Determination of cross sections and oscillator strengths for argon by electron-energy-loss spectroscopy

Journal Article · Mon Aug 01 04:00:00 EDT 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.38.1240· OSTI ID:7023045

Li, G P; Takayanagi, T; Wakiya, K; Suzuki, H; Ajiro, T; Yagi, S; Kano, S S; Takuma, H

Absolute differential cross sections for the 3p/sup 6/ /sup 1/S/sub 0/ ..-->..3p/sup 5/(/sup 2/P/sub 1/2/)4s, (/sup 2/P/sub 3/2/)4s excitation in argon have been measured at impact energies of 400 and 500 eV, and at scattering angles between 1.75/sup 0/ and 10.3/sup 0/ by electron-energy-loss spectroscopy. The integrated cross sections and generalized oscillator strengths (GOS's) have also been determined at 400 and 500 eV. The optical oscillator strengths have been determined, by extrapolating the GOS's to zero momentum transfer, as 0.222/sub -0.03//sup +0.02/ for the (/sup 2/P/sub 1/2/)4s state and 0.058/sub -0.008//sup +0.005/ for the (/sup 2/P/sub 3/2/)4s state. These data are compared with the results of other optical measurements in the vacuum-ultraviolet region. The errors are estimated to be less than 14%.

• Research Organization: Department of Physics, Sophia University, Chiyoda-ku, Tokyo 102, Japan
• OSTI ID: 7023045
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 38:3; 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
ELECTRON COLLISIONS
ELECTRON SPECTROSCOPY
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
ENERGY-LOSS SPECTROSCOPY
EV RANGE
EV RANGE 100-1000
EXCIMER LASERS
EXCITATION
EXPERIMENTAL DATA
FLUIDS
GAS LASERS
GASES
INFORMATION
KINETICS
LASERS
NONMETALS
NUMERICAL DATA
OSCILLATOR STRENGTHS
RARE GASES
SPECTROSCOPY