Extensive [ital L][sup 2] calculation of partial photoionization cross sections of He in the 4[ital lnl][prime] resonance region

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

DOI:https://doi.org/10.1103/PhysRevA.48.1243· OSTI ID:6172852

Sanchez, I; Martin, F ^[1]

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

We present a fully-[ital L][sup 2]-integrable calculation of the partial photoionization cross sections of He between the [ital N]=3 and 4 thresholds. The energy positions, total and partial autoionization widths, and Fano and Starace parameters for the 4[ital lnl][prime] doubly excited states lying in this region are also provided. We have found that only one series of resonances with large autoionization widths is observed in the total-cross-section spectrum. On the other hand, several resonance series are exhibited in the partial [ital N]=3 cross sections. Our results also show that the 2[ital p] and 3[ital p] cross sections dominate the [ital N]=2 and 3 ones, respectively. Good agreement with the existing experimental data is found.

• OSTI ID: 6172852
• 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

664100* -- Theory of Electronic Structure of Atoms & Molecules-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
AUTOIONIZATION
CROSS SECTIONS
ELEMENTS
ENERGY
ENERGY LEVELS
EXCITED STATES
FANO FACTOR
FLUIDS
GASES
HELIUM
IONIZATION
NONMETALS
PHOTOIONIZATION
RARE GASES
RESONANCE ABSORPTION
SORPTION
THRESHOLD ENERGY