Resonance scattering of low-energy electrons from potassium atoms
- 11 January 1976
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 9 (1) , 101-110
- https://doi.org/10.1088/0022-3700/9/1/011
Abstract
The elastic and inelastic differential cross sections for electron-potassium scattering have been measured in a crossed-beam experiment in the energy range 2 to 3.2 eV and for scattering angles from 20 degrees to 140 degrees . In the elastic channel three resonances have been observed at 2.4 eV, 2.6 eV and 2.68 eV and were found to be S, D and P (or F) states respectively. The lifetime of the D resonance was estimated to be 1.0*10-14 s+or-20%. In the excitation function of the 42P channel at least one resonance has been observed, the shape of which appears to be overlapped by threshold effects at 2.6 eV.Keywords
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