Ultra-stable Hg/sup +/ trapped ion frequency standard
Ultra-stable Hg/sup +/ trapped ion frequency standard
复制标题
超稳定 Hg/sup/捕获离子频率标准
DOI:
10.1109/freq.1991.145953
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
L. Maleki
中科院分区:
文献类型:
--
作者:
J. Prestage;R. Tjoelker;G. Dick;L. Maleki
The authors report the development of a fieldable frequency standard based on /sup 199/Hg/sup +/ ions confined in a hybrid RF/DC linear ion trap. This trap permits storage of large numbers of ions with reduced susceptibility to the second-order Doppler effect caused by the RF confining fields. A 160-mHz-wide atomic resonance line for the 40.5-GHz clock transition is used to steer the output of a 5-MHz crystal oscillator to obtain a stability of 2*10/sup -15/ for 24000 second averaging times. For long averaging intervals measurements are limited by instabilities in available hydrogen maser frequency standards.<<ETX>>