THE NEW PTB PRIMARY CESIUM CLOCKS

被引：3

作者：

BAUCH, A

FISCHER, B

HEINDORFF, T

SCHRODER, R

机构：

[1] Physikalisch-Technische Bundesanstalt, D-3300, Braunschwesig

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1993年 / 42卷 / 02期

关键词：

D O I：

10.1109/19.278601

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

One of the two primary clocks with a vertically directed cesium beam, CS4, has been running at constant operating parameters as a frequency standard since November 1991. Its main design features are reported. The contributions to its frequency uncertainty connected with C field, cavity phase difference, and second-order Doppler effect are given. The relative frequency difference between CS4 and CS2 averaged over six months is -12 . 10(-15). The measured frequency instability of CS4 is 8 . 10(-12)/square-root tau for sample times tau, 300 s less-than-or-equal-to tau less-than-or-equal-to 20000 s.

引用

页码：444 / 447

页数：4