https://doi.org/10.1140/epjad/i2005-06-005-5
ENAM 2004
Mass measurement of short-lived halo nuclides
1
CSNSM-IN2P3-CNRS, F-91405, Orsay-Campus, France
2
GSI, Planckstraße 1, 64291, Darmstadt, Germany
3
CERN, CH-1211, Geneva, Switzerland
* e-mail: bachelet@cern.ch
Received:
23
November
2004
Accepted:
18
February
2005
Published online:
12
April
2005
A direct mass measurement of the very-short-lived halo nuclide 11Li ( T 1/2 = 8.7ms) has been performed with the transmission mass spectrometer MISTRAL. The preliminary result for the two-neutron separation energy is S 2n = 376±5keV, improving the precision seven times with an increase of 20% compared to the previous value. In order to confirm this value, the mass excess of 11Be has also been measured, ME = 20171±4keV, in good agreement with the previous value.
PACS: 21.10.Dr Binding energies and masses – / 21.45.+v Few-body systems –
© Società Italiana di Fisica and Springer-Verlag, 2005