Charge-exchange cross sections forNe+andAr+incident on Cs

Abstract

Total charge-exchange cross sections have been measured for ${\mathrm{Ne}}^{+}$ and ${\mathrm{Ar}}^{+}$ incident on Cs vapor. Ion beam energies for ${\mathrm{Ne}}^{+}$ incident on Cs were in the energy range 1.72-40.2 keV. The cross section ${\sigma }_{+0\mathrm{}}$ for the incident ${\mathrm{Ne}}^{+}$ ions has the almost constant value of (540 ± 60) × ${10}^{-17\mathrm{}}$ ${\mathrm{cm}}^2$ in the energy range 1.72-7.0 keV. The cross section increases from 7 to 20 keV, reaching another plateau of (1010 ± 70) × ${10}^{-17\mathrm{}}$ ${\mathrm{cm}}^2$ in the energy range 20-40.2 keV. Ion beam energies for the ${\mathrm{Ar}}^{+}$ ions incident on Cs were in the energy range 1.44-28.7 keV. The cross section ${\sigma }_{+0\mathrm{}}$ is (710 ± 63) × ${10}^{-17\mathrm{}}$ ${\mathrm{cm}}^2$ at 1.44 keV. The cross section increases between 1.44 and 8.6 keV, reaching a plateau of (1020 ± 90) × ${10}^{-17\mathrm{}}$ ${\mathrm{cm}}^2$ in the energy range 8.6-28.7 keV.