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Phys. Rev. C 75, 032801(R) (2007) [5 pages]

Precise measurement of the 64Ge mass and its effect on the rp process

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J. A. Clark1,2,3, K. S. Sharma2, G. Savard3,4, A. F. Levand3, J. C. Wang2,3, Z. Zhou3, B. Blank3,5, F. Buchinger6, J. E. Crawford6, S. Gulick6, J. K. P. Lee6, D. Seweryniak3, and W. Trimble3
1Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520, USA
2Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
3Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
4Department of Physics, University of Chicago, Chicago, Illinois 60637, USA
5Centre d'Etudes Nucléaires de Bordeaux-Gradignan, F-33175 Gradignan Cedex, France
6Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada

Received 29 April 2006; published 21 March 2007

The Canadian Penning Trap mass spectrometer has been used to determine the mass excesses of 64Ge and 64Ga as −54344(30) keV and −58832.5(39) keV, respectively. Under typical conditions used for modeling x-ray bursts, 64Ge is confirmed as a waiting-point nuclide and can contribute up to 35.5 s to the timescale of the rp process at a peak x-ray burst temperature of 1.5 GK.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.75.032801
DOI:
10.1103/PhysRevC.75.032801
PACS:
26.30.+k, 21.10.Dr, 27.50.+e, 98.80.Ft
 
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