Charge transfer into the metastable2Slevel of hydrogen by protons colliding with K and Na
- 1 February 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 29 (2), 611-616
- https://doi.org/10.1103/physreva.29.611
Abstract
We measure the charge transfer cross section for protons in potassium and sodium with the final state being . Using a crossed-beam experimental method we look at this cross section as a function of proton beam energy from 500 to 2500 eV. Our results for potassium agree with previous experiments and theories in showing two main peaks in the cross section: one of (3.9 ± 1.5)× at a proton beam energy of 800 eV, and another of (2.8± 1.1)× at a proton beam energy of 2.5 keV. Our results for sodium show a steadily rising cross section with a value of (7.3± 2.5)× at a proton beam energy of 2.5 keV in agreement with the prediction of Kubach and Sidis; we do not find the maximum at 700 eV reported by Nagata that agrees with the theory of Kimura, Olson, and Pascale.
Keywords
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