Partial cross sections in H[sup [minus]] photodetachment
This dissertation reports experimental measurements of partial decay cross sections in the H[sub [minus]] photodetachment spectrum. Observed decays of the [sup 1]P[sub 0] H[sup [minus]**](n) doubly-excitedresonances to the H(N=2) continuum are reported for n=2,3, and 4 from 1990 runs in which the author participated. A recent analysis of 1989 data revealing effects of static electric fields on the partial decay spectrum above 13.5 eV is also presented. The experiments were performed at the High Resolution Atomic Beam Facility. the Los Alamos Meson Physics Facility, with a relativistic H[sup [minus]]beam ([beta]=0.842)intersecting a ND:YAG laser. Variation of the intersection angle amounts to Doppler-shifting the photon energy, allowing continuous tuning of the laser energy as viewed from the moving ions' frame.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6607314
- Report Number(s):
- LA-12533-T; ON: DE93011570
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
BRANCHING RATIO
CHARGED PARTICLES
CROSS SECTIONS
DATA
ELECTROMAGNETIC RADIATION
ELECTRON DETACHMENT
EXPERIMENTAL DATA
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
INFORMATION
IONIZATION
IONS
LASER RADIATION
MATRICES
NUMERICAL DATA
PHOTOIONIZATION
R MATRIX
RADIATIONS