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摘要
The cross section of the Au-197(n, 2n)Au-196 reaction has been determined at six energies ranging from 15.3-20.9 MeV by means of the activation technique, relative to the Al-27(n, alpha)Na-24 reaction. Quasimonoenergetic neutron beams were produced via the H-3(d, n)(4) He reaction at the 5.5 MV Tandem T11/25 accelerator laboratory of NCSR "Demokritos". After the irradiations, the induced gamma-ray activity of the target and reference foils was measured with high-resolution HPGe detectors. The cross section for the high spin isomeric state (12(-)) was determined along with the sum of the ground (2(-)), the first (5(+)), and second (12(-)) isomeric states. Theoretical calculations were carried out with the codes EMPIRE 3.2.2 and TALYS 1.8. Optimum input parameters were chosen in such away as to simultaneously reproduce several experimental reaction channel cross sections in a satisfactory way, namely the (n, elastic), (n, 2n), (n, 3n), (n, p), (n, alpha), and (n, total) ones.
- 出版日期2018-3-22
