Electron-impact excitation of argon: Cross sections of interest in plasma modeling

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.052707· OSTI ID:21408834

Gangwar, R K; Srivastava, R ^[1]; Sharma, L ^[2]; Stauffer, A D ^[3]

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1. Department of Physics, Indian Institute of Technology, Roorkee 247667 (India)
2. Physikalisches Institut, Universitaet Heidelberg, D-69120 Heidelberg, Germany, and GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt (Germany)
3. Department of Physics and Astronomy, York University, Toronto M3J 1P3 (Canada)

We used the relativistic distorted-wave approximation to calculate the excitation of Ar from its ground-state 3p{sup 6} configuration to the higher lying fine-structure levels of the 3p{sup 5}3d, 3p{sup 5}5s, and 3p{sup 5}5p manifolds. The calculation has been performed with relativistic Dirac-Fock multiconfiguration wave functions for the ground and excited states. Results for the differential and integrated cross sections are obtained at energies in the range up to 100 eV, and these are compared with available experimental measurements and earlier theoretical nonrelativistic distorted-wave and R-matrix calculations. Analytic fits to our integrated cross sections are provided.

• OSTI ID: 21408834
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.052707; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
ARGON
CROSS SECTIONS
DISTORTED WAVE THEORY
ELECTRONS
EV RANGE
EXCITATION
EXCITED STATES
FINE STRUCTURE
GROUND STATES
PLASMA
R MATRIX
RELATIVISTIC RANGE
SIMULATION
WAVE FUNCTIONS
CALCULATION METHODS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FERMIONS
FLUIDS
FUNCTIONS
GASES
LEPTONS
MATRICES
NONMETALS
RARE GASES