Shell Evolution and E2 Collectivity: New Spectroscopic Information

被引：2

作者：

Pietralla, N. ^{[1
]}

Kremer, C. ^{[1
]}

Beck, T. ^{[1
]}

Witt, W. ^{[1
]}

Gayer, U. ^{[1
]}

von Neumann-Cosel, P. ^{[1
]}

Werner, V. ^{[1
]}

机构：

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

来源：

16TH INTERNATIONAL SYMPOSIUM ON CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS (CGS16) | 2018年 / 178卷

关键词：

NUCLEAR-DATA SHEETS;

D O I：

10.1051/epjconf/201817802007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

New spectroscopic information on electric quadrupole collectivity has recently been obtained. We report on our identification of a coexisting deformed structure in the quasi-doubly closed-shell nucleus Zr-96 from our measurement of a corresponding absolute E2 intraband transition strength in electron scattering reactions and its small mixing matrix element with the spherical ground state structure. The even-mass zirconium isotopes exhibit a first order quantum shape phase transition between neutron numbers 58 and 60. We have used photon scattering reactions for a first measurement of the E2 decay strength of the nuclear 1(+) scissors mode. Evidence for its 2(+) rotational excitation and its extraordinarily large rotational moment of inertia are presented.

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页数：5

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