Determination of the Gamow-Teller Quenching Factor from Charge Exchange   Reactions on 90Zr
  Double differential cross sections between 0-12 degrees were measured for the 90Zr(n,p) reaction at 293 MeV over a wide excitation energy range of 0-70 MeV. A multipole decomposition technique was applied to the present data as well as the previously obtained 90Zr(p,n) data to extract the Gamow-Teller (GT) component from the continuum. The GT quenching factor Q was derived by using the obtained total GT strengths. The result is Q=0.88+/-0.06 not including an overall normalization uncertainty in the GT unit cross section of 16%. 
K. Yako, H. Sakai, M. B. Greenfield, K. Hatanaka, M. Hatano, J.   Kamiya, H. Kato, Y. Kitamura, Y. Maeda, C. L. Morris, H. O...