Thermal Neutron Capture onto the Stable Tungsten Isotopes

A.M. Hurst, R.B. Firestone, B.W. Sleaford, N.C. Summers, Zs. Revay, L. Szentmiklósi, T. Belgya, M.S. Basunia, R. Capote, H. Choi, D. Dashdorj, J. Escher (+2 others)
2012 EPJ Web of Conferences  
Thermal neutron-capture measurements of the stable tungsten isotopes have been carried out using the guided thermal-neutron beam at the Budapest Reactor. Prompt singles spectra were collected and analyzed using the HYPERMET γ-ray analysis software package for the compound tungsten systems 183 W, 184 W, and 187 W, prepared from isotopically-enriched samples of 182 W, 183 W, and 186 W, respectively. These new data provide both confirmation and new insights into the decay schemes and structure of
more » ... s and structure of the tungsten isotopes reported in the Evaluated Gamma-ray Activation File based upon previous elemental analysis. The experimental data have also been compared to Monte Carlo simulations of γ-ray emission following the thermal neutron-capture process using the statistical-decay code DICEBOX. Together, the experimental cross sections and modeledfeeding contribution from the quasi continuum, have been used to determine the total radiative thermal neutron-capture cross sections for the tungsten isotopes and provide improved decay-scheme information for the structural-and neutron-data libraries. a
doi:10.1051/epjconf/20122110005 fatcat:f5qd3ktiuzehjh5mpejejl4zoa