Charge-exchange cross sections for Kr+ and Xe+ incident on Cs

Total charge-exchange cross sections for Kr⁺ and Xe⁺ incident on Cs have been measured. The energy of the incident ion was in the range 1.0-28.7 keV for Kr⁺ and in the range 1.0-17.2 keV for Xe⁺. The cross section σ₊₀ for Kr⁺ incident on Cs is (884 ± 86) × 10⁻¹⁷ cm² at 1.0 keV, and increases to (1171 ± 41) × 10⁻¹⁷ cm² at 5.0 keV. From 5.0 up to 28.7 keV, the cross section lies between 1100 × 10⁻¹⁷ and 1200 × 10⁻¹⁷ cm². The cross section σ₊₀ for Xe⁺ incident on Cs is (942 ± 53) × 10⁻¹⁷ cm² at 1.0 keV, and increases to (1297 ± 71) × 10⁻¹⁷ cm² at 7.2 keV. From 7.2 to 17.2 keV, the cross section lies between 1250 × 10⁻¹⁷ cm² and 1440 × 10⁻¹⁷ cm².