Coincidence studies of quasimolecular electron emission in 700-keV Ar sup 2+ -Kr collisions

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.2335· OSTI ID:5555170

Shanker, R ^[1]; Werner, U; Bilau-Faust, R; Hippler, R ^[2]; Wille, U ^[3]

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1. Department of Physics, Banaras Hindu University, Varanasi-221005, India (IN)
2. Fakultat fur Physik, Universitat Bielefeld, D-4800 Bielefeld, Federal Republic of Germany
3. Bereich Kern- und Strahlenphysik, Hahn-Meitner-Institut fur Kernforschung Berlin G.m.b.H., Postfach 390128, D-1000 Berlin 39, Federal Republic of Germany

Continuum electron emission following 700-keV Ar{sup 2+}-Kr collisions has been investigated by detecting electrons in coincidence with projectile ions scattered through laboratory angles between 5{degree} and 20{degree}. From the analysis of the experimental data in terms of quasimolecular Auger-electron emission, molecular-orbital binding energies at small internuclear distances as well as collision-broadening parameters have been inferred. The results indicate that the electron emission is dominated by the decay of 4{ital s}{sigma} and 4{ital p}{pi} vacancies in the highly charged Ar-Kr quasimolecule. The analysis also reveals the presence of an exponentially decreasing high-energy tail of the spectra, which cannot be ascribed to quasimolecular Auger electrons and which has not been taken into account in previous analyses.

• OSTI ID: 5555170
• Journal Information: Physical Review (Section) A: General Physics; (USA), Journal Name: Physical Review (Section) A: General Physics; (USA) Vol. 40:5; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
AUGER EFFECT
BINDING ENERGY
CHARGED PARTICLES
COINCIDENCE METHODS
COLLISIONS
COUNTING TECHNIQUES
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELECTRON SPECTRA
ELEMENTS
ENERGY
ENERGY RANGE
FLUIDS
GASES
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 100-1000
KRYPTON IONS
NONMETALS
RARE GASES
SPECTRA
TRANSIENTS