Abstract
The photoneutron cross section for $^{16}\mathrm{O}$ has been measured with monoenergetic photons from 17 to 33 MeV. This measurement was carried out by subtracting the photoneutron yield for Si from that for Si${\mathrm{O}}_{2}$, thus reducing the uncertainty in the neutron detection efficiency associated with the neutron moderation by the hydrogen in a water sample. The present cross-section results agree with the mean of several previous measurements with monoenergetic photons, and resolve a prior discrepancy at the 22.1-MeV peak. The measured average photoneutron energy is quite large in the photon energy region from 26 to 28 MeV, signifying that ground-state transitions dominate the ($\ensuremath{\gamma}, n$) cross section there.NUCLEAR REACTIONS $^{16}\mathrm{O}(\ensuremath{\gamma}, n)$, measured cross section and average photoneutron energy up to 33 MeV, monoenergetic photons.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
