Possible evidence of nonstatistical properties in the ${}^{35}$Cl(n,p)${}^{35}$ cross section

Abstract

The ${}^{35}$Cl(n,p) and ${}^{35}$Cl(n,α) cross sections at incident neutron energies between 2.42 - 2.74 MeV, were measured using the Berkeley High Flux Neutron Generator. The cross sections for ${}^{35}$Cl(n,p) were more than a factor of three to five less than all of the values in the neutron absorption data libraries, while the ${}^{35}$Cl(n,α) cross sections are in reasonable agreement with the data libraries. The measured energy-differential cross section is consistent with a single resonance with a width of 293(46) keV. This result suggests that, despite the high incident neutron energy, any attempt to model (n,x) cross sections in the vicinity of the N = Z = 20 shell gap requires a resolved resonance approach rather than Hauser-Fesbach.

Su-Ann Chong

Ph.D. Candidate, Nuclear Engineering

My interests include data analytics, applied machine learning and sensor development.