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DETERMINATION OF THE ATOMIC MASS CONSTANT BY ION ACCUMULATION

Christian Schlegel, Michael Gläser, Frank Schlolz, Gabriela Bethke, Michael Mecke
  • Abstract:
    An experiment for the direct measurement of the atomic mass constant was performed by accumulating ions from an ion beam up to a weighable mass. The aim of this experiment was to develop an alternative approach for the redefinition of the SI unit kilogram. In a recent experiment a mass of about 300 mg bismuth was accumulated and the atomic mass unit could be determined with a relative uncertainty better than 1.0 × 10-4.
  • Keywords:
    definition of SI-Unit Kilogram, mass accumulation, mass determination
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  • DOI:
    _unreg_wc-2009.049

Event details:

  • IMEKO TC:
  • Event name:
    XIX IMEKO World Congress
  • Title:

    Fundamental and Applied Metrology

  • Place:
    Lisbon, PORTUGAL
  • Time:
    06 September 2009 - 11 September 2009