Hindered Gamow-Teller Decay to the Odd-Odd N = Z Ga-62: Absence of Proton-Neutron T=0 Condensate in A=62

E. Grodner; A. Gadea; P. Sarriguren; S. M. Lenzi; J. Grebosz; J. J. Valiente-Dobon; A. Algora; M. Gorska; P. H. Regan; D. Rudolph; G. de Angelis; J. Agramunt; N. Alkhomashi; L. Amon Susam; D. Bazzacco; J. Benlliure; G. Benzoni; P. Boutachkov; A. Bracco; L. Caceres; R. B. Cakirli; F. C. L. Crespi; C. Domingo-Pardo; M. Doncel; Zs Dombradi; P. Doornenbal; E. Farnea; E. Ganioglu; W. Gelletly; J. Gerl; A. Gottardo; T. Hueyuek; N. Kurz; S. Leoni; D. Mengoni; F. Molina; A. I. Morales; R. Orlandi; Y. Oktem; R. D. Page; D. Perez; S. Pietri; Zs Podolyak; A. Poves; B. Quintana; S. Rinta-Antila; B. Rubio; B. S. Nara Singh; A. N. Steer; S. Verma; R. Wadsworth; O. Wieland; H. J. Wollersheim

doi:10.1103/PhysRevLett.113.092501

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Hindered Gamow-Teller Decay to the Odd-Odd N = Z Ga-62: Absence of Proton-Neutron T=0 Condensate in A=62

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Hindered Gamow-Teller Decay to the Odd-Odd N = Z Ga-62: Absence of Proton-Neutron T=0 Condensate in A=62

E. Grodner, A. Gadea, P. Sarriguren, S. M. Lenzi, J. Grebosz, J. J. Valiente-Dobon, A. Algora, M. Gorska, P. H. Regan, D. Rudolph, …

Physical review letters, Vol.113(9)

28/08/2014

DOI: https://doi.org/10.1103/PhysRevLett.113.092501

PMID: 25215980

Abstract

Physical Sciences

Physics

Physics, Multidisciplinary

Science & Technology

Search for a new kind of superfluidity built on collective proton-neutron pairs with aligned spin is performed studying the Gamow-Teller decay of the T = 1, J(pi) = 0(+) ground state of Ge-62 into excited states of the odd-odd N = Z nucleus Ga-62. The experiment is performed at GSI Helmholtzzentrum fur Shwerionenforshung with the Ge-62 ions selected by the fragment separator and implanted in a stack of Si-strip detectors, surrounded by the RISING Ge array. A half-life of T-1/2 = 2 82.9(14) ms is measured for the Ge-62 ground state. Six excited states of Ga-62, populated below 2.5 MeV through Gamow-Teller transitions, are identified. Individual Gamow-Teller transition strengths agree well with theoretical predictions of the interacting shell model and the quasiparticle random phase approximation. The absence of any sizable low-lying Gamow-Teller strength in the reported beta-decay experiment supports the hypothesis of a negligible role of coherent T = 0 proton-neutron correlations in Ga-62.

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Title: Hindered Gamow-Teller Decay to the Odd-Odd N = Z Ga-62: Absence of Proton-Neutron T=0 Condensate in A=62
Creators - without role: E. Grodner - University of Warsaw
A. Gadea - Universitat de València
P. Sarriguren - Consejo Superior de Investigaciones Científicas
S. M. Lenzi - University of Padua
J. Grebosz - Polish Academy of Sciences
J. J. Valiente-Dobon - Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy
A. Algora - Hungarian Academy of Sciences
M. Gorska - GSI Helmholtz Centre for Heavy Ion Research
P. H. Regan - University of Surrey
D. Rudolph - Lund University
G. de Angelis - Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy
J. Agramunt - Universitat de València
N. Alkhomashi - University of Surrey
L. Amon Susam - Istanbul University
D. Bazzacco - Ist Nazl Fis Nucl, Sez Padova, Padua, Italy
J. Benlliure - Universidade de Santiago de Compostela
G. Benzoni - Mylan
P. Boutachkov - GSI Helmholtz Centre for Heavy Ion Research
A. Bracco - University of Milan
L. Caceres - GSI Helmholtz Centre for Heavy Ion Research
R. B. Cakirli - Istanbul University
F. C. L. Crespi - Mylan
C. Domingo-Pardo - Universitat de València
M. Doncel - Universidad de Salamanca
Zs Dombradi - Hungarian Academy of Sciences
P. Doornenbal - GSI Helmholtz Centre for Heavy Ion Research
E. Farnea - Ist Nazl Fis Nucl, Sez Padova, Padua, Italy
E. Ganioglu - Istanbul University
W. Gelletly - University of Surrey
J. Gerl - GSI Helmholtz Centre for Heavy Ion Research
A. Gottardo - Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy
T. Hueyuek - Universitat de València
N. Kurz - GSI Helmholtz Centre for Heavy Ion Research
S. Leoni - University of Milan
D. Mengoni - University of Padua
F. Molina - Universitat de València
A. I. Morales - University of Milan
R. Orlandi - Consejo Superior de Investigaciones Científicas
Y. Oktem - Istanbul University
R. D. Page - University of Liverpool
D. Perez - Universidade de Santiago de Compostela
S. Pietri - GSI Helmholtz Centre for Heavy Ion Research
Zs Podolyak - University of Surrey
A. Poves - Autonomous University of Madrid
B. Quintana - Universidad de Salamanca
S. Rinta-Antila - University of Liverpool
B. Rubio - Universitat de València
B. S. Nara Singh - Univ York, Dept Phys, Nucl Phys Grp, York YO10 5DD, N Yorkshire, England
A. N. Steer - University of York
S. Verma - Universidade de Santiago de Compostela
R. Wadsworth - University of York
O. Wieland - Mylan
H. J. Wollersheim - GSI Helmholtz Centre for Heavy Ion Research
Publication Details: Physical review letters, Vol.113(9)
Publisher: Amer Physical Soc
Number of pages: 5
Grant note: EP/E004385/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) PROMETEO/2010/101 / Generalitat Valenciana, Spain; Generalitat Valenciana K100835 / OTKA; Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) ST/J000124/1 / Science and Technology Facilities Council; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) AIC-D-2011-0746; FPA2011-29854; FIS2011-23565; FPA2011-24553; SEV-2012-0249 / MINECO, Spain 21658 / Istanbul University Scientific Research Projects; Istanbul University RII3-CT-2004-506065 / EU under the FP6-Integrated Infrastructure Initiative EURONS 262010 / EU under the FP7-Integrated Infrastructure Initiative ENSAR
Identifiers: 9919006008331
Academic Unit: King Abdulaziz City for Science & Technology
Language: English
Resource Type: Journal article