Temperature fluctuations in a solid-nitrogen cooled secondary frequency standard

被引：6

作者：

Hartnett, JG ^{[1
]}

Tobar, ME ^{[1
]}

Ivanov, EN ^{[1
]}

Bilski, P ^{[1
]}

机构：

[1] Univ Western Australia, Dept Phys, Frequency Stand & Metrol Res Grp, Crawley, WA 6009, Australia

来源：

CRYOGENICS | 2002年 / 42卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

fractional temperature fluctuations;

D O I：

10.1016/S0011-2275(01)00178-3

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Liquid helium and liquid nitrogen are commonly used as coolants for highly frequency stable oscillators. In this paper. e present the use of solid nitrogen as an alternative coolant. Solid nitrogen solidifies near 52 K under vacuum and we show that the temperature fluctuations in the solid are an order of magnitude lower than in the liquid. This has the advantage of reducing the temperature control requirements necessary to limit temperature induced frequency fluctuations in cryogenic microwave resonator-oscillators, (C) 2002 Published by Elsevier Science Ltd.

引用

页码：45 / 48

页数：4

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