The ¹⁶⁰(n,xγ) Reaction for 67 ≤ E_n ≤ 11 MeV

We have obtained gamma-ray spectra for the reactions ¹⁶O(n,n′γ)¹⁶O and ¹⁶O(n,αγ)¹³C for incident-mean-neutron energies E_n between 6.7 and 11.0 MeV. The gamma rays were detected using a 30 cm³ coaxial Ge(Li) detector placed at 55 and 90 deg with respect to the incident-neutron direction. Time-of-flight electronics was used with the gamma-ray detector to discriminate against unwanted pulses due to neutrons and background gamma radiation. Two samples of 75 and 31 gm of BeO in the form of right circular cylinders were used. The incident-neutron beam was produced by bombarding a deuterium-filled gas cell with a pulsed deuteron beam of appropriate energy; for E_n ≤ 8.5 MeV the deuteron beam was obtained from the ORNL 6-MV Van de Graaff, and for E_n ≥ 8.5 MeV it was obtained from the ORNL Tandem Van de Graaff. These data have been reduced to differential cross sections for production of gamma rays from ¹⁶O. The cross sections have been compared, where possible, with previously measured values with reasonable agreement. However, there are several important differences, and these are discussed. Summing the partial cross sections yields values for the total nonelastic cross section which are in good agreement with values for the nonelastic cross section obtained from the difference between the total cross section and the total elastic cross section.