Neutron Resonance Spectroscopy of 117Sn from1 eV to 1.5 keV

D A. Smith, Los Alamos National Laboratory
J D. Bowman, Los Alamos National Laboratory
Bret E. Crawford, Gettysburg College
C A. Grossmann, North Carolina State University
T Haseyama, Kyoto University
Mikkel B. Johnson, Los Alamos National Laboratory
A Masaike, Kyoto University
Y Masuda, National Laboratory of High Energy Physics
Y Matsuda, Kyoto University
G E. Mitchell, North Carolina State University
V A. Nazarenko, Petersburg Nuclear Physics Institute
S I. Penttila, Los Alamos National Laboratory
N R. Roberson, Duke University
S J. Seestrom, Los Alamos National Laboratory
E I. Sharapov, Joint Institute for Nuclear Research
L M. Smotritsky, Petersburg Nuclear Physics Institute
Sharon L. Stephenson, Gettysburg College
V W. Yuan, Los Alamos National Laboratory

Copyright held by American Physical Society. First published as DA Smith et al, Neutron resonance spectroscopy of 117Sn from 1 eV to 1.5 keV, Physical Review C, 59:5, 2836–2843, doi: 10.1103/PhysRevC.59.2836.


Parity violation has been studied recently for neutron resonances in 117Sn. The neutron resonance spectroscopy is essential for the analysis of the parity violation data. We have measured neutron resonances in 117Sn for neutron energies from 1 to 1500 eV using the time-of-flight method and the (n,γ) reaction. The sample was enriched to 87.6% 117Sn. Neutron scattering and radiative widths were determined, and orbital angular momentum assignments were made with a Bayesian analysis. The s-wave and p-wave strength functions and average level spacings were determined.