1. Half-lives of ground and isomeric states in 97Cd and the astrophysical origin of 96Ru
- Author
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Lorusso, G., Becerril, A., Amthor, A., Baumann, T., Bazin, D., Berryman, J.S., Brown, B.A., Cyburt, R.H., Crawford, H.L., Estrade, A., Gade, A., Ginter, T., Guess, C.J., Hausmann, M., Hitt, G.W., Mantica, P.F., Matos, M., Meharchand, R., Minamisono, K., and Montes, F.
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NUCLEAR isomers , *HIGH spin physics , *ASTROPHYSICS , *PROTON capture , *X-ray bursts , *NUMERICAL calculations - Abstract
Abstract: First experimental evidence for a high-spin isomer () in 97Cd, a waiting point in the astrophysical rapid proton capture process, is presented. The data were obtained in β-decay studies at NSCL using the new RF Fragment Separator system and detecting β-delayed protons and β-delayed γ rays. Decays from ground and isomeric states were disentangled, and proton emission branches were determined for the first time. We find half-lives of 1.10(8) s and 3.8(2) s, and β-delayed proton emission branches of 12(2)% and 25(4)% were deduced for the ground and isomeric states, respectively. With these results, the nuclear data needed to determine an rp-process contribution to the unknown origin of solar 96Ru are in place. When the new data are included in astrophysical rp-process calculations, one finds that an rp-process origin of 96Ru is unlikely. [Copyright &y& Elsevier]
- Published
- 2011
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