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In this paper, a round robin test of residual resistance ratio (RRR) is performed for Nb3Sn composite superconductors prepared by an internal tin method by six institutes with the international standard test method described in IEC 61788-4. It was found that uncertainty mainly resulted from determination of the cryogenic resistance from the intersection of two straight lines drawn to fit the voltage versus temperature curve around the resistive transition. The measurement clarified that RRR can be measured with expanded uncertainty not larger than 5% with the coverage factor 2 by using this test method.
収録刊行物
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- IEEE Transactions on Applied Superconductivity
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IEEE Transactions on Applied Superconductivity 28 (2), 2017-12-07
IEEE
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詳細情報 詳細情報について
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- CRID
- 1050282813888679168
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- NII論文ID
- 120006469721
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- NII書誌ID
- AA10791666
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- ISSN
- 15582515
- 10518223
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- HANDLE
- 10228/00006766
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- CiNii Articles