Error analysis of the NIST optically pumped primary frequency standard
نویسندگان
چکیده
منابع مشابه
The NIST Optically Pumped Cesium Frequency Standard
The National Institute of Standards and Technology is developing an optically pumped, cesium-beam primary frequency standard. The design follows from an analysis of systematic errors found in cesium beam standards. The details of the design, performance of major subsystems, and preliminary tests of the standard are presented.
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We develop a comprehensive approach to the evaluation of the uncertainty of a primary frequency standard. Indirect, model-dependent means are employed for the evaluation of all known biases. This approach leads to a lower combined standard uncertainty (CSU) and leaves frequency measurements under altered conditions as a powerful search technique for unknown biases. We report the results of this...
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The velocity distributions of the optically pumped Cs frequency standard are measured using the sf pulse excitation method. The results are shifted toward higher beam velocity than the Maxwellian distribution and suggest a dependence on vacuum pressure. The velocity distribution is not sensitive to the laser power for pumping and detection, if the power is more than a few mW. The second-order D...
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Optically pumped helium magnetometers are important instruments whichhave many applications in military, mass spectroscopy and space applications. In thispaper, the working principles of helium magnetometers have been explained. There isalso an introduction of a new method for finding the resonant frequency, which hasadvantages to the typical method such as more sample r...
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ژورنال
عنوان ژورنال: IEEE Transactions on Instrumentation and Measurement
سال: 1993
ISSN: 0018-9456
DOI: 10.1109/19.278603