Parity Violation in Neutron Resonances in 107,109Ag

Authors

L Y. Lowie, North Carolina State UniversityFollow
J D. Bowman, Los Alamos National LaboratoryFollow
J Corvi, Institute for Reference Materials and MeasurementsFollow
Bret E. Crawford, Gettysburg CollegeFollow
P P J. Delheij, TRIUMFFollow
C M. Frankle, Los Alamos National LaboratoryFollow
M IInuma, Kyoto UniversityFollow
J N. Knudsen, Los Alamos National LaboratoryFollow
A Masaike, Kyoto UniversityFollow
Y Matsuda, Kyoto UniversityFollow
G E. Mitchell, North Carolina State UniversityFollow
S I. Penttila, Los Alamos National LaboratoryFollow
H Postma, Delft University of TechnologyFollow
N R. Roberson, Duke UniversityFollow
S J. Seestrom, Los Alamos National LaboratoryFollow
E I. Sharapov, Joint Institute for Nuclear ResearchFollow
H M. Shimizu, National Laboratory for High Energy PhysicsFollow

Document Type

Article

Publication Date

2-1999

Department 1

Physics

Abstract

Parity nonconservation (PNC) was studied in p-wave resonances in Ag by measuring the helicity dependence of the neutron total cross section. Transmission measurements on natural Ag were performed in the energy range 32 to 422 eV with the time-of-flight method at the Manuel Lujan Neutron Scattering Center at Los Alamos National Laboratory. A total of 15 p-wave neutron resonances were studied in ¹⁰⁷Ag and ninep-wave resonances in ¹⁰⁹Ag. Statistically significant asymmetries were observed for eight resonances in ¹⁰⁷Ag and for four resonances in¹⁰⁹Ag. An analysis treating the PNC matrix elements as random variables yields a weak spreading width of Γ_w=(2.67_-1.21^+2.65)×10^-7 eV for¹⁰⁷Ag and Γ_w=(1.30_-0.74^+2.49)×10^-7 eV for ¹⁰⁹Ag.

Copyright Note

This is the publisher's version of the work. This publication appears in Gettysburg College's institutional repository by permission of the copyright owner for personal use, not for redistribution.

Recommended Citation

Lowie, L. Y., et al. (1999). Parity Violation in Neutron Resonances in 107,109Ag. Physical Review C, 59(2), 1119–1130. http://dx.doi.org/10.1103/PhysRevC.59.1119

Required Publisher's Statement

Copyright held by American Physical Society. First published as LY Lowie et al, Parity Nonconservation in Neutron Resonances in 107,109Ag, Physical Review C, 59:2, 1119–1130, doi: 10.1103/PhysRevC.59.1119.