Determination of the Gamow-Teller Quenching Factor from Charge Exchange Reactions on 90Zr

Details Determination of the Gamow-Teller Quenching Factor from Charge Exchange Reactions on 90Zr Determination of the Gamow-Teller Quenching Factor from Charge Exchange Reactions on 90Zr

2004-11-08

arxiv.org/abs/nucl-ex/0411011v3

Phys.Lett. B615 (2005) 193-199

Physics

Nuclear Physics

Nuclear Experiment

11 papes, 4 figures, submitted to Physics Letters B (accepted), gzipped tar file, changed contents

Scientific paper

10.1016/j.physletb.2005.04.032

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%.

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