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Tuesday, July 28, 2020 | History

2 edition of Relativistic effects in electron scattering and photoionization of atoms and ions. found in the catalog.

Relativistic effects in electron scattering and photoionization of atoms and ions.

Norman Stanley Scott

Relativistic effects in electron scattering and photoionization of atoms and ions.

by Norman Stanley Scott

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Published .
Written in English


Edition Notes

Thesis (Ph.D.)--The Queen"s University of Belfast, 1980.

The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL19319762M

  In the last few years, the R atip package has been found useful for studying the properties of atoms and (highly charged) ions within rather arbitrary configurations. Here, the latest extensions to this code are reviewed which help calculate several Auger and photoionization parameters, including cross sections, angular coefficients as well as .   The double K-photoionization of heavy atoms is a rare process which produces a “hollow atom”. We have recently conducted a comprehensive study of the energy-dependence of double K-photoionization in Ag (Z = 47) aimed at elucidating the processes contributing. These measurements have served to isolate the effects of the dynamic electron–electron scattering .

This volume contains the invited papers and selected contributed papers presented at the International Symposium on 'Electron-Molecule Scattering and Photoionization' held at SERC's Daresbury Laboratory, Cheshire, England from 18th to 19th July, This Symposium was a Satellite Meeting to the. Density Effect Correction to L0, event, and by analyzing this and electron scattering data he was able to first calculate that the nucleus of Al atoms must have a mass of about 22 and platinum would have a mass of !4 J. J. Thomson, director of .

The R-matrix method is employed for (A) partial and total photoionization and photorecombination cross sections of (e + ion) bound levels, and (B) DR and (e + ion) scattering cross sections. Relativistic effects and fine structure are considered in . effect data) and, assuming them angle-independent, add them to FF or MFF approximation predictions. For neutral atoms the anomalous scattering factors have been calculated over a wide range of photon energy for most elements, as in the work by Cromer and Liberman [l] and Henke et al. [4]. But for ions systematic studies are not yet available.


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Relativistic effects in electron scattering and photoionization of atoms and ions by Norman Stanley Scott Download PDF EPUB FB2

Available from UMI in association with The British Library. Requires signed TDF. Abstract Not : Norman Stanley Scott. This volume contains the invited papers and selected contributed papers presented at the International Symposium on 'Electron-Molecule Scattering and Photoionization' held at SERC's Daresbury Laboratory, Cheshire, England from 18th to 19th July, Part of the Physics of Atoms and Molecules book series (PAMO) Abstract In order to set the subject of electron capture at very high energies in historical perspective we shall first consider scattering at high non-relativistic : Benno Moiseiwitsch.

The theory is then extended to treat electron scattering by heavy atoms and ions where relativistic effects are important. Electron scattering by atoms and ions at intermediate and high energies. Measurements of the asymmetry in the scattering of unpolarised electrons from optically pumped spin-polarised sodium atoms have been carried out at incident electron.

scattering by target atoms or ions. Accurate theoretical description of the relativistic electron-atom collisions effects arising in the relativistic Mott scattering of twisted.

This book brings together a comprehensive theoretical and experimental survey of the current understanding of the basic physical processes involved in atomic processes.

Contents: Recent Many-Body Perturbation Calculations of Photoionization Cross Sections (H P Kelly) Relativistic Many-Body Theory Applied to Highly-Charged Ions (W R Johnson). The relativistic effects that limit cyclotrons set in at much lower energies for electrons, and a different configuration, the microtron, is more the simplest microtron, electron orbits are a series of circles tangent at the position of the accelerating radio-frequency cavity.

The periods of revolution on each of these circles differ by an integral number of periods of the. The effect of many-electron correlations on anomalous scattering factors in Rayleigh scattering is studied, in the case of the Ar atom, using dispersion relations and the relativistic random-phase approximation (RRPA).

The correlation effect changes the Ar 3s-subshell photoionization cross sections significantly compared with the corresponding independent-particle. Marvin H. Mittleman's 91 research works with 1, citations and reads, including: Threshold and Coulomb effects in multiphoton ionization.

Relativistic and channel coupling effects in photoionization and unified electronic recombination of Fe XVII are demonstrated with an extensive level close-coupling calculation using the Breit-Pauli R-matrix method. A multiconfiguration eigenfunction expansion up to the n=3 levels of the core ion Fe XVIII is employed with five spectroscopic configurations.

Electron scattering occurs when electrons are deviated from their original is due to the electrostatic forces within matter interaction or, if an external magnetic field is present, the electron may be deflected by the Lorentz force.

[citation needed] This scattering typically happens with solids such as metals, semiconductors and insulators; and is a limiting factor in.

Future challenges and directions, in reliable electron-atom scattering calculations as well as in high precision double-photoionization cross section calculations, have been discussed and suggested. Keywords Scattering, electrons and photons, atoms and ions PACS Nos.: 32 80 Fb.

Dp PLAN OF THE ARTICLE 1. About this book. Introduction. The NATO Advanced Study Institute (ASI) on "Relativistic Effects in Atoms, Molecules and Solids" cosponsored by Simon Fraser University (SFU) and Natural Sciences and Engineering Research Council of Canada (NSERC) was held at the University of British Columbia (UBC), Van­ couver, Canada from August 10th until August 21st, The influence of intratarget relativistic effects on electron spin polarization is studied for low-energy electron scattering from Ca, Sr, Ba, and Yb atoms, for which a.

Recent relativistic calculations on low energy elastic scattering of electrons from atoms are reviewed. Two aspects are emphasized: mathematical transformations and numerical methods used in the solution of the Dirac equation and the summation of the partial wave series ; and the results of relativistic calculations, in particular the behaviour of the cross sections and spin.

Recent experimental results related to shape resonances.- Threshold measurements of electron and photon collisions with atoms and small molecules.- Electron scattering in molecular oxygen: a high resolution study using a synchrotron radiation photoionization source.- Negative ion resonance electron scattering from oriented, physisorbed O   Relativistic and resonant effects.

In order to interpret the observed CSDs and to elucidate the origin of the peak structure, we performed ab. The R-matrix method is employed for (A) partial and total photoionization and photorecombination cross sections of (e+ion) bound levels, and (B) DR and (e+ion) scattering cross sections.

Relativistic effects and fine structure are considered in. Topics: 09H - Computer software, programming, 20D - Atomic physics, molecular physics, Relativistic effects in electron scattering ond photoionization of atoms and ions [ Electron collision studies].

Ionization of Atoms and Ions by Electron Impact. R. H. G. Reid. Pages Multicolor Photoionization of Atoms with an IR Laser and Its Higher UV Harmonics. Valérie Véniard, Richard Taïeb, Alfred Maquet Chiral Effects in Electron Scattering by Molecules. D. G. Thompson, K. Blum. Pages Back Matter.Relativistic Quantum Theory of Atoms and Molecules is a book that should be on the desk of every atomic-physics student and research scientist.

Written by a master of the field, it contains a wealth of information about relativistic atomic and molecular structures.

The progress on relativistic structure of many-electron atoms detailed in the book brings to mind a comment .Atoms, an international, peer-reviewed Open Access journal. Atoms (ISSN ; CODEN: ATOMC5) is an international, peer-reviewed and cross-disciplinary scholarly journal of scientific studies related to all aspects of the atom published quarterly online by MDPI.

Open Access —free for readers, with article processing charges (APC) paid by authors or their institutions.