Photoionization of helium above the He/sup +/(n = 2) threshold: Autoionization and final-state symmetry

Journal Article · Fri Feb 01 00:00:00 EST 1985 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.31.714· OSTI ID:6163462

Lindle, D W; Ferrett, T A; Becker, U; Kobrin, P H; Truesdale, C M; Kerkhoff, H G; Shirley, D A

The partial cross section, the satellite branching ratio, and the angular-distribution asymmetry parameter for simultaneous photoionization and excitation to the n = 2 states of the He/sup +/ ion have been measured in the 67.5--90-eV photon-energy range. In the nonresonance regions (67.5 eV< or =h..nu..< or =69.5 eV and 75 eV < or =h..nu..< or =90 eV), the asymmetry-parameter values have been used to infer the ratio of the 2p cross section to the 2s cross section. These results indicate that the He/sup +/(n = 2) satellite is predominantly 2p near threshold, in agreement with the experimental and most of th

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 and Department of Chemistry, University of California, Berkeley, California 94720
• OSTI ID: 6163462
• Journal Information: Phys. Rev. A; (United States), Vol. 31:2
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
640302* - Atomic
Molecular &amp; Chemical Physics- Atomic &amp; Molecular Properties &amp; Theory