Parity Nonconservation in Neutron Resonances in 133Cs

Authors

E I. Sharapov, Joint Institute for Nuclear ResearchFollow
J D. Bowman, Los Alamos National LaboratoryFollow
Bret E. Crawford, Gettysburg CollegeFollow
P P J. Delheij, TRIUMFFollow
T Haseyama, Kyoto UniversityFollow
J N. Knudsen, Los Alamos National LaboratoryFollow
L Y. Lowie, North Carolina State UniversityFollow
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
Sharon L. Stephenson, Gettysburg CollegeFollow
Y-F Yen, Los Alamos National LaboratoryFollow
V W. Yuan, Los Alamos National LaboratoryFollow

Document Type

Article

Publication Date

3-1999

Department 1

Physics

Abstract

Spatial parity nonconservation (PNC) has been studied in the compound-nuclear states of ¹³⁴Cs by measuring the helicity dependence of the neutron total cross section. Transmission measurements on a thick ¹³³Cs target were performed by the time-of-flight method at the Manuel Lujan Neutron Scattering Center with a longitudinally polarized neutron beam in the energy range from 5 to 400 eV. A total of 28 new p-wave resonances were found, their neutron widths determined, and the PNC longitudinal asymmetries of the resonance cross sections measured. The value obtained for the root-mean-square PNC element M=(0.06_-0.02^+0.25) meV in ¹³³Cs is the smallest among all targets studied. This value corresponds to a weak spreading width Γ_w=(0.006_-0.003^+0.154)×10^-7 eV.

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

Sharapov, E I.; Bowman, J D.; Crawford, B E.; Delheij, P P J.; Haseyama, T; Knudsen, J N.; Lowie, L Y.; Masaike, A; Masuda, Y; Matsuda, Y; Mitchell, G E.; Penttila, S I.; Postma, H; Roberson, N R.; Seestrom, S J.; Stephenson, Sharon; Yen, Y-F; and Yuan, V W., "Parity Nonconservation in Neutron Resonances in 133Cs" (1999). Physical Review C, 59(3), 1772–1779. http://dx.doi.org/10.1103/PhysRevC.59.1772

Required Publisher's Statement

Copyright held by American Physical Society. First published as EI Sharapov et al, Parity Nonconservation in Neutron Resonances in 133Cs, Physical Review C, 59:3, 1772–1779, doi: 10.1103/PhysRevC.59.1772.