Principal Quantum Number Dependence for Positron-Hydrogen Scattering

Abstract

Over the last two decades, there has been considerable interest in the electron-atom and positron-atom scattering problems. Most of this work has concentrated on elastic scattering and excitation of the lowest energy states. However, due to recent technological advances, it is now becoming possible to examine the excitation of higher lying states experimentally. The important question then concerns whether these higher states contain new information. Earlier, we have examined this issue for electron-hydrogen scattering. The purpose of this work is to examine the N dependence for positron-hydrogen scattering. The second-order distorted-wave method has been used to calculate scattering amplitudes for excitation of s- and p-states of hydrogen for N = 2, 3, 4, 5 and 6. The N dependence of the integrated cross sections, differential cross sections and polarization fractions will be discussed for energies up to 1 keV and the results will be compared with those for electron-hydrogen scattering.

Department(s)

Physics

Keywords and Phrases

Atoms; Electron energy levels; Elementary particles; Matrix algebra; Quantum theory; Scattering; Positrons; Hydrogen

International Standard Serial Number (ISSN)

0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1996 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 May 1996

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