Branching ratio of the H sup minus ( n =2) shape resonance

Journal Article · Tue Dec 01 00:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.46.6942· OSTI ID:6948003

Halka, M; Bryant, H C; Johnstone, C; Marchini, B; Miller, W; Mohagheghi, A H; Tang, C Y ^[1]; Butterfield, K B; Clark, D A; Cohen, S; Donahue, J B; Gram, P A.M.; Hamm, R W; Hsu, A; MacArthur, D W; MacKerrow, E P; Quick, C R; Tiee, J ^[2]; Rozsa, K ^[3]

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1. Department of Physics and Astronomy, The University of New Mexico, Albuquerque, New Mexico 87131 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. Hungarian Academy of Sciences, Budapest (Hungary)

The relative photodetachment cross section for decay into the H({ital N}=2) channel by the {sup 1}{ital P}{degree} shape resonance in H{sup {minus}} was measured, as well as that for decay into all channels. The branching ratio {sigma}({ital N}=2)/{sigma}(total) was computed for a series of energies between 10.95 and 11.3 eV after normalizing the cross sections to theoretical peak amplitudes. The maximum branching ratio ({approx}0.8) appears at an energy about 20 meV higher than the central energy of the resonance. Results are compared with recent theoretical calculations.

• OSTI ID: 6948003
• Journal Information: Physical Review A. General Physics; (United States), Vol. 46:11; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HYDROGEN IONS 1 MINUS
PHOTOIONIZATION
CROSS SECTIONS
EXCITED STATES
EXPERIMENTAL DATA
HYDROGEN 1 MINUS BEAMS
RESONANCE
ANIONS
BEAMS
CHARGED PARTICLES
DATA
ENERGY LEVELS
HYDROGEN IONS
INFORMATION
ION BEAMS
IONIZATION
IONS
NUMERICAL DATA
664200* - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-)