Gamow-Teller Strengths in Proton-Rich Exotic Nuclei Deduced in the Combined Analysis of Mirror Transitions

Y. Fujita, T. Adachi, P. von Brentano, G. P. A. Berg, C. Fransen, D. De Frenne, H. Fujita, K. Fujita, K. Hatanaka, E. Jacobs, K. Nakanishi, A. Negret, N. Pietralla, L. Popescu, B. Rubio, Y. Sakemi, Y. Shimbara, Y. Shimizu, Y. Tameshige, A. Tamii, M. Yosoi, and K. O. Zell

Phys. Rev. Lett. 95, 212501 – Published 16 November 2005

Abstract

Isospin symmetry is expected for the $T_{z} = \pm 1 \to 0$ isobaric analogous transitions in isobars with mass number $A$ , where $T_{z}$ is the $z$ component of isospin $T$ . Assuming this symmetry, strengths of analogous Gamow-Teller (GT) transitions within $A = 50$ isobars were determined from a high energy-resolution $T_{z} = + 1 \to 0$ , ${}^{50}{Cr} ({}^{3}{He}, t) {}^{50}{Mn}$ study at 0° in combination with the decay $Q$ value and lifetime from the $T_{z} = - 1 \to 0$ , ${}^{50}{Fe} \to {}^{50}{Mn}$ $β$ decay. This method can be applied to other $p f$ -shell nuclei and can be used to study GT strengths of astrophysical interest.

Received 22 May 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.212501

Authors & Affiliations

Y. Fujita^1,*, T. Adachi¹, P. von Brentano², G. P. A. Berg^3,†, C. Fransen², D. De Frenne⁴, H. Fujita^1,‡, K. Fujita⁵, K. Hatanaka⁵, E. Jacobs⁴, K. Nakanishi⁵, A. Negret^4,§, N. Pietralla², L. Popescu^4,§, B. Rubio⁶, Y. Sakemi⁵, Y. Shimbara^1,∥, Y. Shimizu⁵, Y. Tameshige⁵, A. Tamii⁵, M. Yosoi⁵, and K. O. Zell²

¹Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
²Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
³Kernfysisch Versneller Instituut, Zernikelaan 25, 9747 AA Groningen, The Netherlands
⁴Vakgroep Subatomaire en Stralingsfysica, Universiteit Gent, B-9000 Gent, Belgium
⁵Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
⁶Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain

^*Electronic address: fujita@rcnp.osaka-u.ac.jp
^†Present address: Department of Physics, University of Notre Dame, IN, USA.
^‡Present address: iThemba LABS, Somerset West, South Africa.
^§Permanent address: NIPNE, Bucharest, Romania.
^∥Present address: NSCL, MSU, East Lansing, MI, USA.

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Vol. 95, Iss. 21 — 18 November 2005

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