Utilising a crossed electron-beam-atom-beam collision technique electron impact differential cross sections at 7, 20, 40, 60 and 100 eV incident energies have been determined for elastic scattering and for the following transitions from the ground state (4 2 S) to (a) 4 2 P, (b) 5 2 S+3 2 D, (c) 5 2 P, (d) 4 2 D+6 2 S+4 2 F+6 2 P and (e) 5 2 D+7 2 S+5 2 F states in potassium. Measurements were done in the scattering angular range of 5 to 120 degrees . Values at angles smaller than 5 degrees and larger than 120 degrees have been obtained from extrapolation and the integral and momentum transfer cross sections have been calculated. Results are compared with available experimental and some selected theoretical data.
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Vušković et al. (1980) studied this question.
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