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Determination of the 5d6p 3F4-5d2 3F transition probabilities of Ba I

Determination of the 5d6p 3F4-5d2 3F transition probabilities of Ba I
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摘要 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 3Fa-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. 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 3Fa-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.
出处 《Frontiers of physics》 SCIE CSCD 2012年第2期235-238,共4页 物理学前沿(英文版)
关键词 laser cooling leakage rate transition probability scaled Thomas-Fermi-Dirac method laser cooling, leakage rate, transition probability, scaled Thomas-Fermi-Dirac method
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