Relevant bibliographies by topics / Monochromatization

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  2. Dissertations / Theses
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Academic literature on the topic 'Monochromatization'

Author: Grafiati
Published: 25 January 2025

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Journal articles on the topic "Monochromatization"

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ZHOU YUN-SONG, RAN JING-HUI, CHEN JIN-CHANG, and YI XIANG-DONG. "A NEW METHOD OF NEUTRON MONOCHROMATIZATION." Acta Physica Sinica 46, no. 5 (1997): 929. http://dx.doi.org/10.7498/aps.46.929.

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Burdilov, Alexander, Gleb Dovzhenko, Ivan Bataev, and Anatoly Bataev. "Methods of synchrotron radiation monochromatization (research review)." Metal Working and Material Science 26, no. 3 (September 13, 2024): 208–33. http://dx.doi.org/10.17212/1994-6309-2024-26.3-208-233.

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The paper presents an analysis of studies related to the monochromatization of X-ray radiation (XR) at synchrotron radiation sources. A review of monochromators based on of X-ray diffraction on crystals is given, and the peculiarities of their technical realization are considered. The ideas about monochromators which include multilayer structures are examined. The authors also study technical problems arising during designing devices and its possible solutions. Introduction. The possibilities of using X-rays in scientific research are described. The high efficiency of synchrotron radiation sources is noted, and its characterization is given. Elementary information about diffraction of X-rays. The paper describes the properties of X-ray radiation and the possibilities of its using while studying various materials. Degree of monochromaticity. The degree of monochromaticity is an important characteristic of the synchrotron radiation (SR). Depending on the width of the wavelength band, “white”, “pink” and monochromatic beams are distinguished. Monochromators based on multilayer structures are used to obtain “pink” beams. Monochromatic radiation is formed using monocrystals. When conducting experiments with “white” beams, the monochromator is not used. The authors also describe the factors that violate the ideal fulfillment of the Wolf-Bragg condition and affect the degree of monochromaticity (heat, vibration). The reflectivity values at different beam grazing angles are noted to have different widths. Monochromators based on multilayer structures. Periodic structures combining thin layers of two heterogeneous materials make it possible to obtain “pink” beams. The wavelength bandwidth of such devices is one or two orders of magnitude greater than that of monochromators using crystals as optical elements. Configurations and geometry of optical elements. There are two types of X-ray diffraction on a crystal: Bragg and Laue diffraction. Bragg diffraction refers to reflective geometry, Laue diffraction is based on the passage of beams through the crystal. The section provides examples of monochromators with different configurations of crystals and X-ray mirrors. The arrangement of optical elements in a monochromator plays an important role in the geometry of the beam path. When designing monochromators, it is necessary to take into account the methods of fixation and orientation of the rotation axes of optical elements. Examples of monochromators with different configurations of crystals and X-ray mirrors are given. Focusing monochromators. It is possible to provide sagittal and meridional types of deformation by bending the optical element of the monochromator. Due to the curved crystal surface the beam is not only monochromatized but also subjected to focusing. Modern focusing monochromators are equipped with adaptivity elements allowing it to change the radius of curvature of the optical element. Examples of practical realization of such monochromators are presented. Thermal load of SR on optical elements. The SR is characterized by high brightness and a wide spectrum of emitted wavelengths. While operating optical elements of SR stations absorb a large amount of thermal power. The problems of heat dissipation have a fundamental influence on the quality of synchrotron radiation monochromatization. Additional information about monochromators. Examples of special design solutions for monochromators are given. Conclusion. The design of monochromators is relevant to the synchrotron radiation source 4+ “SKIF” under construction in Novosibirsk.
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Jark, Werner. "Concepts for flexible and efficient monochromatization of X-rays by refraction to a relative bandwidth of the order of 0.5%." Journal of Synchrotron Radiation 20, no. 1 (November 10, 2012): 190–93. http://dx.doi.org/10.1107/s0909049512041556.

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Recently it was shown experimentally that regular arrays of tiny prisms can be used as X-ray monochromators providing a spectral bandwidth of below 2%. Successively the measured spectral transmission functions of monochromators operated under different conditions were found to be in agreement with expectations within an analytical model. This type of monochromator focuses chromatically and thus necessitates the use of an exit slit for the monochromatization. This contribution will show that the lower limit for the achievable bandpass can be predicted under practically feasible experimental conditions. Refractive monochromators based on prism arrays are found to be feasible solutions for monochromatization with high transmission to a spectral bandwidth of the order of 0.5%. The bandwidth can easily be increased by adjusting the exit slit setting accordingly. Consequently, the presented refractive devices would make for tunable monochromators with tunable bandwidth, which provides more flexibility for an intermediate bandwidth of <1%, which multilayer monochromators have difficulty providing routinely.
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Sergueev, Ilya, Konstantin Glazyrin, Markus G. Herrmann, Pavel Alexeev, Hans-Christian Wille, Olaf Leupold, Andrew F. May, et al. "High-pressure nuclear inelastic scattering with backscattering monochromatization." Journal of Synchrotron Radiation 26, no. 5 (August 23, 2019): 1592–99. http://dx.doi.org/10.1107/s1600577519008853.

