• DocumentCode
    2593721
  • Title

    Progress of the fountain frequency standard at NMIJ in 2008

  • Author

    Yanagimachi, S. ; Takamizawa, A. ; Watabe, K. ; Hagimoto, K. ; Ikegami, T.

  • Author_Institution
    Time & Freq. Div., AIST, Tsukuba, Japan
  • fYear
    2009
  • fDate
    20-24 April 2009
  • Firstpage
    1023
  • Lastpage
    1025
  • Abstract
    National Metrology Institute of Japan (NMIJ) is developing two fountain frequency standards (NMIJ-F1, NMIJ-F2). NMIJ-F1 is in the phase of operation for continuous monthly report since February in 2008. The possibility of the reduction in the uncertainty caused by the collisional shift that mainly limits the total uncertainty of NMIJ-F1 is presented. The construction of NMIJ-F2 proceeded, and then the launched atomic signal was observed.
  • Keywords
    frequency standards; fountain frequency standard; Atomic measurements; Frequency conversion; Frequency estimation; Frequency measurement; Hydrogen; Masers; Metrology; Stability; Standards development; Uncertainty;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Frequency Control Symposium, 2009 Joint with the 22nd European Frequency and Time forum. IEEE International
  • Conference_Location
    Besancon
  • ISSN
    1075-6787
  • Print_ISBN
    978-1-4244-3511-1
  • Electronic_ISBN
    1075-6787
  • Type

    conf

  • DOI
    10.1109/FREQ.2009.5168348
  • Filename
    5168348
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2593721