Evolution of quadrupole collectivity in N=80 isotones toward the Z=64 subshell gap: The B(E2; 21+ → 01+) value of 142Sm

被引：8

作者：

Stegmann, R. ^{[1
]}

Bauer, C. ^{[1
]}

Rainovski, G. ^{[2
]}

Pietralla, N. ^{[1
]}

Stahl, C. ^{[1
]}

Boenig, S. ^{[1
]}

Ilieva, S. ^{[1
]}

Blazhev, A. ^{[3
]}

Damyanova, A. ^{[2
,4
]}

Danchev, M. ^{[2
]}

Gladnishki, K. ^{[2
]}

Jolie, J.

Lutter, R. ^{[5
]}

Pakarinen, J. ^{[6
,7
]}

Radeck, D. ^{[3
]}

Rapisarda, E. ^{[6
,8
]}

Reiter, P. ^{[3
]}

Scheck, M. ^{[9
,10
]}

Siebeck, B. ^{[3
]}

Stora, T. ^{[6
]}

Thoele, P. ^{[3
]}

Thomas, T. ^{[3
]}

Thurauf, M. ^{[1
]}

Vermeulen, M. J. ^{[11
]}

Voulot, D. ^{[6
]}

Warr, N. ^{[3
]}

Wenander, F. ^{[6
]}

Werner, V. ^{[1
,12
]}

De Witte, H. ^{[8
]}

机构：

[1] Tech Univ Darmstadt, Inst Kernphys, Darmstadt, Germany

[2] Univ Sofia, BG-1126 Sofia, Bulgaria

[3] Univ Cologne, Inst Kernphys, D-50931 Cologne, Germany

[4] Univ Geneva, Geneva, Switzerland

[5] Univ Munich, Fak Phys, Garching, Germany

[6] CERN, Geneva, Switzerland

[7] Univ Jyvaskyla, Jyvaskyla, Finland

[8] Katholieke Univ Leuven, Inst Kern Stralingsfys, Leuven, Belgium

[9] Univ West Scotland, Sch Engn, Paisley PA1 2BE, Renfrew, Scotland

[10] Scottish Univ Phys Alliance, Glasgow G12 8QQ, Lanark, Scotland

[11] Univ York, Nucl Phys Grp, York YO10 5DD, N Yorkshire, England

[12] Yale Univ, WNSL, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW C | 2015年 / 91卷 / 05期

关键词：

1ST; 2; BA-136; BEAMS; STATE;

D O I：

10.1103/PhysRevC.91.054326

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

It was shown that the evolution of the B(E2; 2(1)(+) -> 0(1)(+)) values in N = 80 isotones from Te to Nd is affected by the underlying subshell structure. This manifests itself in the observation of the local suppression of the B(E2) value at Z = 58 with respect to the neighboring nuclei Ba-136 and Nd-140. To investigate this shell sensitivity toward the Z = 64 subshell gap, the B(E2; 2(1)(+) -> 0(1)(+))) value of the unstable nucleus Sm-142 was measured utilizing the projectile Coulomb excitation technique. The radioactive ion beam (RIB) experiment was performed at the REX-ISOLDE facility at CERN. The B(E2) value of 32 (4) W.u. reflects the impact of the pi(1g(7/2) 2d(5/2)) subshell closure at Z = 64 with respect to a linear scaling of collectivity with valence proton number.

引用

页数：5

共 8 条

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