High resolution (3He,t) experiment on the double-β decaying nuclei 128Te and 130Te

P. Puppe, A. Lennarz, T. Adachi, H. Akimune, H. Ejiri, D. Frekers, H. Fujita, Y. Fujita, M. Fujiwara, E. Ganioğlu, E.-W. Grewe, K. Hatanaka, R. Hodak, C. Iwamoto, N. T. Khai, A. Okamoto, H. Okamura, P. P. Povinec, G. Susoy, T. Suzuki, A. Tamii, J. H. Thies, and M. Yosoi
Phys. Rev. C 86, 044603 – Published 1 October 2012

Abstract

Gamow-Teller (GT) strength distributions have been investigated in a high-resolution (3He,t) charge-exchange experiment on the double-β (ββ ) decaying nuclei 128Te and 130Te. The experiment was carried out at the Research Center for Nuclear Physics, Osaka, with a 420-MeV incident 3He beam and the Grand Raiden magnetic spectrometer. A final-state energy resolution of 35 keV was achieved. The extracted GT strength distributions at low excitation energies in the final nuclei 128I and 130I are presented and discussed in the context of the ββ decay matrix elements for the two tellurium nuclei. The additional neutron pair in 130Te seems to produce a moderate increase in the fragmentation of the low-energy GT distribution.

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  • Received 5 July 2012

DOI:https://doi.org/10.1103/PhysRevC.86.044603

©2012 American Physical Society

Authors & Affiliations

P. Puppe1, A. Lennarz1, T. Adachi2, H. Akimune3, H. Ejiri4,5, D. Frekers1,*, H. Fujita6, Y. Fujita4,6, M. Fujiwara7, E. Ganioğlu8, E.-W. Grewe1,†, K. Hatanaka4, R. Hodak9, C. Iwamoto3, N. T. Khai10, A. Okamoto3, H. Okamura4,‡, P. P. Povinec9, G. Susoy8, T. Suzuki4, A. Tamii4, J. H. Thies1, and M. Yosoi11

  • 1Institut für Kernphysik, Westfälische Wilhelms-Universität, 48149 Münster, Germany
  • 2Research Center for Electron and Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
  • 3Department of Physics, Konan University, Kobe 658-8501, Japan
  • 4Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
  • 5Nuclear Science, Czech Technical University, Prague, Czech Republic
  • 6Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
  • 7Gifu University, Yanagido, Gifu 501-1193, Japan
  • 8Department of Physics, Science Faculty, Istanbul University, 34134 Vezneciler, Istanbul, Turkey
  • 9Department of Nuclear Physics and Biophysics, Comenius University, 84248 Bratislava, Slovakia
  • 10Center for Nuclear Science and Technology, Hanoi, Vietnam
  • 11Graduate School of Sciences and Technology, Niigata University, Nishi, Niigata 950-2181, Japan

  • *frekers@uni-muenster.de
  • Present address: RWE Vertrieb AG, Dortmund, Germany.
  • Deceased.

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Vol. 86, Iss. 4 — October 2012

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