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The capability to perform high-pressure low-temperature nuclear inelastic scattering on 125Te and 121Sb with a sapphire backscattering monochromator is presented. This technique was applied to measure nuclear inelastic scattering in TeO2 at pressures up to 10 GPa and temperatures down to 25 K. The evaluated partial Te densities of phonon states were compared with theoretical calculations and with Raman scattering measured under the same conditions. The high-pressure cell developed in this work can also be used for other techniques at pressures up to at least 100 GPa.
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Surdu-Bob, C. C., and G. Musa. "The kinetics of monochromatization of plasma light emission." Journal of Physics D: Applied Physics 41, no. 17 (August 7, 2008): 172004. http://dx.doi.org/10.1088/0022-3727/41/17/172004.

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Schief, Hansjörg, Vittorio Marsico, Klaus Kuhnke, and Klaus Kern. "Monochromatization of atomic waves by nanoscopic echelette gratings." Surface Science 364, no. 3 (September 1996): L631—L637. http://dx.doi.org/10.1016/0039-6028(96)00794-7.

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Zhang, Hongxia, Juanjuan Liu, Yufeng Zhang, Jinchen Wang, Daye Xu, Peng Cheng, Hongliang Wang, and Wei Bao. "Highly aligned pyrolytic graphite blades for neutron monochromatization." Journal of Instrumentation 19, no. 06 (June 1, 2024): P06036. http://dx.doi.org/10.1088/1748-0221/19/06/p06036.

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Abstract Highly aligned pyrolytic graphite blades for neutron monochromatization have been fabricated successfully from smaller commercial highly oriented pyrolytic graphite (HOPG) crystals. These blades of a large coverage area, 136 mm wide × 2 mm high, are achieved with minimum increase of the mosaic over that of the original HOPG crystal. A specialized crystal cleavage device and soldering device are developed for the fabrication process. Furthermore, an optimized intermittent mode of the radio frequency magnetron sputtering technique is employed to deposit indium on HOPG crystals. The devices and procedure reported here could be applied to the development of the focusing monochromators and analyzers in neutron scattering instruments using a sizable neutron beam.
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Toellner, T. S., A. Alatas, and A. H. Said. "Six-reflection meV-monochromator for synchrotron radiation." Journal of Synchrotron Radiation 18, no. 4 (May 26, 2011): 605–11. http://dx.doi.org/10.1107/s0909049511017535.

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An in-line monochromatization scheme suitable for 10–40 keV synchrotron radiation is presented based on the use of six crystal reflections that achieves meV and sub-meV bandwidths with high efficiency. The theoretical spectral efficiency surpasses all previous multicrystal designs and approaches that of single room-temperature back-reflecting crystals. This article presents the designs of two such devices along with their theoretical and measured performances.
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Cotton, J. P., and J. Teixeira. "Time of flight as a monochromatization technique for sans." Physica B+C 136, no. 1-3 (January 1986): 103–5. http://dx.doi.org/10.1016/s0378-4363(86)80031-6.

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Kozhevnikov, S. V. "Neutron monochromatization using spin-flip and spatial beam splitting." Physica B: Condensed Matter 283, no. 4 (June 2000): 305–7. http://dx.doi.org/10.1016/s0921-4526(00)00320-3.

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Dissertations / Theses on the topic "Monochromatization"

