Lifetime and hyperfine splitting measurements on the 7s and 6p levels in rubidium
Lifetime and hyperfine splitting measurements on the 7s and 6p levels in rubidium
复制标题
DOI：
10.1364/josab.21.002058
复制
发表时间：
2004-09
影响因子：
1.9
通讯作者：
E. Gomez;S. Aubin;L. Orozco;G. D. O. Physics;Astronomy;State University of New York;S. Brook;
中科院分区：
文献类型：
--
作者：
E. Gomez;S. Aubin;L. Orozco;G. D. O. Physics;Astronomy;State University of New York;S. Brook;
我们目前的寿命测量的7S 1/2水平和6p流形的铷。我们对磁光阱中限制和冷却的85 Rb原子样本使用时间相关单光子计数技术。5 P1/2再抽运跃迁的上能级作为7s能级双光子激发的共振中间能级。探测激光提供了第二步的激发，我们检测到原子荧光的衰减到5 P3/2水平在741 nm。衰变过程为6 p流形提供能量，该流形衰变到5s基态，发射紫外光子。我们测量的寿命为88.07±0.40和120.7±1.2 ns的7S 1/2能级和6p流形，分别为282.6±1.6 MHz的7S 1/2能级的超精细分裂。与理论计算的协议确认了所涉及的波函数的理解，并提供了信心的可能性提取弱相互作用常数的奇偶非守恒测量。
We present lifetime measurements of the 7S1/2 level and the 6p manifold of rubidium. We use a time-correlated single-photon counting technique on a sample of 85Rb atoms confined and cooled in a magneto-optic trap. The upper state of the 5P1/2 repumping transition serves as the resonant intermediate level for two-photon excitation of the 7s level. A probe laser provides the second step of the excitation, and we detect the decay of atomic fluorescence to the 5P3/2 level at 741 nm. The decay process feeds the 6p manifold that decays to the 5s ground state emitting UV photons. We measure lifetimes of 88.07±0.40 and 120.7±1.2 ns for the 7S1/2 level and 6p manifold, respectively; the hyperfine splitting of the 7S1/2 level is 282.6±1.6 MHz. The agreement with theoretical calculations confirms the understanding of the wave functions involved and provides confidence on the possibility of extracting weak interaction constants from a parity nonconservation measurement.