Excitation functions and isomeric cross section ratios of theCu63(n,α)60Com,g,Cu65(n,α)62Com,g, andNi60(n,p)60Com,gprocesses from 6 to 15 MeV

摘要: Excitation functions were measured for the {sup 63}Cu({ital n},{alpha}){sup 60}Co{sup {ital m}}, 65}Cu({ital 62}Co{sup and g}} reactions over neutron energy range of 6.3 to 14.8 MeV. Use was made activation technique in combination with high resolution {gamma}-ray spectroscopy. The nuetrons produced via 2}H({ital d},{ital n}){sup 3}He reaction using a deuterium gas target at variable compact cyclotron ({ital E}{sub n}}=6.3--11.9 MeV) 3}H({ital 4}He solid Ti-T generator n}}=13.7--14.8 MeV). From available experimental data isomeric cross section ratios determined pair m},}{ital g} n},{alpha}) 60}Ni({ital n},{ital p}) reactions, reaction. Statistical model calculations taking into account precompound effects performed formation both ground states products. calculational results on total sections agree well data; case states, however, some deviations occur. Themore » are reproduced only approximately by calculation; 15 MeV spin distribution level density has significant effect calculation. For low-lying levels ratio depends strongly spins involved not their excitation energies. At given population higher isomer appears be process than reaction.« less