Photoneutron Reaction of S^<32>

概要

論文の詳細を見る
The photoneutron cross section of S^<32> was observed up to 22 MeV with good energy resolution, together with the photoneutron spectrum using a stilbene scintillation spectrometer. Fine structures were ob-served in either of the two measurements. Taking into account the threshold energy and the excitation energies of the residual nucleus, these structures have been shown to be consistently related with each other. Experimental results were discussed using the statistical model calculation, assuming that the emitted particles were only p-wave and f-wave particles. The integrated cross section ratio for S^<32> (γ, n) to P^<31> (γ, n) reaction and the same ratio for S^<32> (γ, p) to S^<32> (γ, n) reaction were well explained by the calculations. The difference between the energy spectrum of the photoprotons from P^<31> and that from Si^<28> also seemed to be well explained qualitatively. In the appendix, the contributions of the f-wave protons for the energy spectrum of photoprotons were shown.Summarizing the discussions, the photodisintegration of nuclei in these mass number region was concluded to occur mainly through the compound process in the giant resonance energy region.
社団法人日本物理学会の論文
1963-05-05