Neutron Skin Thickness of 90Zr Determined By Charge Exchange Reactions
arXiv:nucl-ex/0609046 · doi:10.1103/PhysRevC.74.051303
Abstract
Charge exchange spin-dipole (SD) excitations of 90Zr are studied by the 90Zr(p,n) and 90Zr(n,p) reactions at 300 MeV. A multipole decomposition technique is employed to obtain the SD strength distributions in the cross section spectra. For the first time, a model-independent SD sum rule value is obtained: 148+/-12 fm^2. The neutron skin thickness of 90Zr is determined to be 0.07+/-0.04 fm from the SD sum rule value.
4 pages, 2 figures, submitted to Phys. Rev. C
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