Photodetachment of H[sup [minus]] with excitation to H([ital N]=2)

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.1227· OSTI ID:6074327

Cortes, M; Martin, F ^[1]

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1. Departamento de Quimica C-14, Universidad Autonoma de Madrid, 28049-Madrid (Spain)

We have applied a recently proposed [ital L][sup 2] method to evaluate total and partial photodetachment cross sections of H[sup [minus]] up to the [ital N]=3 threshold. The method was specially designed to evaluate continuum states when interchannel coupling is very strong, so that the H[sup [minus]] ion is an ideal system to test its validity. The calculated cross sections exhibit two Feshbach resonances below [ital N]=2, the well-known shape resonance just above that threshold, and five Feshbach resonances converging to [ital N]=3. The structure of these resonances is analyzed in detail, as well as the behavior of the partial cross sections in these regions. We also provide a complete set of Fano and Starace parameters that are useful to interpret the total and partial photodetachment spectra in the resonance regions. Finally, our results are compared with the available experimental data as well as with other theoretical calculations.

• OSTI ID: 6074327
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:2; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
CHARGED PARTICLES
CROSS SECTIONS
ELEMENTS
ENERGY
ENERGY LEVELS
EXCITED STATES
FANO FACTOR
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
IONIZATION
IONS
NONMETALS
PHOTOIONIZATION
RESONANCE
THRESHOLD ENERGY