Transfer between the cesium 6~2P_(1/2) and 6~2P_(3/2) levels induced by collisions with H_2, HD, D_2, CH_4,C_2H_6, CF_4, and C_2F_6

摘要

The cross sections of spin-orbit energy exchange between the cesium 6~2P_(1/2) → 6~2P_(3/2) states induced by collisions with N_2, H_2, HD, D_2, CH_4, C_2H_6, CF_4, andC_2F_6 were obtained for pressures less than 100 Torr at room temperature by means of steady-state laser-induced fluorescence techniques. The spin-orbit energy exchange rate with N_2, H_2, HD, D_2, CH_4, C_2H_6, CF_4, and C_2F_6, have been measured as σ21(6~2P_(3/2) → 6~2P_(1/2)) = 16.3,34.1, 30.0, 22.7, 21.4, 65.6, 64.8, and 137 A~2 and σ_(12)(6~2P_(1/2) → 6~2P_(3/2)) = 1.8, 4.4, 4.1, 3.0, 2.9, 13.3, 9.7, and 16.3 A~2, respectively. Correlations of the spin-orbit transfer probabilities with rotational-energy defect and vibrational-energy defect have been shown.