Near-threshold behavior of angular anisotropy parameters in negative-ion photodetachment

Journal Article · Thu Sep 15 04:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.032727· OSTI ID:20718565

Amusia, M Ya ^[1]; Baltenkov, A S ^[2]; Chernysheva, L V ^[3]; Felfli, Z; Msezane, A Z ^[4]

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1. Racah Institute of Physics, the Hebrew University, 91904 Jerusalem (Israel)
2. Arifov Institute of Electronics, Akademgorodok, 700125 Tashkent (Uzbekistan)
3. Ioffe Physical-Technical Institute, 194021 St. Petersburg (Russian Federation)
4. Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, Georgia 30314 (United States)

We have investigated the near-threshold behavior of the dipole and nondipole angular anisotropy parameters in photodetachment of the negative ion I{sup -} by performing both analytical and numerical calculations. The numerical calculations of the angular asymmetry parameters were carried out both in the one-electron Hartree-Fock (HF) approximation and with account of the many-electron correlations within the framework of the random phase approximation with exchange (RPAE). The calculated results are presented for the outer and intermediate subshells of the iodine negative ion I{sup -} and contrasted with those of the neutral neighbor atom Xe. Essential differences in the HF and RPAE near-threshold behavior of the angular distribution parameters between the negative ion and the neutral atom are demonstrated.

• OSTI ID: 20718565
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ANIONS
ANISOTROPY
ASYMMETRY
ATOMS
DIPOLES
ELECTRON CORRELATION
ELECTRON DETACHMENT
ELECTRONS
HARTREE-FOCK METHOD
HYDROFLUORIC ACID
IODINE
IODINE IONS
PHOTON-ATOM COLLISIONS
RANDOM PHASE APPROXIMATION
XENON