| Autor: |
Ressler, JJ, Piechaczek, A, Walters, WB, Aprahamian, A, Wiescher, M, Batchelder, JC, Bingham, CR, Brenner, DS, Ginter, TN, Gross, CJ, Grzywacz, R, Kulp, D, MacDonald, B, Reviol, W, Rikovska, J, Rykaczewski, K, Winger, JA, Zganjar, EF |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| DOI: |
10.1103/physrevlett.84.2104 |
| Popis: |
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 = 80 nuclides in astrophysical x-ray burst scenarios is reduced, and less extreme conditions are necessary for the production of heavier nuclides. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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