The charge-exchange (p,n) reactions at intermediate beam energies and small angles, can selectively excite Gamow-Teller (GT) states up to high excitation energies in the final nucleus. Therefore, (p,n) reactions in inverse kinematics applying the missing mass reconstruction[1,2] provide the best and efficient tool to study the B(GT) strengths values of unstable isotopes in a wide excitation energy region, without Q-value limitation.
An experimental program aiming to study the spin-isospin responses of light nuclei along the drip line was started at RIKEN RIBF. A measurement , SAMURAI-30, with 5 days of beam time was approved to investigate 8He, 11Li and 14Be nuclei. In a pilot measurement of the mentioned experiment at HIMAC facility in Chiba, we studied the Gamow-Teller transitions of 6He in inverse kinematical (p,n) reactions at 123 MeV/nucleon incident energy using polyethylene target. Our new neutron detector, PANDORA , with digital readout was also commissioned.
In this talk, details of experiment and the results of B(GT) strengths distribution of 6He will be reported as well as a brief overview of the whole program will be presented.
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