Search for Parity Violation in 93Nb Neutron Resonances

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
C M. Frankle, Los Alamos National Laboratory
K Fukuda, Meiji College of Oriental Medicine
M IInuma, Kyoto UniversityFollow
J N. Knudsen, Los Alamos National LaboratoryFollow
J Lokitz, North Carolina State University
L Y. Lowie, North Carolina State UniversityFollow
A Masaike, Kyoto UniversityFollow
Y Matsuda, National Laboratory of High Energy PhysicsFollow
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
H M. Shimizu, National Laboratory for High Energy PhysicsFollow
Sharon L. Stephenson, Gettysburg CollegeFollow
Y-F Yen, Los Alamos National LaboratoryFollow
V W. Yuan, Los Alamos National LaboratoryFollow

Document Type

Article

Publication Date

2-1999

Department 1

Physics

Abstract

A new search has been performed for parity violation in the compound nuclear states of ⁹⁴Nb by measuring the helicity dependence of the neutron total cross section. Transmission measurements on a thick niobium 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 32 to 1000 eV. A total of 18 p-wave resonances in ⁹³Nb were studied with none exhibiting a statistically significant parity-violating longitudinal asymmetry. An upper limit of 1.0×10^-7 eV (95% confidence level) was obtained for the weak spreading widthΓ_w in ⁹³Nb.

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., Frankle, C. M., Fukuda, K., IInuma, M., Knudsen, J. N., Lokitz, J., Lowie, L. Y., Masaike, A., Masuda, Y., Matsuda, Y., Mitchell, G.,E., Penttila, S. I., Postma, H., Roberson, N. R., Seestrom, S. J., Shimizu, H. M., Stephenson, S., Yen, Y.-F., &Yuan, V. W. (1999). Search for Parity Violation in 93Nb Neutron Resonances. Physical Review C, 59(2), 1131-1135. http://dx.doi.org/10.1103/PhysRevC.59.1131

Required Publisher's Statement

Copyright held by American Physical Society. First published as EI Sharapox et al, Search for Parity Violation in 93Nb Neutron Resonances, Physical Review C, 59:2, 1131-1135, doi: 10.1103/PhysRevC.59.1131.