水銀，水，ガリウムの三重点温度の評価
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- 桜井 弘久
- 計量研究所
書誌事項
- タイトル別名
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- Thermal Analytical Estimation of the Triple Point Temperatures of Mercury, Water and Gallium.
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説明
The triple point temperatures of pure mercury, water and gallium are estimated by a thermal analytical method using mercury samples with nominal purities of 7N and 9N, gallium with 7N and water with 5N. The differences between the triple point temperatures realized by the pure samples and by the conventional triple point equipment are less than 0.1mK, which is estimated from the relation of melting temperature vs. the inverse of the fraction of melt. Concerning the triple point of water, the main source of the uncertainty is the ambiguity of the isotopic composition, rather than the error from impurities. The uncertainty of the unit of temperature, kelvin, is in the same situation. The definition of the unit by the gas constat has now a high potential to replace the present definition of the kelvin.
収録刊行物
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- 熱測定
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熱測定 19 (3), 113-118, 1992
日本熱測定学会
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詳細情報 詳細情報について
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- CRID
- 1390282680064168448
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- NII論文ID
- 130003446406
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- ISSN
- 18841899
- 03862615
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可