Determination of the 5d6p 3F4-5d2 3F transition probabilities of Ba I
Jiaqi Zhong, Geng-Hua Yu, Jin Wang +1 more
Whether the transitions between 6s5d 3D and 5d6p 3F can be used for laser cooling of barium heavily depends upon the transition probabilities of 5d6p 3F-5d2 3F. Taking the transition 6s5d 3D3-5d6p 3F4 as a scale, the leakage rate of 5d6p 3F4-5d2 3F was used to evaluate the transition probabilities. 706 nm laser pulses with different durations were applied to a barium atomic beam for 6s5d 3D3-5d2 3F4 optical pumping, and the remaining percentages in 6s5d 3D3 were measured. After exponential fitting, the transition probability of 5d6p 3F4-5d2 3F3,4 was determined to be 2.1(4)×104 s−1, which is in agreement with theoretical calculations using the scaled Thomas-Fermi-Dirac method.
Frontiers of Physics•Jul 8, 2011•0 citations