$\beta$-Decay Half-Lives of 55 Neutron-Rich Isotopes beyond the N=82 Shell Gap
- Wu, J.
- Nishimura, S.
- Möller, P.
- Mumpower, M.R.
- Lozeva, R.
- Moon, C.B.
- Odahara, A.
- Baba, H.
- Browne, F.
- Daido, R.
- Doornenbal, P.
- Fang, Y.F.
- Haroon, M.
- Isobe, T.
- Jung, H.S.
- Lorusso, G.
- Moon, B.
- Patel, Z.
- Rice, S.
- Sakurai, H.
- Shimizu, Y.
- Sinclair, L.
- Söderström, P.-A.
- Sumikama, T.
- Watanabe, H.
- Xu, Z.Y.
- Yagi, A.
- Yokoyama, R.
- Ahn, D.S.
- Garrote, F.L. Bello
- Daugas, J.M.
- Didierjean, F.
- Fukuda, N.
- Inabe, N.
- Ishigaki, T.
- Kameda, D.
- Kojouharov, I.
- Komatsubara, T.
- Kubo, T.
- Kurz, N.
- Kwon, K.Y.
- Morimoto, S.
- Murai, D.
- Nishibata, H.
- Schaffner, H.
- Sprouse, T.M.
- Suzuki, H.
- Takeda, H.
- Tanaka, M.
- Tshoo, K.
- Wakabayashi, Y.
DOIAbstract
International audienceThe $\beta$-decay half-lives of 55 neutron-rich nuclei $^{134-139}$Sn, $^{134-142}$Sb, $^{137-144}$Te, $^{140-146}$I, $^{142-148}$Xe, $^{145-151}$Cs, $^{148-153}$Ba, $^{151-155}$La were measured at the Radioactive Isotope Beam Factory (RIBF) employing the projectile fission fragments of $^{238}$U. The nuclear level structure, which relates to deformation, has a large effect on the half-lives. The impact of newly-measured half-lives on modeling the astrophysical origin of the heavy elements is studied in the context of $r$ process nucleosynthesis. For a wide variety of astrophysical conditions, including those in which fission recycling occurs, the half-lives have an important local impact on the second ($A$ $\approx$ 1...
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