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Taprogge, J.*; Jungclaus, A.*; Grawe, H.*; 西村 俊二*; Doornenbal, P.*; Lorusso, G.*; Simpson, G. S.*; Sderstr
m, P.-A.*; 炭竃 聡之*; Xu, Z. Y.*; et al.
Physical Review C, 91(5), p.054324_1 - 054324_11, 2015/05
被引用回数:24 パーセンタイル:79.86(Physics, Nuclear)The decay of
Cd, produced in relativistic fission of a
U beam, was studied at the RIKEN Nishina Center. From the
-ray analysis, 31 excited states and 69
ray transitions were established in the level scheme of
In, and compared with state-of-the-art shell-model calculations. It was found that the
decay of
Cd is dominated by Gamow teller transitions, but a non-negligible contribution to the
decay is also made by first-forbidden transitions. To estimate the contribution of first-forbidden transitions is important for calculations of the
-decay half-lives of nuclei in this region.
Taprogge, J.*; Jungclaus, A.*; Grawe, H.*; 西村 俊二*; Xu, Z. Y.*; Doornenbal, P.*; Lorusso, G.*; Ncher, E.*; Simpson, G. S.*; S
derstr
m, P.-A.*; et al.
Physics Letters B, 738, p.223 - 227, 2014/11
被引用回数:23 パーセンタイル:78.26(Astronomy & Astrophysics)The decay of an isomeric state in the neutron-rich nucleus Cd was observed via the detection of internal conversion and Compton electrons. This measurement provided the first experimental information on excited states in this nucleus. The isomer was populated in the projectile fission of a
U beam at the RIBF facility at RIKEN. From the measured yields of
rays and internal conversion electrons, E3 multipolarity was tentatively assigned to the isomeric transition. A half-life of 3.6(2) ms was determined for this new state which, by comparison with shell-model calculations, was tentatively assigned a spin of (21/2
).
Taprogge, J.*; Jungclaus, A.*; Grawe, H.*; 西村 俊二*; Doornenbal, P.*; Lorusso, G.*; Simpson, G.*; Sderstr
m, P.-A.*; 炭竃 聡之*; Xu, Z. Y.*; et al.
Physical Review Letters, 112(13), p.132501_1 - 132501_6, 2014/04
被引用回数:54 パーセンタイル:88.05(Physics, Multidisciplinary)A low-lying state in In, the one-proton hole nucleus with respect to double magic
Sn, was observed by its
decay to the beta emitting isomer. The new state, which was populated both in the beta decay of
Cd and after beta-delayed neutron emission from
Cd, was identified, at an excitation energy of 1353 keV, as the previously unknown single-hole state with respect to the
Sn core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible
=82 isotones below
Sn. The results evidence a surprising absence of proton subshell closures along the chain of
=82 isotones. This finding bears consequences on the evolution of the
=82 shell gap along the r-process path.