C Schlegel et al 2007 Metrologia 44 24 doi:10.1088/0026-1394/44/1/003
C Schlegel1, F Scholz, M Gläser, M Mecke and G Bethke
Show affiliationsAn experiment for the direct measurement of the atomic mass unit is under way by accumulating ions from an ion beam up to a weighable mass. In the first experiment, a mass of more than 38 mg of bismuth was accumulated, and the atomic mass unit was reproduced with a relative deviation of 9 × 10−4 from the CODATA value. Details of the experimental setup and accumulation process are presented.
37.20.+j Atomic and molecular beam sources and techniques
32.10.Bi Atomic masses, mass spectra, abundances, and isotopes
Issue 1 (February 2007)
Received 9 May 2006
Published 22 December 2006
C Schlegel et al 2007 Metrologia 44 24
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