Determination of GT-transition Strengths in \(A=34\) Isobars Using Charge Exchange \((^3\text{He},t)\) Reaction

Authors

  • Nguyen Tuan Khai Institute for Nuclear Science and Technology
  • Bui Duy Linh Institute for Nuclear Science and Technology
  • Tran Duc Thiep Institute of Physics, VAST
  • Y. Fujita Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan
  • T Adachi Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan
  • H. Fujita Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan
  • A. Tamii Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan

DOI:

https://doi.org/10.15625/0868-3166/22/1/175

Keywords:

Gamow-Teller transition strength, charge-exchange reaction, isospin symmetry

Abstract

Under the assumption that isospin \(T\) is a good quantum number, mirror transitions \(T_{z }= +1 \to  0\) and \(T_{z }= -1  \to  0\) were studied in \(A = 34\) isobars, where \(T_{z}\) is \(z\) component of iospin \(T\) and is defined by \(T_{z} = (N-Z)/2\). With a high energy resolution of 35 keV in \(^{34}\)S\((^{3}He,t)^{34}\)Cl reaction measurement at \(0^{\circ}\) scattering angle and at an incident energy of 140 MeV/nucleon, strengths of Fermi and Gamow-Teller (GT) transitions from the \(J^{\pi } = 0^{ + }\), \(T_{z }= +1\) ground state of \(^{34}\)S to the \(J^{\pi } = 1^{+ }\), \(T_{z }= 0\) excited states in \(^{34}\)Cl were determined up to excitation energy \((E_{x})\) of \(7.08\) MeV. The corresponding isospin-symmetric transitions connecting \(T_{z }= -1\) and \(T_{z }= 0\) states can be studied in the \(^{34}\)Ar \(\beta ^{ + }\) decay. The strengths of the \((GT)_{\pm }\) transitions were compared up to the excitation energy of 3.1 MeV. A good agreement was observed for two strong transitions to \(2.580\) MeV and \(3.129\) MeV states, while a disagreement about \(45\text{%}\) was observed for a weaker transition to \(0.666\) MeV low-lying state.

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Published

07-05-2012

How to Cite

Khai, N. T., Linh, B. D., Thiep, T. D., Fujita, Y., Adachi, T., Fujita, H., & Tamii, A. (2012). Determination of GT-transition Strengths in \(A=34\) Isobars Using Charge Exchange \((^3\text{He},t)\) Reaction. Communications in Physics, 22(1), 91–96. https://doi.org/10.15625/0868-3166/22/1/175

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