Precise Mass Measurement of 68Se, a Waiting-Point Nuclide along the rp Process

Details Precise Mass Measurement of 68Se, a Waiting-Point Nuclide along the rp Process Precise Mass Measurement of 68Se, a Waiting-Point Nuclide along the rp Process

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvl..92s2501c&link_type=abstract

Physical Review Letters, vol. 92, Issue 19, id. 192501

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36

Binding Energies And Masses, Nucleosynthesis In Novae, Supernovae, And Other Explosive Environments, 59<=A<=89, Origin, Formation, And Abundances Of The Elements

Scientific paper

Mass measurements of 68Ge, 68As, and 68Se have been obtained with the Canadian Penning Trap mass spectrometer. The results determine the mass excess of 68Se as -54 232(19) keV, the first measurement with a precision and reliability sufficient to address the light-curve and energy output of x-ray bursts as well as the abundances of the elements synthesized. Under typical conditions used for modeling x-ray bursts, 68Se is found to cause a significant delay in the rp process nucleosynthesis.

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