Abstract
We report asymmetries in the forward-angle differential cross sections for pion single-charge-exchange scattering from oriented and unoriented Ho165 nuclei. These asymmetries are directly related to the neutron deformation of a nucleus that has a large charge quadrupole moment. The measured asymmetry extrapolated to 0°is -0.0200.024. In the model of Chiang and Johnson, this value implies a quadrupole deformation ratio 2n/2p=0.840.08, indicating that the excess neutrons are less deformed than the protons. This result conflicts with the predictions of the best available Hartree-Fock models based on Skyrme interactions. We also report on asymmetries of the nonresonant continuum and of the giant dipole resonances.
Original language | English (US) |
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Pages (from-to) | 909-917 |
Number of pages | 9 |
Journal | Physical Review C |
Volume | 50 |
Issue number | 2 |
DOIs | |
State | Published - Jan 1 1994 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics