TY - JOUR
T1 - Z dependence of the N=152 deformed shell gap
T2 - In-beam γ-ray spectroscopy of neutron-rich Pu245,246
AU - Makii, H.
AU - Ishii, T.
AU - Asai, M.
AU - Tsukada, K.
AU - Toyoshima, A.
AU - Matsuda, M.
AU - Makishima, A.
AU - Kaneko, J.
AU - Toume, H.
AU - Ichikawa, S.
AU - Shigematsu, S.
AU - Kohno, T.
AU - Ogawa, M.
PY - 2007/12/3
Y1 - 2007/12/3
N2 - We have measured in-beam γ rays in the neutron-rich 246Pu152 and 245Pu151 nuclei by means of Pu244(O18, O16)Pu246 and Pu244(O18, O17)Pu245 neutron transfer reactions, respectively. The γ rays emitted from Pu246 (Pu245) were identified by selecting the kinetic energy of scattered O16 (O17) detected by Si ΔE-E detectors. The ground-state band of Pu246 was established up to the 12+ state. We have found that the shell gap of N=152 is reduced in energy with decreasing atomic number by extending the systematics of the one-quasiparticle energies in N=151 nuclei into those in Pu245. This reduction of the shell gap clearly affects the 2+ energy of the ground-state band of Pu246.
AB - We have measured in-beam γ rays in the neutron-rich 246Pu152 and 245Pu151 nuclei by means of Pu244(O18, O16)Pu246 and Pu244(O18, O17)Pu245 neutron transfer reactions, respectively. The γ rays emitted from Pu246 (Pu245) were identified by selecting the kinetic energy of scattered O16 (O17) detected by Si ΔE-E detectors. The ground-state band of Pu246 was established up to the 12+ state. We have found that the shell gap of N=152 is reduced in energy with decreasing atomic number by extending the systematics of the one-quasiparticle energies in N=151 nuclei into those in Pu245. This reduction of the shell gap clearly affects the 2+ energy of the ground-state band of Pu246.
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U2 - 10.1103/PhysRevC.76.061301
DO - 10.1103/PhysRevC.76.061301
M3 - Article
AN - SCOPUS:36949029825
VL - 76
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 6
M1 - 061301
ER -