Variation of photoelectron angular distributions along the Ar and Ca isonuclear sequences

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.063401· OSTI ID:21437910

Pradhan, G B; Jose, J; Deshmukh, P C ^[1]; Radojevic, V ^[1]; Manson, S T ^[2]

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1. Department of Physics, Indian Institute of Technology, Madras, Chennai 600 036 (India)
2. Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303 (United States)

The dipole angular distribution asymmetry parameter, {beta}, for photoelectrons resulting from 2p photoionization of Ar, Ar{sup 6+}, and Ar{sup 8+} and Ca, Ca{sup 2+}, and Ca{sup 8+} of the Ar (Z=18) and Ca (Z=20) isonuclear sequences, respectively, have been studied using the relativistic random-phase approximation over a broad range of photon energy. In the absence of relaxation, it is known that inner-shell cross sections are essentially unchanged, as a function of photon energy, upon the removal of outer-shell electrons. The present results show that this is not true for the photoelectron angular distribution asymmetry parameters, particularly near the ionization thresholds.

• OSTI ID: 21437910
• Journal Information: Physical Review. A, Vol. 81, Issue 6; Other Information: DOI: 10.1103/PhysRevA.81.063401; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ARGON
ARGON IONS
ASYMMETRY
CALCIUM
CALCIUM IONS
CROSS SECTIONS
DIPOLES
ELECTRONS
MULTICHARGED IONS
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PHOTONS
RANDOM PHASE APPROXIMATION
RELATIVISTIC RANGE
RELAXATION
VARIATIONS
ALKALINE EARTH METALS
APPROXIMATIONS
ATOM COLLISIONS
BOSONS
CALCULATION METHODS
CHARGED PARTICLES
COLLISIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FLUIDS
GASES
IONIZATION
IONS
LEPTONS
MASSLESS PARTICLES
METALS
MULTIPOLES
NONMETALS
PHOTON COLLISIONS
RARE GASES