Excitation of Atomic Hydrogen to the $n = 2$ State by Helium Ions

Publisher Website

19 March 1979

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 42 (12) , 759-762
https://doi.org/10.1103/physrevlett.42.759

Abstract

Differential and total cross sections for

{He}^{+} (1 s) + H (1 s) \to {He}^{+} (1 s) + H (n = 2)

are calculated using a formalism developed for ion-atom and atom-atom collisions. Results are obtained in terms of amplitudes for electron-hydrogen (

e H

) and proton-hydrogen (

p H

)

n = 2

excitations and elastic scattering of electrons by a (

p + e

)-"atom," the

{He}^{+}

(

1 s

) form factor, and the

n = 2

form factors of hydorgen. Agreement with recent data is good. A remarkably simple approximation,

σ \approx σ_{p H} (1 s \to n = 2) + 3 σ_{p H} (1 s \to 2 s)

, is obtained and agrees with recent data.

Keywords

This publication has 10 references indexed in Scilit:

Coupled-state calculations of proton—hydrogen-atom scattering using a scaled hydrogenic basis set
Physical Review A, 1978
Cross section for production of the metastable $H (2 S)$ state in proton collisions with atomic hydrogen
Physical Review A, 1977
Production of Lyman- $α$ radiation in collisions of protons and hydrogen atoms
Physical Review A, 1974
Elastic and 2s and 2p inelastic scattering of atomic hydrogen by helium-ions
Journal of Physics B: Atomic and Molecular Physics, 1974
Formation of H(2p) and H(2s) atoms in collisions of 2-26 keV protons with hydrogen atoms
Journal of Physics B: Atomic and Molecular Physics, 1973
Elastic and Inelastic Scattering of Protons by Hydrogen Atoms
Physical Review A, 1971
Glauber Amplitudes in Charged Particle Hydrogen Atom Collisions
Journal of Mathematical Physics, 1971
Coupled-state calculations of proton-hydrogen scattering with a pseudo-state expansion
Journal of Physics B: Atomic and Molecular Physics, 1970
The 2s and 2p excitations of hydrogen by proton and helium-ion impact
Journal of Physics B: Atomic and Molecular Physics, 1969
Inelastic Collisions between Heavy Particles I: Excitation and Ionization of Hydrogen Atoms in Fast Encounters with Protons and with other Hydrogen Atoms
Proceedings of the Physical Society. Section A, 1953