Lifetime and Collisional Depopulation Cross Section for the 142D3/2 State of Rb |
| B. Bieniak, M. Głódź, P. Grzegorzewski and J. Szonert Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland |
| Received: December 31, 1993 |
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| The lifetime τ and the cross section σ for depopulation induced by collisions with ground-state Rb atoms were measured for the 142D3/2 state of Rb. The experiment was performed in the gas-cell conditions in a range of Rb vapour temperatures in the vicinity of 340 K. The lifetime value τ = 1970(130) ns, agrees with the theoretical prediction with allowance for the influence of blackbody radiation as well as of the effects due to core polarizability and spin-orbit interaction. The measured cross section σ = 6.5(3.1) × 10-12 cm2 is close to the geometrical cross section. This agrees with similar observations made by other authors for the case of the lower n2D states of Rb. |
| DOI: 10.12693/APhysPolA.85.813 PACS numbers: 32.70.Fw, 34.60.+z |