摘要
介绍马乔拉纳(Majorana)跃迁对小型密封铯束频标的影响,及怎样降低马乔拉纳跃迁,提高铯束频标的准确度和稳定度。
In commercial atomic clock,the influence of Majorana transitions on the beam current and on the clock frequency was measured.The observed effects can be explainedby a theory based on Majorana's formula. It is well known that the so-called 'Majorana transitions' between the Zeema levels of the hyperfine states F=4 and F=3 are induced in Cs atoms moving in an inhomogeneous magnetic field. This is probably due to the imperfections of the quantization field,especially in the vicinity of the state-selecting.magne ted.in cesium beam frequency standards Majorana transitions are regarded as being harmful to the performance of the standard and are suppressed by trimming the magnetic feilds.
出处
《陕西天文台台刊》
CSCD
1990年第1期44-52,共9页
Publications of The Shaanxi Astronomical Observatiory
