 (1.04.1991): 375–88. http://dx.doi.org/10.1088/0741-3335/33/4/008.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

49

McKenzie, J. F., i K. Naidu. "Rossby-type electrostatic electron plasma waves". Journal of Plasma Physics 41, nr 2 (kwiecień 1989): 395–404. http://dx.doi.org/10.1017/s0022377800013945.

Pełny tekst źródła

Streszczenie:

This paper explores the properties of Rossby-type electrostatic electron plasma waves at frequencies very much less than the electron gyrofrequency but very much greater than the ion gyrofrequency. Such waves represent the electron counterpart of ion Rossby waves, which propagate at frequencies very much less than the ion gyrofrequency in a plasma in which the ambient magnetic field possesses a spatial gradient perpendicular to its line of action. This feature simulates the ‘β-effect’ that operates in the classical atmospheric Rossby wave: the wave dynamics associated with both ion and electron Rossby waves are structurally similar to those associated with wave perturbations in a rotating fluid, where the β-effect arises from a spatial gradient in the Coriolis acceleration. It is shown that this plasma β-effect gives rise to a ‘new’ mode of the Rossby type, and in addition considerably modifies the conical wave propagation properties characteristic of the electron cyclotron mode. The highly dispersive and anisotropic nature of these waves is described in terms of the topology of the wavenumber surfaces concomitant with plane-wave solutions of the wave equation for the system as a whole.

Style APA, Harvard, Vancouver, ISO itp.

50

Khorashadizadeh, S. M., M. Barati Moqadam Niyat i A. R. Niknam. "Numerical analysis of electrostatic ion cyclotron instability in an electron-positron-ion plasma". Physics of Plasmas 23, nr 6 (czerwiec 2016): 062102. http://dx.doi.org/10.1063/1.4953094.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!