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VIEIRA, MARCO ROGERIO. "DEVELOPING A VERSATILE MONOCHROMATIZATION SYSTEM FOR X-RAYS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=15703@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
FUNDAÇÃO DE APOIO À PESQUISA DO ESTADO DO RIO DE JANEIRO
A investigação da dinâmica da interação de raios-X de alta energia e moléculas de interesse biológico impõe que a energia dos raios-X seja bem definida, de modo que se possa estabelecer a dependência entre os padrões de ionização e fragmentação molecular com a energia do feixe incidente. Com este objetivo, um sistema versátil foi projetado, construído e caracterizado para ser utilizado como monocromador do feixe de amplo espectro produzido por um tubo de raios-X modelo ISOVOLT 160 M2. O sistema de monocromatização consiste de um par de cristais montados sobre duas mesas transladoras fixadas a um goniômetro de alta precisão, fabricados pela Newport Corporation. Esta configuração permite movimentos de translação independentes para os dois cristais, associados a um movimento de rotação do sistema como um todo com respeito à direção de incidência do feixe de raios-X. Estes movimentos, juntamente com uma escolha conveniente do par de cristais para uma dada faixa de energia - o que depende do material e da orientação dos cristais -, permitirão a cobertura de uma região muito extensa de energias de raios-X, de alguns até cerca de 100 kV. Quando este sistema se encontrar totalmente operacional, será possível realizar uma grande variedade de experiências nos campos da Física de Colisões e das Radiações, tais como, fragmentação molecular induzida por raios- X, fluorescência e difração seletivas em cristais, avaliação em tempo real de danos induzidos por raios-X em tecidos biológicos, testes não destrutivos em materiais, dentre muitas outras aplicações.
The investigation of the dynamics of the interaction of high-energy X-rays and molecules of biological interest requires the energy of the X-rays to be well defined, so that one can establish the dependence of the molecular ionization and fragmentation patterns as functions of the incident beam energy. For this purpose, a versatile system for the monochromatization of the broadband beams produced by an ISOVOLT 160M2 X-ray tube has been designed, constructed and characterized. The monochromator consists of a pair of crystals mounted on two translator tables fixed on a high-precision goniometer, all manufactured by Newport Corp. This configuration allows independent translational motions for the two crystals, associated to a rotational motion of the whole system in respect to the direction of the incident X-ray beam. These motions, together with a convenient choice of the pair of crystals for a given energy range - which depends on the material and orientation of the crystals -, will allow us to cover a wide range of X-rays energies, roughly from few to around 100 keV. However, it has not yet been possible to distinguish energy-defined X-ray peaks with the complete two-crystal system. Some of the possible causes may be related to the large angular dispersion of the incident beam and to the need of more accurate adjustments of the parallelism between both crystals. When this system is fully operational, it will be possible to perform a large variety of experiments in the fields of collision and radiation physics, such as, molecular fragmentation by Xrays, selective fluorescence and diffraction in crystals, real-time evaluation of Xray- induced damage in biological tissues, non-destructive testing of materials, among many other aplications.
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Zhang, Zhandong. "Interaction region optics design of a monochromatization scheme for direct s-channel Higgs production at FCC-ee." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP139.

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Le FCC-ee offre la possibilité de mesurer le couplage de Yukawa de l’électron via la production directe du Higgs dans le canal s à une énergie au centre de masse (CM) d’environ 125 GeV. Cette mesure est grandement facilitée si la dispersion en énergie au centre de masse des collisions électron-positron peut être réduite à un niveau comparable à la largeur naturelle du boson de Higgs dans le Modèle Standard, qui est de 4,1 MeV, sans perte substantielle de luminosité. Cette réduction de la dispersion en énergie des collisions est possible grâce au concept de « monochromatisation ». L’idée de base consiste à créer des corrélations opposées entre la position spatiale et la déviation en énergie au sein des faisceaux en collision, ce qui peut être réalisé en termes d’optique des faisceaux en introduisant une fonction de dispersion non nulle avec des signes opposés pour les deux faisceaux au point d’interaction. Depuis la première proposition en 2016, la mise en œuvre de la monochromatisation au FCC-ee a été continuellement améliorée, en commençant par des études paramétriques préliminaires. Dans cette thèse, une étude détaillée de la conception optique de la région d’interaction a été menée pour ce mode de collision nouvellement proposé, explorant différentes configurations potentielles et leur mise en œuvre dans le réseau global du FCC-ee, ainsi que des simulations de la dynamique des faisceaux et des évaluations de performance, incluant l’impact du « beamstrahlung »
The FCC-ee offers the potential to measure the electron Yukawa coupling via direct s-channel Higgs production at a centre-of-mass (CM) energy of about 125 GeV. This measurement is significantly facilitated if the CM energy spread of electron-positron collisions can be reduced to a level comparable to the Standard Model Higgs boson's natural width of 4.1 MeV without substantial loss in luminosity. Achieving this reduction in collision-energy spread is possible through the “monochromatization” concept. The basic idea consists of creating opposite correlations between spatial position and energy deviation within the colliding beams, which can be accomplished in beam-optics terms by introducing a nonzero dispersion function with opposite signs for the two beams at the interaction point. Since the first proposal in 2016, the monochromatization implementation at the FCC-ee has been continuously improved, starting from preliminary parametric studies. In this thesis, a detailed study of the interaction region optics design has been conducted for this newly proposed collision mode, exploring different potential configurations and their implementation in the FCC-ee global lattice, along with beam dynamics simulations and performance evaluations including the “beamstrahlung” impact
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Book chapters on the topic "Monochromatization"

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"monochromatization, n." In Oxford English Dictionary. 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/6335813211.

