Change in structure between the I=1/2 states in Tl-181 and (177)(,)(179)AU

J. G. Cubiss; A. E. Barzakh; A. N. Andreyev; M. Al Monthery; N. Althubiti; B. Andel; S. Antalic; D. Atanasov; K. Blaum; T. E. Cocolios; T. Day Goodacre; R. P. de Groote; A. de Roubin; G. J. Farooq-Smith; D. V. Fedorov; V. N. Fedosseev; R. Ferrer; D. A. Fink; L. P. Gaffney; L. Ghys; A. Gredley; R. D. Harding; F. Herfurth; M. Huyse; N. Imai; D. T. Joss; U. Koster; S. Kreim; V. Liberati; D. Lunney; K. M. Lynch; V. Manea; B. A. Marsh; Y. Martinez Palenzuela; P. L. Molkanov; P. Mosat; D. Neidherr; G. G. O'Neill; R. D. Page; T. J. Procter; E. Rapisarda; M. Rosenbusch; S. Rothe; K. Sandhu; L. Schweikhard; M. D. Seliverstov; S. Sels; P. Spagnoletti; V. L. Truesdale; C. Van Beveren; P. Van Duppen; M. Veinhard; M. Venhart; M. Veselsky; F. Wearing; A. Welker; F. Wienholtz; R. N. Wolf; S. G. Zemlyanoy; K. Zuber

doi:10.1016/j.physletb.2018.10.005

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Change in structure between the I=1/2 states in Tl-181 and (177)(,)(179)AU

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Change in structure between the I=1/2 states in Tl-181 and (177)(,)(179)AU

J. G. Cubiss, A. E. Barzakh, A. N. Andreyev, M. Al Monthery, N. Althubiti, B. Andel, S. Antalic, D. Atanasov, K. Blaum, T. E. Cocolios, …

Physics letters. B, Vol.786, pp.355-363

10/11/2018

DOI: https://doi.org/10.1016/j.physletb.2018.10.005

Abstract

Astronomy & Astrophysics

Physical Sciences

Physics

Physics, Nuclear

Physics, Particles & Fields

Science & Technology

The first accurate measurements of the alpha-decay branching ratio and half-life of the I-pi = 1/2(+) ground state in Tl-181 have been made, along with the first determination of the magnetic moments and I = 1/2 spin assignments of the ground states in Au-177(,179). The results are discussed within the complementary systematics of the reduced alpha-decay widths and nuclear g factors of low-lying, I-pi = 1/2(+) states in the neutron-deficient lead region. The findings shed light on the unexpected hindrance of the 1/2(+) -> 1/2(+),Tl- 181(g) -> Au- 177(g) alpha decay, which is explained by a mixing of pi 3s(1/2) and pi 2d(3/2 )configurations in Au-177(g), whilst Tl-181(g) remains a near-pure pi 3s(1/2) . This conclusion is inferred from the g factor of Au-177(g) which has an intermediate value between those of pi 3s(1/2) and pi 2d(3/2) states. A similar mixed configuration is proposed for the I-pi = 1/2(+) ground state of Au-179. This mixing may provide evidence for triaxial shapes in the ground states in these nuclei. (C) 2018 The Authors. Published by Elsevier B.V.

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Title: Change in structure between the I=1/2 states in Tl-181 and (177)(,)(179)AU
Creators - without role: J. G. Cubiss - Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
A. E. Barzakh - Kurchatov Institute
A. N. Andreyev - Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
M. Al Monthery - Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
N. Althubiti
B. Andel - Comenius Univ, Dept Nucl Phys & Biophys, Bratislava 84248, Slovakia
S. Antalic - Comenius Univ, Dept Nucl Phys & Biophys, Bratislava 84248, Slovakia
D. Atanasov - Heidelberg
K. Blaum - Heidelberg
T. E. Cocolios - CERN, CH-1211 Geneva 23, Switzerland
T. Day Goodacre - CERN, CH-1211 Geneva 23, Switzerland
R. P. de Groote - KU Leuven
A. de Roubin - Heidelberg
G. J. Farooq-Smith - University of Manchester
D. V. Fedorov - Kurchatov Institute
V. N. Fedosseev - CERN, CH-1211 Geneva 23, Switzerland
R. Ferrer - KU Leuven
D. A. Fink - CERN, CH-1211 Geneva 23, Switzerland
L. P. Gaffney - KU Leuven
L. Ghys - KU Leuven
A. Gredley - University of Liverpool
R. D. Harding - Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
F. Herfurth - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
M. Huyse - KU Leuven
N. Imai - High Energy Accelerator Org, KEK, Oho 1-1, Tsukuba, Ibaraki 3050801, Japan
D. T. Joss - University of Liverpool
U. Koster - Inst Laue Langevin, 6 Rue Jules Horowitz, F-38042 Grenoble 9, France
S. Kreim - CERN, CH-1211 Geneva 23, Switzerland
V. Liberati - Supreme Council Of Health
D. Lunney - University of Paris-Sud
K. M. Lynch - CERN, CH-1211 Geneva 23, Switzerland
V. Manea - CERN, CH-1211 Geneva 23, Switzerland
B. A. Marsh - CERN, CH-1211 Geneva 23, Switzerland
Y. Martinez Palenzuela - KU Leuven
P. L. Molkanov - Kurchatov Institute
P. Mosat - Comenius Univ, Dept Nucl Phys & Biophys, Bratislava 84248, Slovakia
D. Neidherr - GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
G. G. O'Neill - University of Liverpool
R. D. Page - University of Liverpool
T. J. Procter - CERN, CH-1211 Geneva 23, Switzerland
E. Rapisarda - CERN, CH-1211 Geneva 23, Switzerland
M. Rosenbusch - University of Greifswald
S. Rothe - CERN, CH-1211 Geneva 23, Switzerland
K. Sandhu - Supreme Council Of Health
L. Schweikhard - University of Greifswald
M. D. Seliverstov - Kurchatov Institute
S. Sels - KU Leuven
P. Spagnoletti - Supreme Council Of Health
V. L. Truesdale - Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England
C. Van Beveren - KU Leuven
P. Van Duppen - KU Leuven
M. Veinhard - CERN, CH-1211 Geneva 23, Switzerland
M. Venhart - Slovak Acad Sci, Inst Phys, Bratislava 84511, Slovakia
M. Veselsky - Slovak Acad Sci, Inst Phys, Bratislava 84511, Slovakia
F. Wearing - University of Liverpool
A. Welker - CERN, CH-1211 Geneva 23, Switzerland
F. Wienholtz - CERN, CH-1211 Geneva 23, Switzerland
R. N. Wolf - Heidelberg
S. G. Zemlyanoy - Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
K. Zuber - Tech Univ Dresden, D-01069 Dresden, Germany
Publication Details: Physics letters. B, Vol.786, pp.355-363
Publisher: Elsevier
Number of pages: 9
Grant note: FWO-Vlaanderen (Belgium); FWO APVV-15-0225 / Slovak Research and Development Agency ST/P004598/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) EP/D075769/1 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) 654002 / European Union; European Commission U.K. Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) 262010; 267194; 289191 / European Union's Seventh Framework Programme for Research and Technological Development 2/0129/17; 1/0532/17 / Slovak Grant Agency VEGA; Vedecka grantova agentura MSVVaS SR a SAV (VEGA) GOA/2010/010 / BOF KU Leuven; KU Leuven P7/12 / Interuniversity Attraction Poles Programme; Belgian Federal Science Policy Office
Identifiers: 9913101508331
Academic Unit: Al Jouf University
Language: English
Resource Type: Journal article