• DocumentCode
    564386
  • Title

    Initial evaluation of the USNO rubidium fountain

  • Author

    Peil, S. ; Crane, S. ; Swanson, T. ; Ekstrom, C.R.

  • Author_Institution
    Clock Dev. Div., U.S. Naval Obs., Washington, DC, USA
  • fYear
    2006
  • fDate
    27-30 March 2006
  • Firstpage
    194
  • Lastpage
    196
  • Abstract
    We discuss the first rubidium atomic fountain at the U. S. Naval Observatory, NRF1, which has been built as a prototype for future devices to be included in the USNO timescale. The system has demonstrated a short-term Allan deviation of 1.35×1013/τ1/2 when measured against a hydrogen maser. We have directly compared NRF1´s performance to that of our cesium fountain, NCF, demonstrating integration as 1/τ1/2 below 1×10-15, and performance that is consistent with 7×10-16 at 11 hours.
  • Keywords
    atomic clocks; masers; rubidium; NRF1; Rb; U. S. Naval Observatory; USNO rubidium atomic fountain clock; cesium fountain clock; hydrogen maser; short-term Allan deviation; time 11 hour; Atomic clocks; Crystals; Frequency measurement; Hydrogen; Masers; Noise;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Frequency and Time Forum (EFTF), 2006 20th European
  • Conference_Location
    Braunschweig
  • Print_ISBN
    978-1-4673-2642-1
  • Type

    conf

  • Filename
    6230970
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=564386