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Author: Publisher: ISBN: Category : Languages : en Pages : 34
Book Description
Inelastic x-ray scattering and elastic x-ray scattering are fundamentally related processes. When the x-ray photon energy is near the ionization threshold for an inner shell, the inelastic channel is dominated by resonant x-ray Raman scattering. Studies of this emission not only illuminate the resonant scattering process in general, they also point to new opportunities for spectral studies of electronic structure using x-rays. Atoms in the form of a free gas provide an ideal target for testing the current theoretical understanding of resonant x-ray Raman scattering. In addition, x-ray scattering from molecular gases demonstrates the effect of bonding symmetry on the polarization and angular distribution of the scattered x-rays. Comparisons of experimental data with theory demonstrate both the successes and limitations of simple, single-electron interpretations of the scattering process.
Author: Publisher: ISBN: Category : Languages : en Pages : 34
Book Description
Inelastic x-ray scattering and elastic x-ray scattering are fundamentally related processes. When the x-ray photon energy is near the ionization threshold for an inner shell, the inelastic channel is dominated by resonant x-ray Raman scattering. Studies of this emission not only illuminate the resonant scattering process in general, they also point to new opportunities for spectral studies of electronic structure using x-rays. Atoms in the form of a free gas provide an ideal target for testing the current theoretical understanding of resonant x-ray Raman scattering. In addition, x-ray scattering from molecular gases demonstrates the effect of bonding symmetry on the polarization and angular distribution of the scattered x-rays. Comparisons of experimental data with theory demonstrate both the successes and limitations of simple, single-electron interpretations of the scattering process.
Author: David L Ederer Publisher: World Scientific ISBN: 9814547255 Category : Languages : en Pages : 248
Book Description
The Raman Emission by X-rays (REX-I) Workshop focused on Raman Scattering of x-rays mostly from Synchrotron Radiation Sources. The advent of new high brightness sources of x-ray radiation has given new impetus to this tantalizing technique that has offered ways of obtaining new insights into the atomic and electronic structure of solids and gases, but which has been limited by weak sources of excitation. In the last five years, Raman scattering by x-rays has been observed an ubiquitous phenomena. It has been applied to yield new information about the band structure of solids and about the electronic structure of atoms. It was the object of this workshop to identify and define key issues in this rapidly developing subfield of x-ray physics by gathering together a group of theorists and experimentalists, and by providing overlap between atomic and condensed matter physics. The workshop aimed to achieve this end by providing an environment to discuss the latest developments and to initiate cross fertilization in the difference areas.
Author: Publisher: ISBN: Category : Languages : en Pages : 172
Book Description
X-ray resonant Raman scattering presents great promise as a high-resolution spectroscopic probe of the electronic structure of matter. Unlike other methods, the technique avoids the loss of energy resolution resulting from the lifetime broadening of short-lived core-excited states. In addition, measurements of polarization and angular anisotropies yield information on the symmetries of electronic states of atoms and molecules. We studied the L3 edge of xenon, where the lifetime broadening is a major feature of the spectra recorded previously. X-ray fluorescence spectra were taken of both the L[alpha]{sub l,2} and L[beta]{sub 2,15} peaks over a range of energies from 10 eV below the edge to 40 eV above. These spectra show the evolution of resonant Raman scattering into characteristic fluorescence as the photon energy is scanned across the edge, and confirm several features of these spectra such as asymmetries in resonant peak shapes due to the onset of the ionization continuum. These results constitute the most comprehensive study of X-ray resonant Raman scattering to date, and were submitted for publication. Studies of other cases are under way, and new instruments that would match the unique characteristics of the APS - and thus render a new range of experiments possible - are under consideration.
Author: Sune Svanberg Publisher: Springer Science & Business Media ISBN: 3642973981 Category : Science Languages : en Pages : 418
Book Description
A wide-ranging review of modern techniques in atomic and molecular spectroscopy. A brief description of atomic and molecular structure is followed by the relevant energy structure expressions. A discussion of radiative properties and the origin of spectra leads into coverage of X-ray and photoelectron spectroscopy, optical spectroscopy, and radiofrequency and microwave techniques. The treatment of laser spectroscopy investigates various tunable sources and a wide range of techniques characterized by high sensitivity and high resolution. Throughout this book, the relation between fundamental and applied aspects is shown, in particular by descriptions of applications to chemical analysis, photochemistry, surface characterisation, environmental and medical diagnostics, remote sensing and astrophysics.
Author: Sow-Hsin Chen Publisher: Academic Press ISBN: 1483217450 Category : Science Languages : en Pages : 425
Book Description
Spectroscopy in Biology and Chemistry discusses the use of thermal neutron diffraction and inelastic scattering, and the related techniques of x-ray diffraction, Raman and Rayleigh scattering, in investigating biological macromolecules and chemical systems. The book describes neutron, x-ray and laser spectroscopy; quasielastic scattering in neutron and laser spectroscopy; and interatomic forces, molecular structure and molecular vibrations. The text also discusses the x-ray crystallography of biological molecules; neutron diffraction studies of hydrogen bonding in organic and biochemical systems; and comparative x-ray and neutron diffraction from nerve myelin membranes. Neutron spectroscopy of chain polymers; chemical and biological applications of neutron inelastic scattering; and neutron scattering and optical studies of molecular vibrations are also considered. The book further tackles small angle neutron scattering from polymers; the use of tunable laser resonance Raman spectroscopy in biology; and the use photon correlation spectroscopy in biology. Students and faculty members in physics, chemistry, and biology, and research workers in related fields will find the text invaluable.
Author: Gordon W. F. Drake Publisher: Springer Nature ISBN: 3030738930 Category : Science Languages : en Pages : 1436
Book Description
Comprises a comprehensive reference source that unifies the entire fields of atomic molecular and optical (AMO) physics, assembling the principal ideas, techniques and results of the field. 92 chapters written by about 120 authors present the principal ideas, techniques and results of the field, together with a guide to the primary research literature (carefully edited to ensure a uniform coverage and style, with extensive cross-references). Along with a summary of key ideas, techniques, and results, many chapters offer diagrams of apparatus, graphs, and tables of data. From atomic spectroscopy to applications in comets, one finds contributions from over 100 authors, all leaders in their respective disciplines. Substantially updated and expanded since the original 1996 edition, it now contains several entirely new chapters covering current areas of great research interest that barely existed in 1996, such as Bose-Einstein condensation, quantum information, and cosmological variations of the fundamental constants. A fully-searchable CD- ROM version of the contents accompanies the handbook.
Author: G. Materlik Publisher: North Holland ISBN: Category : Medical Languages : en Pages : 698
Book Description
Hardbound. The collected articles in this book written by recognized experts in the field explore the theoretical and experimental insights and applications of the rapidly expanding science of x-ray resonant interactions. The variety of papers presented reflects the theoretical and experimental progress made possible with tunable, polarized and highly brilliant synchrotron radiation sources. In a rapidly changing field this book provides a single selected reference source on the present understanding of x-ray resonance scattering and its many applications. A detailed subject index provides easy access to the many topics covered by the authors who list over 1000 references.
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