A new determination of the 4 He and 3 He masses in a Penning trap |
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| Authors: | T. Fritioff C. Carlberg G. Douysset R. Schuch I. Bergström |
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| Affiliation: | Atomic Physics, Stockholm University, Frescativ?gen 24, 10405 Stockholm, Sweden, SE
Manne Siegbahn Laboratory, Frescativ?gen 24, 10405 Stockholm, Sweden, SE
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| Abstract: | The atomic and nuclear masses of 4He and 3He have been measured using doubly charged ions in a Penning trap connected to an electron beam ion source. Recent technical improvements allow mass determinations with uncertainties of a few parts in 1010. The obtained atomic masses are 4.002 603 256 8(13) u and 3.016 029 323 5(28) u respectively. These values deviate by as much as 5 standard deviations from the accepted values. Received 23 October 2000 and Received in final form 6 February 2001 |
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| Keywords: | PACS. 32.10.Bi Atomic masses, mass spectra, abundances, and isotopes – 27.10.+h A? 5– 21.10.Dr Binding energies and masses |
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