https://doi.org/10.1007/s100530170159
A new determination of the 4He and 3He masses in a Penning trap
1
Atomic Physics, Stockholm University, Frescativägen 24, 10405 Stockholm, Sweden
2
Manne Siegbahn Laboratory, Frescativägen 24, 10405 Stockholm, Sweden
Corresponding author: a fritioff@msi.se
Received:
23
October
2000
Revised:
6
February
2001
Published online: 15 August 2001
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.
PACS: 32.10.Bi – Atomic masses, mass spectra, abundances, and isotopes / 27.10.+h –
/ 21.10.Dr – Binding energies and masses
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001
