K-shell excitation probabilities in 32 MeV S on Ar collisions
- 14 December 1980
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 13 (23) , 4599-4606
- https://doi.org/10.1088/0022-3700/13/23/017
Abstract
In collisions of 32 MeV Sn+ on Ar, impact parameter dependent K-shell excitation probabilities PK(b) have been determined for n=5, 11, and absolute K-shell excitation cross sections sigma K for n=5-13. A comparison between PK(b) and the 2p pi -2p sigma rotational coupling model clearly shows the main contribution to the total K-shell excitation cross section sigma K to be due to rotational coupling. This is also true for S5+ where no static L vacancies are present prior to the collision. The increase of sigma K with projectile charge state n+ (for 5K, the contribution of direct 2p sigma excitation is found to be important.Keywords
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