Lifetime measurements in 80Br and a new region for observation of chiral electromagnetic selection rules

Level lifetimes for the candidate chiral doublet bands of 80Br were extracted by means of the Doppler-shift attenuation method. The absolute transition probabilities derived from the lifetimes agree well with the M1 and E2 chiral electromagnetic selection rules, and are well reproduced by the triaxi...

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Main Authors: R.J. Guo, S.Y. Wang, R. Schwengner, W.Z. Xu, B. Qi, C. Liu, A. Rohilla, F. Dönau, T. Servene, H. Schnare, J. Reif, G. Winter, L. Käubler, H. Prade, S. Skoda, J. Eberth, H.G. Thomas, F. Becker, B. Fiedler, S. Freund, S. Kasemann, T. Steinhardt, O. Thelen, T. Härtlein, C. Ender, F. Köck, P. Reiter, D. Schwalm
Format: Article
Language:English
Published: Elsevier 2022-10-01
Series:Physics Letters B
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269322004786
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author R.J. Guo
S.Y. Wang
R. Schwengner
W.Z. Xu
B. Qi
C. Liu
A. Rohilla
F. Dönau
T. Servene
H. Schnare
J. Reif
G. Winter
L. Käubler
H. Prade
S. Skoda
J. Eberth
H.G. Thomas
F. Becker
B. Fiedler
S. Freund
S. Kasemann
T. Steinhardt
O. Thelen
T. Härtlein
C. Ender
F. Köck
P. Reiter
D. Schwalm
author_facet R.J. Guo
S.Y. Wang
R. Schwengner
W.Z. Xu
B. Qi
C. Liu
A. Rohilla
F. Dönau
T. Servene
H. Schnare
J. Reif
G. Winter
L. Käubler
H. Prade
S. Skoda
J. Eberth
H.G. Thomas
F. Becker
B. Fiedler
S. Freund
S. Kasemann
T. Steinhardt
O. Thelen
T. Härtlein
C. Ender
F. Köck
P. Reiter
D. Schwalm
author_sort R.J. Guo
collection DOAJ
description Level lifetimes for the candidate chiral doublet bands of 80Br were extracted by means of the Doppler-shift attenuation method. The absolute transition probabilities derived from the lifetimes agree well with the M1 and E2 chiral electromagnetic selection rules, and are well reproduced by the triaxial particle rotor model calculations. Such good agreements among the experimental data, selection rules of chiral doublet bands and theoretical calculations are rare and outstanding in researches of nuclear chirality. Besides odd-odd Cs isotopes, odd-odd Br isotopes in the A≈ 80 mass region represent another territory that exhibits the ideal selection rules expected for chiral doublet bands.
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spelling doaj.art-c2f5de7f15da45a5a9375898f46473bc2022-12-22T01:49:52ZengElsevierPhysics Letters B0370-26932022-10-01833137344Lifetime measurements in 80Br and a new region for observation of chiral electromagnetic selection rulesR.J. Guo0S.Y. Wang1R. Schwengner2W.Z. Xu3B. Qi4C. Liu5A. Rohilla6F. Dönau7T. Servene8H. Schnare9J. Reif10G. Winter11L. Käubler12H. Prade13S. Skoda14J. Eberth15H.G. Thomas16F. Becker17B. Fiedler18S. Freund19S. Kasemann20T. Steinhardt21O. Thelen22T. Härtlein23C. Ender24F. Köck25P. Reiter26D. Schwalm27Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of ChinaShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of China; Corresponding author.Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, GermanyShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of ChinaShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of ChinaShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of ChinaShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, People's Republic of ChinaHelmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, GermanyContinental AG, Babenhausen, GermanyGLOBALFOUNDRIES, 01109 Dresden, GermanySopra Steria SE, Hamburg, GermanyHelmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, GermanyHelmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, GermanyHelmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, GermanyInstitut für Kernphysik, Universität zu Köln, 50937 Köln, GermanyInstitut für Kernphysik, Universität zu Köln, 50937 Köln, Germanyctt, 56410 Montabaur, GermanyKIT, 76021 Karlsruhe, GermanyInstitut für Kernphysik, Universität zu Köln, 50937 Köln, GermanyInstitut für Kernphysik, Universität zu Köln, 50937 Köln, GermanyFH Vorarlberg, 6850 Dornbirn, AustriaJEN, 52428 Jülich, GermanyQMONK, 26629 Großefehn, GermanySAP, Walldorf, GermanyMax-Planck-Institut für Kernphysik, 69117 Heidelberg, GermanyMax-Planck-Institut für Kernphysik, 69117 Heidelberg, GermanyInstitut für Kernphysik, Universität zu Köln, 50937 Köln, GermanyMax-Planck-Institut für Kernphysik, 69117 Heidelberg, GermanyLevel lifetimes for the candidate chiral doublet bands of 80Br were extracted by means of the Doppler-shift attenuation method. The absolute transition probabilities derived from the lifetimes agree well with the M1 and E2 chiral electromagnetic selection rules, and are well reproduced by the triaxial particle rotor model calculations. Such good agreements among the experimental data, selection rules of chiral doublet bands and theoretical calculations are rare and outstanding in researches of nuclear chirality. Besides odd-odd Cs isotopes, odd-odd Br isotopes in the A≈ 80 mass region represent another territory that exhibits the ideal selection rules expected for chiral doublet bands.http://www.sciencedirect.com/science/article/pii/S0370269322004786Lifetime measurementChiral doublet bandsParticle rotor modelTransition probability
spellingShingle R.J. Guo
S.Y. Wang
R. Schwengner
W.Z. Xu
B. Qi
C. Liu
A. Rohilla
F. Dönau
T. Servene
H. Schnare
J. Reif
G. Winter
L. Käubler
H. Prade
S. Skoda
J. Eberth
H.G. Thomas
F. Becker
B. Fiedler
S. Freund
S. Kasemann
T. Steinhardt
O. Thelen
T. Härtlein
C. Ender
F. Köck
P. Reiter
D. Schwalm
Lifetime measurements in 80Br and a new region for observation of chiral electromagnetic selection rules
Physics Letters B
Lifetime measurement
Chiral doublet bands
Particle rotor model
Transition probability
title Lifetime measurements in 80Br and a new region for observation of chiral electromagnetic selection rules
title_full Lifetime measurements in 80Br and a new region for observation of chiral electromagnetic selection rules
title_fullStr Lifetime measurements in 80Br and a new region for observation of chiral electromagnetic selection rules
title_full_unstemmed Lifetime measurements in 80Br and a new region for observation of chiral electromagnetic selection rules
title_short Lifetime measurements in 80Br and a new region for observation of chiral electromagnetic selection rules
title_sort lifetime measurements in 80br and a new region for observation of chiral electromagnetic selection rules
topic Lifetime measurement
Chiral doublet bands
Particle rotor model
Transition probability
url http://www.sciencedirect.com/science/article/pii/S0370269322004786
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