Study of standard thermometers and their reproduction of the l point in liquid helium

Study of standard thermometers and their reproduction of the l point in liquid helium

Self-calibrated resistance thermometers to be used as standards have been investigated. The heat exchange of the sensor coil with liquid helium per unit coil surface area at 0.3 K is 12 times better than that of a conventional gas-filled thermometer. The exchange is due to Kapitza surface thermal re...

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Veröffentlicht in:Measurement techniques 1999-07, Vol.42 (7), p.689-692
Hauptverfasser: Astrov, D N, Korostin, S V
Format: Artikel
Sprache:eng
Schlagworte:
Coiling
Heat exchange
Liquid helium
Reproduction
Resistance thermometers
Surface area
Thermometers
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container_title Measurement techniques
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creator Astrov, D N
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description Self-calibrated resistance thermometers to be used as standards have been investigated. The heat exchange of the sensor coil with liquid helium per unit coil surface area at 0.3 K is 12 times better than that of a conventional gas-filled thermometer. The exchange is due to Kapitza surface thermal resistance. The l point in liquid helium filling of the thermometer is reproducible to within 0.1 mK.
doi_str_mv 10.1007/BF02512093
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identifier ISSN: 0543-1972
ispartof Measurement techniques, 1999-07, Vol.42 (7), p.689-692
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1573-8906
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source SpringerLink Journals - AutoHoldings
subjects Coiling
Heat exchange
Liquid helium
Reproduction
Resistance thermometers
Surface area
Thermometers
title Study of standard thermometers and their reproduction of the l point in liquid helium
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