He photoionization to the doubly excited (2[ital pnd]) and ([ital sp],2[ital n][sup [minus]]) [sup 1][ital P[ital o]] series

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.47.3441· OSTI ID:6708171

Chang, T N ^[1]

---

1. Department of Physics, University of Southern California, Los Angeles, California 90089-0484 (United States)

We present an application of a configuration-interaction method for the [ital continuum] [ital spectrum] to He photoionization from the ground state to the doubly excited (2[ital pnd]) and ([ital sp],2[ital n][sup [minus]]) [sup 1][ital P[ital o]] series, using a finite [ital L][sup 2]-basis set constructed from a nearly complete set of spline-based one-particle hydrogenic orbitals. Our calculated resonance structures are in good agreement with the recent high-resolution synchrotron-radiation spectra [M. Domke, G. Remmers, and G. Kaindl, Phys. Rev. Lett. 69, 1171 (1992)]. Our calculated widths, resonance energies, and peak photoionization cross sections are also in close agreement with the most accurate existing theoretical results.

• OSTI ID: 6708171
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 47:4; 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
ATOM COLLISIONS
BREMSSTRAHLUNG
CALCULATION METHODS
COLLISIONS
CROSS SECTIONS
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
HELIUM
IONIZATION
NONMETALS
P STATES
PHOTOIONIZATION
PHOTON COLLISIONS
PHOTON-ATOM COLLISIONS
RADIATIONS
RARE GASES
RESONANCE
SYNCHROTRON RADIATION
TOTAL CROSS SECTIONS