Nuclear isovector valence-shell excitation of 202Hg

被引：7

作者：

Kern, R. ^{[1
]}

Stegmann, R. ^{[1
]}

Pietralla, N. ^{[1
]}

Rainovski, G. ^{[2
]}

Carpenter, M. P. ^{[3
]}

Janssens, R. V. F. ^{[4
,5
]}

Lettmann, M. ^{[1
]}

Moeller, O. ^{[1
]}

Moeller, T. ^{[1
]}

Stahl, C. ^{[1
]}

Werner, V ^{[1
]}

Zhu, S. ^{[3
]}

机构：

[1] Tech Univ Darmstadt, Inst Kernphys, D-64283 Darmstadt, Germany

[2] Univ Sofia St Kliment Ohridski, Fac Phys, Sofia 1164, Bulgaria

[3] Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA

[4] Univ North Carolina Chapel Hill, Dept Phys & Astron, Chapel Hill, NC 27559 USA

[5] Duke Univ, Triangle Univ Nucl Lab, Dunham, NC 27708 USA

来源：

PHYSICAL REVIEW C | 2019年 / 99卷 / 01期

关键词：

NEUTRON MIXED-SYMMETRY; QUADRUPOLE PHONON; PROTON; STATES; SCATTERING; DECAY; EVOLUTION; HG-202; MODES;

D O I：

10.1103/PhysRevC.99.011303

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：

Excited states of Hg-202 have been studied via the C-12 (Hg-202, Hg-202*) Coulomb excitation reaction at a beam energy of 890 MeV. The gamma-ray transitions from the excited states of Hg-202 were detected by the Gammasphere array. The intensities of the observed gamma rays determined the relative populations of the excited states which were used to extract the absolute M1 and E2 transition strength distributions for excited 2(+) states of Hg-202 up to 2 MeV. The measured absolute B(M1; 2(7)(+) -> 2(1)(+)) strength of 0.18(8)mu(2)(N) indicates that the 2(7)(+) level of Hg-202 is the main fragment of the proton-neutron mixed-symmetry 2(1,ms)(+) state. Upper limits for the F-spin mixing matrix elements of Hg-202,(204) are determined as well.

引用

页数：6

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