Energy and angular distributions of backscattered electrons from the collision of 8-keV electrons with a thick tungsten target

Journal Article · Mon Nov 01 04:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.052901· OSTI ID:20646231

Yadav, R K; Shanker, R ^[1]

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1. Atomic Physics Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221 005 (India)

The energy and angular distributions of backscattered electrons produced under impact of 8.0-keV electrons with a thick tungsten target are measured. The energy range of backscattered electrons is considered between 70 and 1700 eV. The angle of incidence {alpha} and the takeoff angle {theta} are chosen to have values {alpha}=0 deg., 10 deg., and 20 deg. and {theta}=110 deg., 120 deg., and 130 deg., respectively. The energy distribution function exhibits two sharp peaks, which are found to appear at 216 and 548 eV. They are identified as Auger peaks of tungsten arising due to electron transitions 4d-6s6p and 4s-6s6p, respectively. The measured energy spectra are compared with two different theoretical models. The theoretical predictions are found to yield a good agreement with the experiment in the considered energy range of the backscattered electrons.

• OSTI ID: 20646231
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
AUGER ELECTRON SPECTROSCOPY
BACKSCATTERING
ELECTRON-ATOM COLLISIONS
ELECTRONS
ENERGY SPECTRA
EV RANGE
INCIDENCE ANGLE
KEV RANGE
SURFACES
TUNGSTEN