Scattering of electrons from argon atoms

Journal Article · Sun Dec 01 04:00:00 EST 1985 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.32.3335· OSTI ID:6238172

Dasgupta, A; Bhatia, A K

The scattering of electrons from argon atoms is studied by the method of polarized orbitals. The 3p..-->..d perturbed orbital calculated using the Sternheimer approximation gives the polarizability 14.29a/sub 0//sup 3/. The perturbation of the orbitals 1s, 2s, 2p, and 3s is taken into account by renormalizing the 3p..-->..d orbitals to give the experimental value 11.06a/sub 0//sup 3/. Using only the modified orbital in the total wave function, phase shifts for various partial waves have been calculated in the exchange, exchange-adiabatic, and polarized-orbital approximations. They are compared with the results of the previous calculations. The calculated total elastic, differential, and momentum-transfer cross sections are compared with the experimental results. The elastic total cross sections obtained in the polarized-orbital approximation agree very closely with the recently measured cross sections by Jost et al. and Nickel et al. The critical point (the value of k/sup 2/ and theta at which the differential cross section is minimum) is at 0.306 eV and 80/sup 0/, in good agreement with the measurements of Weyhreter et al.

• Research Organization: Laboratory for Astronomy and Solar Physics, Atomic Physics Office, National Aeronautics and Space Administration, Goddard Space Flight Center, Greenbelt, Maryland 20771
• OSTI ID: 6238172
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 32:6; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
FLUIDS
FOUR MOMENTUM TRANSFER
GASES
INFORMATION
MOMENTUM TRANSFER
NONMETALS
NUMERICAL DATA
PARTIAL WAVES
PHASE SHIFT
RARE GASES
SCATTERING
THEORETICAL DATA
TOTAL CROSS SECTIONS