Дисертації з теми "Hard Electron Energy Spectra"
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Walsh, Caroline Annabelle. "Modelling and interpretation of electron energy-loss spectra from interfaces." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316804.
Повний текст джерелаMuto, Shunsuke, and Yusuke Sasano. "Energy-drift correction of electron energy-loss spectra from prolonged data accumulation of low SNR signals." Oxford University Press, 2008. http://hdl.handle.net/2237/20779.
Повний текст джерелаBrohan, Philip. "Ab-initio studies of two-level states in glasses and electron energy-loss spectra." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319463.
Повний текст джерела吳子傑 and Tsz-kit Victor Ng. "Inversion of low energy electron diffraction IV spectra of reconstructed structure of SiC (0001)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31225007.
Повний текст джерелаNg, Tsz-kit Victor. "Inversion of low energy electron diffraction IV spectra of reconstructed structure of SiC (0001)." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23234283.
Повний текст джерелаMuto, S., K. Tatsumi, K. Ikeda, and S. Orimo. "Dehydriding process of alpha-AlH3 observed by transmission electron microscopy and electron energy-loss spectroscopy." American Institite of Physics, 2009. http://hdl.handle.net/2237/12636.
Повний текст джерелаJung, Younjoon 1971. "Dynamics and spectra in condensed phases : single molecule spectroscopy, electron transfer, and excitation energy transfer." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8055.
Повний текст джерелаVita.
Includes bibliographical references.
In this thesis, several problems regarding dynamics and spectra in condensed phases are theoretically analyzed via analytical models. The thesis consists of four main topics. First, a theoretical description of single molecule spectroscopy is presented in order to study time-dependent fluctuations of single molecule spectra in a dynamic environment. In particular, the photon counting statistics is investigated for a single molecule undergoing a generic type of spectral diffusion process. An exact analytical solution is found for this case, and various physical limits are analyzed. Second, motivated by recent experimental observations of anomalous spectral fluctuations in quantum dot systems, both the lineshape phenomenon and the photon counting statistics are explored when spectral fluctuations are characterized by power-law statistics, for which there is no finite timescale. Unique features of the power-law statistics are demonstrated in spectral properties of those systems. Third, a spectral analysis method is developed for the non-adiabatic electron transfer reactions, which allows a unified treatment of diverse kinetic regimes in the electron transfer process. The method is applied to electron transfer reactions in mixed-valence systems in order to explore the possibility of electronic coherence. Finally, effects of the nonequilibrium bath relaxation on the excitation energy transfer process are investigated by generalizing the Forster-Dexter theory of excitation energy transfer to the case of the nonstationary bath relaxation.
by YounJoon Jung.
Ph.D.
Orimo, Shin-ichi, Kazutaka Ikeda, Shunsuke Muto, and Kazuyoshi Tatsumi. "Chemical Bonding of AlH3 Hydride by Al-L2,3 Electron Energy-Loss Spectra and First-Principles Calculations." MDPI, 2012. http://hdl.handle.net/2237/20829.
Повний текст джерелаBurinprakhon, Thanusit. "Deposition and characterisation of multilayer hard coatings : Ti/TiN#delta#/TiCâ†xNâ†y/(TiC) a-C:H/(Ti) a-C:H." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366464.
Повний текст джерелаBryant, Paul M. "Investigations of electropositive and electronegative RF discharges." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365857.
Повний текст джерелаDonovan, Keith Thomas. "Hadronic fragmentation studies in ep scattering at HERA." Thesis, Queen Mary, University of London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312965.
Повний текст джерелаDevitt, Andrew Maurice. "Time and angle resolved phonon absorption in the fractional quantum hall regime." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342525.
Повний текст джерелаOLIVEIRA, ICIMONE B. de. "Desenvolvimento do cristal semicondutor de brometo de tálio para aplicações como detector de radiação e fotodetector." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11385.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
FAPESP:01/09049-5
Hawcroft, Deborah. "A search for superdeformed and hyperdeformed states in '2'2'2Th and '2'3'2U." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367227.
Повний текст джерелаMAEDA, NANCY T. "Avaliação da neoformação óssea em tíbia de coelhos utilizando cúpula de hidroxiapatita associada a diferentes biomateriais." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10542.
Повний текст джерелаMade available in DSpace on 2014-10-09T14:07:15Z (GMT). No. of bitstreams: 0
Dissertação (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
SOUZA, LETICIA L. de. "Oxidação direta do etileno glicol sobre catalisadores eletroquímicos binários à base de Pt, Pd, e Sn suportados em carbono para aplicação em células alcalinas." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26934.
