Partner bands of 126Cs - first observation of chiral electromagnetic selection rules

被引：58

作者：

Grodner, E. ^{[1
]}

Sankowska, I. ^{[1
,7
]}

Morek, T. ^{[1
]}

Rohozinski, S. G. ^{[2
,3
]}

Droste, Ch. ^{[1
]}

Srebrny, J. ^{[3
]}

Pasternak, A. A. ^{[3
,4
]}

Kisielinski, M. ^{[3
,5
]}

Kowalczyk, M. ^{[1
,3
]}

Kownacki, J. ^{[3
,5
]}

Mierzejewski, J. ^{[1
,3
]}

Krol, A. ^{[6
]}

Wrzosek, K. ^{[1
,3
]}

机构：

[1] Univ Warsaw, Inst Expt Phys, Fac Phys, PL-00681 Warsaw, Poland

[2] Univ Warsaw, Inst Theoret Phys, Fac Phys, PL-00681 Warsaw, Poland

[3] Univ Warsaw, Heavy Ion Lab, PL-02093 Warsaw, Poland

[4] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[5] A Soltan Inst Nucl Studies, PL-05400 Otwock, Poland

[6] Univ Lodz, Div Nucl Phys, PL-90236 Lodz, Poland

[7] Inst Electr Mat Technol, PL-02668 Warsaw, Poland

来源：

PHYSICS LETTERS B | 2011年 / 703卷 / 01期

关键词：

126Cs; DSA; Lifetimes; B(M1); B(E2); Chiral symmetry; Chirality; Osiris II; LIFETIMES; SYMMETRY; NUCLEUS;

D O I：

10.1016/j.physletb.2011.07.062

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The lifetimes of the excited states belonging to the chiral partner bands built on the pi h(11/2) circle times nu h(11/2)(-1) configuration in Cs-126 have been measured using the DSA technique. For the first time the large set of the experimental transition probabilities is in qualitative agreement with all selection rules predicted for the strong chiral symmetry breaking limit. The selection rules originate from two general features of a chiral nucleus, namely, from the existence of well separated left- and right-handed systems built of three angular momentum vectors and extra symmetries appearing in addition to the chiral symmetry breaking. The B(M1) staggering resulting from these additional symmetries is sensitive to triaxiality of odd-odd nuclei as well as configuration of valence particles. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：46 / 50

页数：5

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