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Author : Herschel Byron Snodgrass
Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.:/5 (21 download)
Download or read book Elastic Scattering of Low-energy Electrons by Nonspherical Atoms written by Herschel Byron Snodgrass and published by . This book was released on 1966 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)
Download or read book Elastic Scattering of Low-energy Electrons by Randomly Oriented and Aligned Molecules written by and published by . This book was released on 2000 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elastic scattering of low (10-50 eV) kinetic energy electrons from free diatomic molecules is studied using a single-center expansion of the full molecular potential. Dynamic exchange and polarization are included in a local form. The calculated elastic differential scattering cross-sections (DCS) for electron impact on CO and N2 are in good agreement with available experimental data. The importance of using the full molecular potential instead of a two-center potential approach is pointed out. These corrections are small for energies above 50 eV, but they become increasingly important at lower energies. When discussing the angular distributions of elastically-scattered electrons from oriented molecules (like surface adsorbates), we show that these corrections are particularly significant. The results have implications for other electron scattering problems such as those encountered in low-energy photoelectron diffraction from both core and valence levels.
Author : David William Walker
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (225 download)
Download or read book Elastic Scattering of Low Energy Electrons from Heavy Atoms written by David William Walker and published by . This book was released on 1970 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Paul McEachran
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (17 download)
Download or read book Elastic scattering of low energy electrons by hydrogen atoms written by Robert Paul McEachran and published by . This book was released on 1962 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Petr Carsky
Publisher : CRC Press
ISBN 13 : 1439839115
Total Pages : 311 pages
Book Rating : 4.4/5 (398 download)
Download or read book Low-Energy Electron Scattering from Molecules, Biomolecules and Surfaces written by Petr Carsky and published by CRC Press. This book was released on 2016-04-19 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the turn of the 21st century, the field of electron molecule collisions has undergone a renaissance. The importance of such collisions in applications from radiation chemistry to astrochemistry has flowered, and their role in industrial processes such as plasma technology and lighting are vital to the advancement of next generation devices. F
Author : Raymond Willis LaBahn
Publisher :
ISBN 13 :
Total Pages : 256 pages
Book Rating : 4.:/5 (227 download)
Download or read book The Elastic Scattering of Low Energy Electrons from Atomic Helium written by Raymond Willis LaBahn and published by . This book was released on 1965 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elastic electron scattering from atomic helium is examined within the framework of perturbed HartreeFock theory for the energy region from 0 to 50 eV. Interaction potentials are derived to describe the distortion induced into the target atom by the incident electron in the adiabatic approximation. Dynamical corrections to the adiabatic approximation are also examined and these incorporated into the formalism through a 'velocitydependent' potential. The s-, p-, and d-wave scattering phase shifts were computed by numerical iteration of the resulting equations. These phase shifts are then used to compute the elastic scattering cross sections and the results compared with other recent theoretical predictions and experimental data. (Author).
Author : LAWRENCE BAYLOR. ROBINSON
Publisher :
ISBN 13 :
Total Pages : 1 pages
Book Rating : 4.:/5 (227 download)
Download or read book The Elastic Scattering of Low Energy Electrons by the Slater Orbital Atom written by LAWRENCE BAYLOR. ROBINSON and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential between an electron and a static atom is fomulated on the basis of creening-constant-type wave functions, as are characteristic of the Slater orbital atom. Universal functions are constructed so as to characterize any atom with atomic number Z from 1 to 86. The low energy elastic scattering properties of atoms are investigated on the basis of such a potential, AND THE CROSS SECTIONS ARE CALCULATED FOR ALL OF THE ATOMS FROM Z = 1 to 86. The results are compared with those which the writer obtained with the Thomas-Fermi model of the atom. Results are given for the cross sections as a function of energy, in some specific cases. Qualitative agreement between theory and experiment results from such calculations. A polarization potential must be added to static atom potentials in order to obtain quantitative agreement between theory and experiment. (Author).
Author : Colm T. Whelan
Publisher : Springer Science & Business Media
ISBN 13 : 9780306487019
Total Pages : 362 pages
Book Rating : 4.4/5 (87 download)
Download or read book Electron Scattering written by Colm T. Whelan and published by Springer Science & Business Media. This book was released on 2005-01-10 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a unity to physics; it is a discipline which provides the most fundamental understanding of the dynamics of matter and energy. To understand anything about a physical system you have to interact with it and one of the best ways to learn something is to use electrons as probes. This book is the result of a meeting, which took place in Magdalene College Cambridge in December 2001. Atomic, nuclear, cluster, soHd state, chemical and even bio- physicists got together to consider scattering electrons to explore matter in all its forms. Theory and experiment were represented in about equal measure. It was meeting marked by the most lively of discussions and the free exchange of ideas. We all learnt a lot. The Editors are grateful to EPSRC through its Collaborative Computational Project program (CCP2), lOPP, the Division of Atomic, Molecular, Optical and Plasma Physics (DAMOPP) and the Atomic Molecular Interactions group (AMIG) of the Institute of Physics for financial support. The smooth running of the meeting was enormously facilitated by the efficiency and helpfulness of the staff of Magdalene College, for which we are extremely grateful. This meeting marked the end for one of us (CTW) of a ten-year period as a fellow of the College and he would like to take this opportunity to thank the fellows and staff for the privilege of working with them.
