Electron Photon Interaction in Dense Media

Author: Helmut Wiedemann
Publisher: Springer Science & Business Media
ISBN: 940100367X
Format: PDF, ePub
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A comprehensive survey of recent theoretical and experimental progress in the area of electron-photon interaction and dense media. A state-of-the-art discussion of radiation production, with descriptions of new ideas and technologies that enhance the production of X-rays in the form of channelling, transition and parametric X-ray production. Progress in electron beam physics to produce sub-picosecond electron bunches from low-energy linear accelerators make it possible to produce coherent, high brightness, submillimeter radiation and sub-picosecond X-ray pulses. Micro-undulators in the form of bent crystalline structures hold great promise as future X-ray sources.

Advanced Radiation Sources and Applications

Author: Helmut Wiedemann
Publisher: Springer Science & Business Media
ISBN: 1402034504
Format: PDF, Mobi
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A NATO Advanced Research Workshop on ”Advanced Radiation Sources and Applications” was held from August 29 to September 2, 2004. Hosted by the Yerevan Physics Institute, Yerevan, Armenia, 30 invited researchers from former Soviet Union and NATO countries gathered at Nor-Hamberd, Yerevan, on the slopes of Mount Aragats to discuss recent theoretical as well as expe- mental developments on means of producing photons from mostly low energy electrons. Thismeetingbecamepossiblethroughthegenerousfundingprovidedbythe NATO Science Committee and the programme director Dr. Fausto Pedrazzini in the NATO Scienti?c and Environmental Affairs Division. The workshop - rectors were Robert Avakian, Yerevan Physics Institute, Armenia and Helmut Wiedemann, Stanford (USA). Robert Avakian provided staff, logistics and - frastructure from the Yerevan Physics institute to assure a smooth execution of the workshop. Special thanks goes to Mrs. Ivetta Keropyan for admin- trative and logistics support to foreign visitors. The workshop was held at the institute’s resort in Nor-Hamberd on the slopes of Mount Aragats not far from the Yerevan cosmic ray station. The isolation and peaceful setting of the resort provided the background for a fruitful week of presentations and discussions. Following our invitations, 38 researchers in this ?eld came to the workshop from Armenia, Belarus, Romania, Russia, Ukraine, Denmark, France, G- many and the USA. Commuting from Yerevan local scientists joined the daily presentations. Over a ?ve day period 40 presentations were given.

Confined Electrons and Photons

Author: Elias Burstein
Publisher: Springer Science & Business Media
ISBN: 1461519632
Format: PDF, Mobi
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The optical properties of semiconductors have played an important role since the identification of semiconductors as "small" bandgap materials in the thinies, due both to their fundamental interest as a class of solids baving specific optical propenies and to their many important applications. On the former aspect we can cite the fundamental edge absorption and its assignment to direct or indirect transitions, many-body effects as revealed by exciton formation and photoconductivity. On the latter aspect, large-scale applications sucb as LEDs and lasers, photovoltaic converters, photodetectors, electro-optics and non-linear optic devices, come to mind. The eighties saw a revitalization of the whole field due to the advent of heterostructures of lower-dimensionality, mainly two-dimensional quantum wells, which through their enhanced photon-matter interaction yielded new devices with unsurpassed performance. Although many of the basic phenomena were evidenced through the seventies, it was this impact on applications which in turn led to such a massive investment in fabrication tools, thanks to which many new structures and materials were studied, yielding funher advances in fundamental physics.

The Future of Dynamic Structural Science

Author: Judith A K Howard
Publisher: Springer
ISBN: 9401785503
Format: PDF, Docs
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This work focuses on complementary crystallographic and spectroscopic areas of dynamic structural science, from papers presented at the 46th NATO sponsored course in Erice, Sicily 2013. These papers cover a range of material from background concepts to more advanced material and represent a fully inter-disciplinary collection of the latest ideas and results within the field. They will appeal to practising or novice crystallographers, both chemical and biological, who wish to learn more about modern spectroscopic methods and convergent advances and hence vice versa for experimental and computational spectroscopists. The chapters refer to the latest techniques, software and results and each chapter is fully referenced. The volume provides an excellent starting point for new comers in the emerging, multi-disciplinary area of time resolved science.

Mesoscopic Electron Transport

Author: Lydia L. Sohn
Publisher: Springer Science & Business Media
ISBN: 9401588392
Format: PDF, Docs
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Ongoing developments in nanofabrication technology and the availability of novel materials have led to the emergence and evolution of new topics for mesoscopic research, including scanning-tunnelling microscopic studies of few-atom metallic clusters, discrete energy level spectroscopy, the prediction of Kondo-type physics in the transport properties of quantum dots, time dependent effects, and the properties of interacting systems, e.g. of Luttinger liquids. The overall understanding of each of these areas is still incomplete; nevertheless, with the foundations laid by studies in the more traditional systems there is no doubt that these new areas will advance mesoscopic electron transport to a new phenomenological level, both experimentally and theoretically. Mesoscopic Electron Transport highlights selected areas in the field, provides a comprehensive review of such systems, and also serves as an introduction to the new and developing areas of mesoscopic electron transport.