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Conference papers on the topic "Monochromatization"

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Zeni, Gabriele, Fabio Frassetto, Antonio Vanzo, Stefano Bonora, and Luca Poletto. "Bendable grating for monochromatization in the extreme-ultraviolet." In X-Ray Free-Electron Lasers: Advances in Source Development and Instrumentation VI, edited by Thomas Tschentscher, Luc Patthey, Marco Zangrando, and Kai Tiedtke. SPIE, 2023. http://dx.doi.org/10.1117/12.2665625.

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Alp, E. E., E. Witthoff, T. Mooney, H. Homma, and M. Kentjana. "Layered Optics for Nuclear Monochromatization of Synchrotron Radiation." In Physics of X-Ray Multilayer Structures. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/pxrayms.1992.mc12.

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The insertion device based third generation synchrotron radiation sources currently under construction in Europe, USA, and Japan brings new opportunities and challenges in the design and manufacturing of x-ray optics. These high brightness sources demand more stringent parameters on the quality of multilayered optics in terms of size, uniformity, and surface and interface roughness.
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Ibraimov, Nariman S. "Filtration and monochromatization of synchrotron radiation based on capillary optics." In Optical Science, Engineering and Instrumentation '97, edited by Richard B. Hoover and F. P. Doty. SPIE, 1997. http://dx.doi.org/10.1117/12.277679.

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Hort, O., L. Jurkovičová, J. Vábek, M. Albrecht, M. Staněk, O. Finke, L. Ben Ltaief, et al. "Advances in HHG for User Operations: Novel Techniques for Monochromatization." In Compact EUV & X-ray Light Sources. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/euvxray.2024.eth3a.2.

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In this work, we introduce two novel techniques for generating (quasi)monochromatic XUV radiation. One utilizes Bessel-Gauss beams and modulated gas media, while the other achieves continuous VUV tuning, enhancing versatility and efficiency for user applications.
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Adischev, Y. N., K. V. Afanasiev, A. V. Vukolov, and Alexander P. Potylitsyn. "Monochromatization of high-current nanosecond pulse source of x-ray bremsstrahlung." In SPIE Proceedings, edited by Sultan B. Dabagov. SPIE, 2007. http://dx.doi.org/10.1117/12.741842.

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van der Meer, R., B. Krishnan, I. V. Kozhevnikov, M. J. De Boer, B. Vratzov, H. M. J. Bastiaens, J. Huskens, et al. "Improved resolution for soft-x-ray monochromatization using lamellar multilayer gratings." In SPIE Optical Engineering + Applications, edited by Christian Morawe, Ali M. Khounsary, and Shunji Goto. SPIE, 2011. http://dx.doi.org/10.1117/12.892687.

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Wagner, Volker, and Pavel Mikula. "Use of focusing by bent perfect Si crystals for short-wavelength neutron monochromatization." In San Diego '92, edited by Charles F. Majkrzak and James L. Wood. SPIE, 1992. http://dx.doi.org/10.1117/12.130653.

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Schaefers, F., M. Grioni, J. Wood, H. Van Brug, E. J. Puik, M. Dapor, and F. Marchetti. "Application Of W/Si Multilayers For Monochromatization Of Soft X-Ray Synchrotron Radiation." In 32nd Annual Technical Symposium, edited by Charles F. Majkrzak. SPIE, 1989. http://dx.doi.org/10.1117/12.948760.

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Schaefers, F., M. Grioni, J. Wood, H. van Brug, E. J. Puik., M. Dapor, and F. Marchetti. "Application Of W/Si Multilayers For Monochromatization Of Soft X-Ray Synchrotron Radiation." In 32nd Annual Technical Symposium, edited by Finn E. Christensen. SPIE, 1988. http://dx.doi.org/10.1117/12.948766.

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Marshall, Gerald F. "Monochromatization By Multilayered Optics On A Cylindrical Reflector And On An Ellipsoidal Focusing Ring." In 30th Annual Technical Symposium, edited by D. Keith Bowen and Larry V. Knight. SPIE, 1986. http://dx.doi.org/10.1117/12.936621.

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Reports on the topic "Monochromatization"

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Seryi, A. Monochromatization Option for NLC Collisions(LCC-0134). Office of Scientific and Technical Information (OSTI), March 2004. http://dx.doi.org/10.2172/826823.

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