Systematic Uncertainty Evaluation of the Cesium Fountain Primary Frequency Standard at NPL India

被引：19
|
作者：
Acharya, A. [1 ,2 ]
Bharath, V. [1 ,2 ]
Arora, P. [1 ]
Yadav, S. [1 ]
Agarwal, A. [1 ]
Gupta, A. S. [1 ,3 ]
机构：
[1] CSIR, Natl Phys Lab, Time & Frequency Sect, Dr K S Krishnan Rd, New Delhi 110012, India
[2] Acad Sci & Innovat Res, Madras, Tamil Nadu, India
[3] NORTHCAP Univ, Gurgaon, India
来源：
MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA | 2017年 / 32卷 / 01期
关键词：
Laser cooling; Cold atom; Time scale; Atomic fountain clock; 1ST ACCURACY EVALUATION; CLOCK; TRANSITIONS; NIST-F1; DESIGN; CAVITY; SHIFT; ATOMS;
D O I：
10.1007/s12647-016-0190-4
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
CSIR-NPL, India (NPLI) has developed its first Cesium atomic fountain (NPLI-CsF1). The indigenously developed fountain frequency standard is now fully operational and its frequency is now being evaluated along with all systematic and statistical uncertainties. Seven frequency evaluations have been recently conducted to estimate fountain frequency with respect to UTC (Coordinate Universal Time). The fountain frequency is compared with the Hydrogen MASER frequency which is contributing to UTC and hence fountain frequency is evaluated with respect to the UTC The fountain frequency is stable to few parts in 10(15) at <1 day averaging time.
引用
收藏
页码：67 / 76
页数：10
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