Constraining the cross section of 82Se(n,g)83Se to validate the beta-Oslo method

The r-process is believed to be one of the major sources of heavy elements. In order to better understand the r-process, neutron-capture cross sections are needed. Neutron-capture cross sections of many r-process nuclei are poorly known due to short half-lives. This has led to the development of techniques such as the beta-Oslo method, which uses beta decay to populate highly excited states of a nucleus. The resulting de-excitation via the emission of gamma rays is used to extract the NLD and gSF of the daughter nucleus. These nuclear properties are used to experimentally constrain the neutron-capture cross section. A validation will be performed with the $^{82}$Se(n,gamma)$^{83}$Se reaction. The beta decay of $^{83}$As to $^{83}$Se has been studied at the NSCL. The NLD and gSF of $^{83}$Se has been extracted using the beta-Oslo method and fed into TALYS to constrain a neutron-capture cross section. The constrained cross section will be compared to a direct measurement.