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Half-Life Measurement for the r p-Process Waiting Point Nuclide 80Zr

Abstract:

X-ray bursts have been suggested as a possible site for the astrophysical rp-process. The time scale for the process is governed by β-decay half-lives of several even-even N = Z waiting point nuclei, in particular, N = Z = 40 80Zr. A 4.1(+0.8-0.6)-s β+/EC half-life for 80Zr was determined by observing delayed 84-keV γ rays depopulating a T1/2 = 4-μs isomer at 312 keV in the daughter 80Y. As this half-life is lower than many previously predicted values, the calculated excessive production of A...

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Publisher copy:
10.1103/PhysRevLett.84.2104

Authors


Ressler, JJ More by this author
Piechaczek, A More by this author
Walters, WB More by this author
Aprahamian, A More by this author
Wiescher, M More by this author
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Journal:
Physical Review Letters
Volume:
84
Issue:
10
Pages:
2104-2107
Publication date:
2000-03-06
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:813ee9b2-2a48-4022-8d58-d22761d7a877
Source identifiers:
369317
Local pid:
pubs:369317
Language:
English

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