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Parity violation has been observed in a number of previously unreported neutron resonances in silver. Analysis of these parity violation data requires improved neutron resonance spectroscopy. The neutron total cross section for natural silver was measured for En=10–800 eV with the time-of-flight method at the Los Alamos Neutron Scattering Center. The neutron capture reaction was studied with both a natural silver target and a highly enriched sample (98.29%) of 107Ag. A total of 38 previously unreported resonances were observed. The combination of the two measurements allowed assignment of the newly observed resonances to 107Ag or to 109Ag. Resonance parameters were determined for almost all of the neutron resonances observed.

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Copyright held by American Physical Society. First published as LY Lowie et al, Neutron resonance spectroscopy of 107Ag and 109Ag, Physical Review C, 56:1, 729–738, doi: 10.1103/PhysRevC.56.729.