Повний текст джерелаMade available in DSpace on 2016-12-21T17:42:04Z (GMT). No. of bitstreams: 0
Os catalisadores eletroquímicos binários de PtSn/C, PdSn/C e PtPd/C foram sintetizados em diferentes proporções pelo método da redução via borohidreto, posteriormente estes foram caracterizados por microscopia eletrônica de transmissão, difração de raios X, espectroscopia no infravermelho por transformada de Fourier (PtSn/C e PdSn/C) e energia dispersiva de raios X. As atividades eletroquímicas dos diferentes materiais preparados foram avaliadas por intermédio de voltametria cíclica, cronoamperometria e curvas de polarização em célula a combustível alimentada diretamente por etileno glicol em eletrólito alcalino. As curvas de densidade de potência indicaram que os catalisadores eletroquímicos contendo Sn e Pd são mais ativos para a reação de oxidação do etileno glicol, especialmente a composição 70%:30% - relação molar entre os metais suportados em carbono - dos catalisadores PtSn/C, PdSn/C e PtPd/C todos superando as medidas de potência do Pt/C. Este resultado indica que a adição de Sn e Pd favorece a oxidação do etileno glicol em meio alcalino. O melhor desempenho observado para os catalisadores eletroquímicos PtSn/C, PdSn/C e PtPd/C (70%:30%) poderia estar associado à sua maior seletividade quanto a formação de oxalato, ou seja , a formação deste produto resulta em um maior número de elétrons, por consequência em maiores valores de corrente.
Tese (Doutorado em Tecnologia Nuclear)
IPEN/T
Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
Mandray, Ariane. "Etude magnéto-optique de centres D- confinés dans des multi-puits quantiques GaAs/AlGaAs." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10075.
Повний текст джерелаResmi, L. "Multiband Modelling and Radio Observations of Gamma Ray Burst Afterglows." Thesis, 2006. https://etd.iisc.ac.in/handle/2005/4997.
Повний текст джерелаZharkova, Valentina V., and Mykola Gordovskyy. "The Effects of Return Current on Hard X-Ray Photon and Electron Spectra in Solar Flares." 2009. http://hdl.handle.net/10454/2657.
Повний текст джерелаThe effect of a self-induced electric field is investigated analytically and numerically on differential and mean electron spectra produced by beam electrons during their precipitation into a flaring atmosphere as well as on the emitted hard X-ray (HXR) photon spectra. The induced electric field is found to be a constant in upper atmospheric layers and to fall sharply in the deeper atmosphere from some "turning point" occurring either in the corona (for intense and softer beams) or in the chromosphere (for weaker and harder beams). The stronger and softer the beam, the higher the electric field before the turning point and the steeper its decrease after it. Analytical solutions are presented for the electric fields, which are constant or decreasing with depth, and the characteristic "electric" stopping depths are compared with the "collisional" ones. A constant electric field is found to decelerate precipitating electrons and to significantly reduce their number in the upper atmospheric depth, resulting in their differential spectra flattening at lower energies (<100 keV). While a decreasing electric field slows down the electron deceleration, allowing them to precipitate into deeper atmospheric layers than for a constant electric field, the joint effect of electric and collisional energy losses increases the energy losses by lower energy electrons compared to pure collisions and results in maxima at energies of 40-80 keV in the differential electron spectra. This, in turn, leads to the maxima in the mean source electron spectra and to the "double power law" HXR photon spectra (with flattening at lower energies) similar to those reported from the RHESSI observations. The more intense and soft the beams are, the stronger is the lower energy flattening and the higher is the "break" energy where the flattening occurs.
Wang, Chi-Suan, and 王祈順. "STUDIES ON QUANTUM CONFINEMENT AND ENERGY SPECTRA OF AN ELECTRON IN A HETEROSTRUCTURE SEMICONDUCTOR QUANTUM DEVICES." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/34208620020180656512.
Повний текст джерела國立交通大學
電子研究所
82
The energy spectra of a symmetric quantum well and single barrier within an in-plane magnetic field are exactly derived and the numerical results are calculated by iteration. A critical dis- tance between the edge of electron spiral radius and the barrier boundary is introduced to describe the relation of well or width and the critical magnetic field beyond which the Landau levels will dominate. We can predict by a simple equation when bulk Landau levels will dominate in the middle of the well or barrier region. The energy spectra of an electron in an asym- metric quantum well and an asymmetric quantum double barrier within in-plane magnetic field and electric field perpendicular to the barrier interfaces are exactly derived and the numerical results are calculated by iteration. The ground and excited are calculated for various asymmetric potential barriers, well widths, barrier widths and electric fields. Major different cha- racteristics of energy spectra between wide and narrow wells are discussed. The behaviors of bulk Landau level in well region of a larger well and the elevation of the ground state in a smaller well width are explained. It is found that the density distribu- tion of electrons in a large well region is strongly affected by the asymmetric potential configuration and electric field in the growth direction. The characteristics of the energy spectrum are discussed by the superposition of well-and barrier- potential sub- systems. Major different characteristics of energy spectra with variation of wire radius and potential configuration are The behaviors of bulk Landau levels under large perpendicular netic field are explained. The characteristics of crossing points within neighboring modes is explained by the combined effect of well-and barrier-subsystems.
Suendorf, Martin. "Investigation of the growth process of thin iron oxide films: Analysis of X-ray Photoemission Spectra by Charge Transfer Multiplet calculations." Doctoral thesis, 2012. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2012121910580.
Повний текст джерела