Phys.Rev.Lett. 106, 052502 (2011)

S.Nishimura, Z.Li, H.Watanabe, K.Yoshinaga, T.Sumikama, T.Tachibana, K.Yamaguchi, M.Kurata-Nishimura, G.Lorusso, Y.Miyashita, A.Odahara, H.Baba, J.S.Berryman, N.Blasi, A.Bracco, F.Camera, J.Chiba, P.Doornenbal, S.Go, T.Hashimoto, S.Hayakawa, C.Hinke, E.Ideguchi, T.Isobe, Y.Ito, D.G.Jenkins, Y.Kawada, N.Kobayashi, Y.Kondo, R.Krucken, S.Kubono, T.Nakano, H.Sakurai, H.Scheit, K.Steiger, D.Steppenbeck, K.Sugimoto, H.J.Ong, S.Ota, Zs.Podolyak, S.Takano, A.Takashima, K.Tajiri, T.Teranishi, Y.Wakabayashi, P.M.Walker, O.Wieland, H.Yamaguchi

β-Decay Half-Lives of Very Neutron-Rich Kr to Tc Isotopes on the Boundary of the r-Process Path: An Indication of Fast r-Matter Flow

RADIOACTIVITY ^97,98,99,100Kr(β^-), ^{97,98,99,100,101,102}Rb(β^-), ^{101,102,103,104,105}Sr, ^{103,104,105,106,107,108}Y(β^-), ^108,109,110Zr(β^-), ^111,112Nb(β^-), ^{112,113,114,115}Mo(β^-), ^116,117Tc(β^-) [from Be(²³⁸U, X), E=345 MeV/nucleon]; measured decay products, Ee, Ie; deduced T_1/2. Comparison with FRDM+QRPA, KTUY+GT2 model calculations, astrophysical r-process path.

doi: 10.1103/PhysRevLett.106.052502