Author : Carl J. Lenander
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (227 download)
Download or read book Low-energy Electron Scattering from Atoms and Molecules: a Model written by Carl J. Lenander and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simple model is proposed for the calculation of free-electron wave functions for low-energy electrons incident upon neutral atoms. The region of interaction of the electron with the atom may be separated into three regions, according to the importance of potential: Coulomb plus exchange; Coulomb; and far-field induced polarization. The division of regions is based on mathematical and physical reasons for the characteristic behavior of wave functions in the scattering problem. Examples are given for the elastic scattering of electrons from nitrogen, oxygen and argon. The agreement with experiment and effective-range theory is good. The application of the method to prediction of low-energy electron scattering from homonuclear diatomic molecules is discussed. (Author).
Author : Isao Shimamura
Publisher : Springer Science & Business Media
ISBN 13 : 1461323576
Total Pages : 578 pages
Book Rating : 4.4/5 (613 download)
Download or read book Electron-Molecule Collisions written by Isao Shimamura and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scattering phenomena play an important role in modern physics. Many significant discoveries have been made through collision experiments. Amongst diverse kinds of collision systems, this book sheds light on the collision of an electron with a molecule. The electron-molecule collision provides a basic scattering problem. It is scattering by a nonspherical, multicentered composite particle with its centers having degrees of freedom of motion. The molecule can even disintegrate, Le., dissociate or ionize into fragments, some or all of which may also be molecules. Although it is a difficult problem, the recent theoretical, experimental, and computational progress has been so significant as to warrant publication of a book that specializes in this field. The progress owes partly to technical develop ments in measurements and computations. No less important has been the great and continuing stimulus from such fields of application as astrophysics, the physics of the earth's upper atmosphere, laser physics, radiation physics, the physics of gas discharges, magnetohydrodynamic power generation, and so on. This book aims at introducing the reader to the problem of electron molecule collisions, elucidating the physics behind the phenomena, and review ing, to some extent, up-to-date important results. This book should be appropri ate for graduate reading in physics and chemistry. We also believe that investi gators in atomic and molecular physics will benefit much from this book.
Author : P. G. Burke
Publisher : Springer Science & Business Media
ISBN 13 : 1461341124
Total Pages : 137 pages
Book Rating : 4.4/5 (613 download)
Download or read book Potential Scattering in Atomic Physics written by P. G. Burke and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph was written while the author was a visitor at the Center for Theoretical Studies at the University of Miami, Coral Gables, Florida. The author wishes to thank Professor Behram Kursunoglu for the warm hospitality extended to him at the Center and to acknowledge the many interesting and fruitful discussions which he had with other visitors and with members of staff at the Center. Philip G. Burke v Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Scattering by a Short-Range Potential. . . . . . . . . . . . . . . 5 3. Scattering by a Coulomb Potential. . . . . . . . . . . . . . . . . . 11 4. Scattering by a Spin-Orbit Potential . . . . . . . . . . . . . . " 17 5. Scattering by One-Electron Atoms. . . . . . . . . . . . . . . . . . 23 6. Low-Energy Effective-Range Theory. . . . . . . . . . . . . . . . 39 7. Bound States and Resonances. . . . . . . . . . . . . . . . . . . . . . 55 8. Variational Methods and Bound Principles. . . . . . . . . . 75 9. Integral Equation Methods and the Born Approximation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 10. Semiclassical and Eikonal Methods . . . . . . . . . . . . . . . . . 117 Appendix. The Coupling of Angular Momenta . . . . . . . . . . . 127 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 vii 1 Introduction In this monograph we study the scattering of a particle by a potential field with particular reference to elastic electron scat tering by a neutral atom or by an ion. This subject is clearly of interest in its own right as a branch of quantum mechanical scattering theory. However, it also serves as an introduction to many of the basic theoretical concepts which are used in inelastic electron scattering and ionization. Consequently this mono graph can be viewed as an introduction to texts where these subjects are treated.
Author : William Lewis Johnson
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (64 download)
Download or read book Elastic Scattering of Low-energy Electrons from Oxygen written by William Lewis Johnson and published by . This book was released on 1966 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cross sections for the elastic scattering of electrons from atomic oxygen are calculated in the energy range between 0 and 13.6 electron volts. Polarization of the atom is included by using a term in the potential function which has the correct asymptotic behavior and which vanishes at the origin. Previous theoretical and experimental results are discussed.
Author : D. F. C. Brewer
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (535 download)
Download or read book Low Energy Elastic Scattering of Electrons by Atoms Using a Co-axial Cone Spectrometer written by D. F. C. Brewer and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jacob Meyer Hammer
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (55 download)
Download or read book Low Energy Elastic Scattering of Electrons by Atomic Hydrogen written by Jacob Meyer Hammer and published by . This book was released on 1956 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lee Joseph Kieffer
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (31 download)
Download or read book Bibliography of Low Energy Electron and Photon Cross Section Data (through December 1974) written by Lee Joseph Kieffer and published by . This book was released on 1976 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gregg Dale Carse
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (221 download)
Download or read book Inelastic Scattering of Low Energy Electrons from Heavy Atoms written by Gregg Dale Carse and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 582 pages
Book Rating : 4.3/5 (91 download)
Download or read book NBS Special Publication written by and published by . This book was released on 1976 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
