• DocumentCode
    767438
  • Title

    Measuring the fine structure constant using helium fine structure

  • Author

    Shiner, David L. ; Dixson, Ronald

  • Author_Institution
    Dept. of Phys., Yale Univ., New Haven, CT, USA
  • Volume
    44
  • Issue
    2
  • fYear
    1995
  • fDate
    4/1/1995 12:00:00 AM
  • Firstpage
    518
  • Lastpage
    521
  • Abstract
    The fine structure of the 23S-23P transition in helium has been precisely measured using laser excitation of an atomic beam. The results give α-1=137.035 853 (3) (7) (99). The three values of standard deviation are from the uncertainty in the measured atomic frequency interval, the total experimental error (including the frequency calibration), and helium theory (1978 value), respectively
  • Keywords
    atomic beams; constants; excited states; fine structure; frequency measurement; helium; measurement errors; 23S-23P transition; He; He fine structure; atomic beam; atomic frequency interval; experimental error; frequency calibration; laser excitation; measurement standards; standard deviation; Atom lasers; Atomic beams; Atomic measurements; Frequency measurement; Helium; Laser excitation; Laser theory; Laser transitions; Measurement standards; Measurement uncertainty;
  • fLanguage
    English
  • Journal_Title
    Instrumentation and Measurement, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9456
  • Type

    jour

  • DOI
    10.1109/19.377896
  • Filename
    377896
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=767438