Sidney Borowitz eBooks
eBooks di Sidney Borowitz editi da Forgotten Books
A Variational Calculation of the Elastic: Scattering of Electrons, by Hydrogen Atoms. E-book. Formato PDF Sidney Borowitz - Forgotten Books, 2017 -
One of the important problems of upper atmospheric and astrophysical research is the determination of the frequencies of collisions between electrons and atomic systems. Informa tion on this subject can be obtained from a knowledge of the total cross-section, Q, and to some extent from the differential cross-section, (hg), of the collision. The temperatures at which these collisions occur are of such a magnitude that the electron energies are of the order of a fraction of an electron volt, and at these low energies the problems associated with experimental determinations of the cross-sections become complex. Consequently there is a deficiency of experimental data. It is therefore essential to have theoretical methods for calculating the cross-sections.
The Green's Function Method for Quantum Corrections to the Thomas-Fermi Model of the Atom. E-book. Formato PDF Sidney Borowitz - Forgotten Books, 2017 -
The thomas-fermi model of the atom developed historically from reasonable physical assumptions about the nature of an atomic system. Because, however, the development was not a systematic derivation from the many body schrsdinger equation, it was difficult to incorporate corrections for certain higher order effects. Thus.