Search for parity violation in 93Nb neutron resonances

Sharapov E. I.

Bowman J. D.

Crawford B. E.

Delheij P. P. J.

Frankle C. M.

Fukuda Kohji

Iinuma Masataka

Knudson J. N.

Lokitz S. J.

Lowie L. Y.

Masaike Akira

Masuda Yasuhiro

Matsuda Yasuyuki

Mitchell G. E.

Penttilä S. I.

Postma H.

Roberson N. R.

Seestrom S. J.

Shimizu Hirohiko M.

Stephenson S. L.

Yen Y.-F.

Yuan V. W.

Physical Review C - Nuclear Physics

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 width Γw in 93Nb.

eng

American Physical Society

Copyright (c) 1999 The American Physical Society.

[ISSN] 0556-2813

[DOI] 10.1103/PhysRevC.59.1131

[NCID] AA00773613

[DOI] http://dx.doi.org/10.1103/PhysRevC.59.1131