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Phys. Rev. Lett. 102, 132501 (2009) [4 pages]

rp Process and Masses of NZ≈34 Nuclides

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J. Savory*, P. Schury, C. Bachelet, M. Block, G. Bollen, M. Facina, C. M. Folden, III, C. Guénaut, E. Kwan, A. A. Kwiatkowski, D. J. Morrissey, G. K. Pang, A. Prinke, R. Ringle, H. Schatz, S. Schwarz, and C. S. Sumithrarachchi
National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA

Received 10 October 2008; published 30 March 2009

High-precision Penning-trap mass measurements of the NZ≈34 nuclides 68Se, 70Se, 70mBr, and 71Br were performed, reaching experimental uncertainties of 0.5–15 keV. The new and improved mass data together with theoretical Coulomb displacement energies were used as input for rp process network calculations. An increase in the effective lifetime of the waiting point nucleus 68Se was found, and more precise information was obtained on the luminosity during a type I x-ray burst along with the final elemental abundances after the burst.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.132501
DOI:
10.1103/PhysRevLett.102.132501
PACS:
21.10.Dr, 26.30.−k, 27.50.+e

*savory@nscl.msu.edu