Laser-induced charge-transfer collisions of calcium ions with strontium atoms
1981; American Institute of Physics; Volume: 24; Issue: 4 Linguagem: Inglês
10.1103/physreva.24.1750
ISSN0556-2791
AutoresM. D. Wright, D. O’Brien, J. F. Young, Stephen Harris,
Tópico(s)Advanced Chemical Physics Studies
ResumoExperimental studies of two laser-induced charge-transfer reactions in Ca and Sr are presented. In both reactions, a Ca ion collides with an Sr neutral in the presence of a laser field to produce a Ca neutral and an excited Sr ion. The two reactions differ in the final level of the ${\mathrm{Sr}}^{+}$ species. The collision cross sections associated with these reactions are studied as functions of applied laser frequency and power density. The largest cross section induced is equal to ${10}^{\ensuremath{-}16}$ ${\mathrm{cm}}^{2}$, obtained at a power density of 2\ifmmode\times\else\texttimes\fi{}${10}^{9}$ W/${\mathrm{cm}}^{2}$. Differences in experimental results associated with the two reactions are explained qualitatively by an examination of the potential curves of the Ca${\mathrm{Sr}}^{+}$ quasimolecule.
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