Accession Number : AD0282812

Title :   THE EFFECTS OF DEGENERACY ON THE INELASTIC SCATTERING OF ELECTRONS AND PROTONS BY HYDROGEN ATOMS

Corporate Author : WISCONSIN UNIV MADISON THEORETICAL CHEMISTRY INST

Personal Author(s) : ROBINSON,P.D.

Report Date : 02 JUL 1962

Pagination or Media Count : 1

Abstract : An investigation is made of the effects of 2s:2p degeneracy on cross-sections for the 1s 2p and 1s 2s excitation of hydrogen atoms by electron and proton impact. The initial relative energy ranges considered are 10.2 to 50 e.v. for electrons and 0.25 to 50 k.e.v. for protons. A simple rotating axis approximation of Bates is employed, and the degeneracy is allowed for by using spheroidal atomic wave functions in the matrix elements rather than pure 2s or 2p functions. These spheroidal functions are varying linear combinations of 2s and 2p, and are the correct zero-order functions for the atom perturbed by a charged particle. The degeneracy effects are measured by comparing the direct cross-sections found using the pure 2s and 2p functions with the indirect cross-sections obtained from the spheroidal functions. The indirect results are quite different from the direct ones for slow collisions, both for electron and for proton impact. (Author)

Descriptors :   *ALPHA DECAY, *ATOMS, *ELECTRONS, *HYDROGEN, *INELASTIC SCATTERING, *PROTONS, BOMBARDMENT, DIFFERENTIAL EQUATIONS, EXCITATION, FUNCTIONS(MATHEMATICS), IMPACT SHOCK, INTEGRAL EQUATIONS, MATRICES(MATHEMATICS), PROTON CROSS SECTIONS, SHOCK WAVES, SPHERES, VECTOR ANALYSIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE