Because the motion of charge carriers in nanowires and quantum dots is restricted within nanoscale in two and three dimensions, respectively, both nanowires and quantum dots exhibit many excellent ...
The analytical structure of the double differential cross section of contact inelastic scattering of an X-ray photon by a free atom is established by the methods of the theory of irreducible tensor operators beyond impulse approximation. For the example of an Ne atom in the energy region of the ionization threshold of the 1 s shell, the existence of a fine structure of the cross section caused by transitions of electrons of the atomic core to excited states of the discrete spectrum is predicted ...
#1A N Hopersky(SFedU: Southern Federal University)H-Index: 7
#2A. M. Nadolinsky(SFedU: Southern Federal University)H-Index: 6
The influence of many-body and relativistic effects on the absolute values and shape of the double differential cross section for the resonant scattering of a linearly polarized X-ray photon by a free xenon atom near the K-shell ionization threshold has been theoretically analyzed. The evolution of the spatially extended structure of the scattering cross section to the K α, β structure of the X-ray spectrum of the xenon atom emission has been demonstrated. The calculations have been performed in...
The influence of many-body and relativistic effects on the absolute values and shape of the double differential cross section for the resonant scattering of a linearly polarized X-ray photon by a free xenon atom near the K -shell ionization threshold has been theoretically analyzed. The evolution of the spatially extended structure of the scattering cross section to the K α , β structure of the X-ray spectrum of the xenon atom emission has been demonstrated. The calculations have been performed ...
#1P.P. Kane(IITs: Indian Institutes of Technology)H-Index: 4
Abstract Recent progress in the following topics will be outlined. Needs and opportunities for further work will also be indicated. The topics are as follows. Compton scattering by inner shell (K and L) electrons; non-resonant Raman and Compton scattering and spin-dependent Compton scattering; atomic single-differential scattering cross-sections and incoherent scattering function (ISF) approximation; resonant Raman–Compton scattering and resonant inelastic X-ray scattering (RIXS) with possible c...
A review of results of the new method for measuring the Compton scattering on bound electrons in germanium, introduced by the presented authors, is given. It is based on the application of two detectors that operate in the coincidence mode. One detector is used as the scatterer and the other as the detector of scattered radiation. Two conditions, simultaneity of pulses from the two detectors and constant energy sum, result in very clean spectra in broad energy regions. Normalization of the Compt...
Abstract Double-differential Compton cross sections at two incident photon energies of 68.9 and 70.8 keV (mercury Kα X-rays) at the scattering angle of about 172° were measured in germanium using the coincidence technique with a detector as the scatterer. The cross sections were determined by normalization of the Compton spectra to the peaks due to the escape of characteristic Kα and Kβ X-rays from the target detector. This new approach of determination of absolute-scale Compton cross sections c...
A Monte-Carlo simulation of energy spectra of Compton double scattered X-rays has been made as functions of the incident energy of elliptically polarized X-rays and the atomic number of samples having different shapes and volumes. This simulation is based on the previous one made by one of the authors (N.S.), in which completely circularly polarized γ-rays were only assumed, and is improved to meet the multiple scattering correction on experimental Compton profiles measured with linearly or elli...
Abstract The differential cross section d 2 σ/ d E d Ω was measured at an incident photon energy of 105.3 keV in germanium on absolute scale. The measurements were made using two high purity Ge detectors that operated in a coincidence mode. One detector served as the target and detector of ejected electrons, and another as the detector of Compton-scattered photons. It was found that fast (multiple) cascades have little influence on the data of the 105.3 keV crossover transition. An improved dete...
Abstract A method of measuring the component of the detector response function due to the escape of secondary photons and electrons from the detector active volume has been investigated. It is based on the use of two detectors that operate in coincidence. The requirement of simultaneity of recorded events in the detectors and the condition of constant energy sum eliminate almost entirely all other components of the detector response function. Results of a measurement of the escape of photons fro...
