Precise mass measurement of 68Se, a waiting-point nuclide along the rp process |
| |
| Authors: | Clark J A Savard G Sharma K S Vaz J Wang J C Zhou Z Heinz A Blank B Buchinger F Crawford J E Gulick S Lee J K P Levand A F Seweryniak D Sprouse G D Trimble W |
| |
| Institution: | Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada. |
| |
| Abstract: | 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. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
