• DocumentCode
    1296488
  • Title

    The Chinese 2e/h precision determination: China establishes its National Josephson Voltage Standard

  • Author

    Chieh, Kao ; Chao-Jun, Zhang ; Guo-Lin, Zhung ; De-Ming, Duan ; Guang-Cai, Zhang ; Yu-Qing, Zhou ; Wu, Li ; Jian-Guo, Qu

  • Author_Institution
    National Institute of Metrology, Dayi County, Sichuan, China
  • Issue
    2
  • fYear
    1987
  • fDate
    6/1/1987 12:00:00 AM
  • Firstpage
    262
  • Lastpage
    264
  • Abstract
    A measuring system for the precise determination 2e/h has been established recently and the National Voltage Standard using Josephson effect has been legally adopted in China. The total uncertainty of the measurement system is 3 × 10−8 with an accuracy of 1.1 × 10−7 for the value of 2e/h. The final experimental result is 2e/h = (483 593.846 ± 0.053) GHz/V83-NIM, referred to the volt as maintained by the National Institute of Metrology (NIM), Dayi County, Sichuan, China after January 1, 1983.
  • Keywords
    Current measurement; Junctions; Resistors; Standards; Temperature measurement; Uncertainty; Voltage measurement;
  • fLanguage
    English
  • Journal_Title
    Instrumentation and Measurement, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9456
  • Type

    jour

  • DOI
    10.1109/TIM.1987.6312682
  • Filename
    6312682
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1296488