Penning-trap Q -value determination of the 71Ga(ν, e−)71Ge reaction using 
threshold charge breeding of on-line produced isotopes

Frekers, D.; Simon, M.C.; Andreoiu, C.; Bale, J.C.; Brodeur, M.; Brunner, T.; Chaudhuri, A.; Chowdhury, U.; Crespo López-Urrutia, Jose; Delheij, P.; Ejiri, H.; Ettenauer, S.; Gallant, A.T.; Gavrin, V.; Grossheim, A.; Harakeh, M.N.; Jang, F.; Kwiatkowski, A.A.; Lassen, J.; Lennarz, A.; Luichtl, M.; Ma, T.; Macdonald, T.D.; Mané, E.; Robertson, D.; Schultz, B.E.; Simon, Vanessa V.; Teigelhofer, A.; Dilling, J.

doi:10.1016/j.physletb.2013.04.019

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Penning-trap Q -value determination of the ⁷¹Ga(ν, e⁻)⁷¹Ge reaction using threshold charge breeding of on-line produced isotopes

Frekers, D., Simon, M., Andreoiu, C., Bale, J., Brodeur, M., Brunner, T., et al. (2013). Penning-trap Q -value determination of the ⁷¹Ga(ν, e⁻)⁷¹Ge reaction using threshold charge breeding of on-line produced isotopes. Physics Letters B, 722(4-5), 233-237. doi:10.1016/j.physletb.2013.04.019.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000E-FD63-5 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000E-FD64-3

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http://dx.doi.org/10.1016/j.physletb.2013.04.019 (Publisher version) Open Access status unknown

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Creators:
Frekers, D.¹, Author
Simon, M.C.², Author
Andreoiu, C.³, Author
Bale, J.C.^{2, 3}, Author
Brodeur, M.⁴, Author
Brunner, T.^{2, 5}, Author
Chaudhuri, A.², Author
Chowdhury, U.^{2, 6}, Author
Crespo López-Urrutia, Jose⁷, Author
Delheij, P.², Author
Ejiri, H.⁸, Author
Ettenauer, S.^{2, 9}, Author
Gallant, A.T.^{2, 9}, Author
Gavrin, V.¹⁰, Author
Grossheim, A.², Author
Harakeh, M.N.¹¹, Author
Jang, F.⁹, Author
Kwiatkowski, A.A.², Author
Lassen, J.^{2, 12}, Author
Lennarz, A.^{1, 2}, Author
Luichtl, M.², AuthorMa, T.³, AuthorMacdonald, T.D.^{2, 9}, AuthorMané, E.², AuthorRobertson, D.², AuthorSchultz, B.E.², AuthorSimon, Vanessa V.^{2, 13, 14}, Author Teigelhofer, A.^{2, 6}, AuthorDilling, J.^{2, 9}, Author more..

Affiliations:
1Institut für Kernphysik, Westfälische Wilhelms-Universität, 48149 Münster, Germany, ou_persistent22
2TRIUMF, Vancouver, BC V6T 2A3, Canada, ou_persistent22
3Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada, ou_persistent22
4NSCL, Michigan State University, East Lansing, MI 48824, USA, ou_persistent22
5Physik Department E12, Technische Universität München, 85748 Garching, Germany, ou_persistent22
6Department of Physics, University of Manitoba, Winnipeg, MB R3T 2N2, Canada, ou_persistent22
7Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547
8Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 560-0047, Japan, ou_persistent22
9Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z1, Canada, ou_persistent22
10Institute for Nuclear Research, Russian Academy of Sciences, Moscow, 1173122, Russia, ou_persistent22
11Kernfysisch Versneller Instituut, University of Groningen, NL-9747 AA Groningen, The Netherlands, ou_persistent22
12Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada, ou_persistent22
13Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548
14Fakultät für Physik, Ruprecht-Karls-Universität Heidelberg, 69120 Heidelberg, Germany, ou_persistent22

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Abstract: We present a first direct Q-value measurement of the ⁷¹Ga(ν,e⁻)⁷¹Ge reaction using the TITAN mass-measurement facility at ISAC/TRIUMF. The measurements were performed in a Penning trap on neon-like ⁷¹Ga²¹⁺ and ⁷¹Ge²²⁺ using isobar separation of the on-line produced mother and daughter nuclei through threshold charge breeding in an electron-beam ion trap. In addition, isoionic samples of ⁷¹Ga²¹⁺ and ⁷¹Ge²¹⁺ were stored concurrently in the Penning trap and provided a separate Q-value measurement. Both independent measurements result in a combined Q-value of 233.5±1.2 keV233.5±1.2 keV, which is in agreement with the previously accepted Q-value for the ν cross-section calculations. Together with a recent measurement of the ν-response from the excited states in ⁷¹Ge, we conclude that there are no further uncertainties in the nuclear structure, which could remove the persistent discrepancy between the SAGE and GALLEX calibration measurements performed with neutrinos from reactor-produced ⁵¹Cr and ³⁷Ar sources and the theoretical expectation.

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Language(s): eng - English

Dates: Published Online: 2013-04-17

Publication Status: Published online

Pages: 5

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Rev. Type: Peer

Identifiers: DOI: 10.1016/j.physletb.2013.04.019

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Title: Physics Letters B

Source Genre: Journal

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Publ. Info: North-Holland

Pages: - Volume / Issue: 722 (4-5) Sequence Number: - Start / End Page: 233 - 237 Identifier: ISSN: 0370-2693
CoNE: https://pure.mpg.de/cone/journals/resource/954925524777