Abstract
Activation cross sections for mercury isotopes have been measured at neutron energy between 13.4 and 14.9 MeV by means of the activation method using Fusion Neutronics Source (FNS) at Japan Atomic Energy Research Institute (JAERI). Measured cross sections are those of 196Hg(n, 2n)195m,gHg, 198Hg(n, 2n)197m,gHg, 198Hg(n, p) 198gAu, 199Hg(n, p)199Au, 200Hg(n, p)200m,gAu, 201Hg(n, p)201Au, 202Hg(n, p)202Au, 204Hg(n, 2n)203Hg and 204Hg(n, p)204Au reactions. The cross sections of the 202Hg(n, p)202Au and 204Hg(n, p)204Au reactions were measured for the first time. For the 196Hg(n, 2n) 195m,gHg, 198Hg(n, 2n)197m,gHg, 198Hg(n, p)198gAu and 199Hg(n, p)199Au reactions, the cross sections at plural neutron energies were measured for the first time. The present data were compared with the experimental data reported previously and the recent evaluations, and it was shown that some evaluations need to be improved.
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