Absolute Activation Cross Sections for Reactions of Bismuth, Copper, Titanium, and Aluminum with 14.8-Mev Neutrons

Absolute neutron activation cross sections at 14.8 Mev have been measured for bismuth, copper, titanium, and aluminum based on comparison with the ${\mathrm{Cu}}^{63}(n, 2n){\mathrm{Cu}}^{62}$ reaction (556 millibarns) which served as a standard for monitoring the flux. The reactions studied, measured half-lives, and cross sections are: ${\mathrm{Bi}}^{209}(n, \alpha ){\mathrm{Tl}}^{206}$, 4.29±0.05 min, 1.1±0.3 mb; ${\mathrm{Bi}}^{209}(n, p){\mathrm{Pb}}^{209}$, 3.31±0.03 hours, 0.83±0.40 mb; ${\mathrm{Bi}}^{209}(n, \gamma ){\mathrm{Bi}}^{210}$, ≤1.7 mb; ${\mathrm{Cu}}^{65}(n, 2n){\mathrm{Cu}}^{64}$, 12.85±0.05 hours, 954±130 mb; ${\mathrm{Cu}}^{65}(n, p){\mathrm{Ni}}^{65}$, 2.56±0.20 hours, 27±11 mb; ${\mathrm{Ti}}^{50}(n, p){\mathrm{Sc}}^{50}$, 1.8±0.2 min, 27±6 mb; ${\mathrm{Ti}}^{50}(n, p){\mathrm{Sc}}^{50}$, 22±3 min, 48±15 mb; ${\mathrm{Ti}}^{50}(n, \gamma ){\mathrm{Ti}}^{51}$, ≤9 mb; ${\mathrm{Ti}}^{49}(n, p){\mathrm{Sc}}^{49}$, 58±2 min, 29±5 mb; ${\mathrm{Ti}}^{48}(n, p){\mathrm{Sc}}^{48}$, 44.0±0.9 hours, 58±8 mb; ${\mathrm{Ti}}^{47}(n, p){\mathrm{Sc}}^{47}$, 3.45±0.06 days, 230±40 mb; ${\mathrm{Ti}}^{46}(n, 2n){\mathrm{Ti}}^{45}$, 3.06±0.08 hours, 50.4±8.0 mb; ${\mathrm{Ti}}^{46}(n, p){\mathrm{Sc}}^{46}$, 85±2 days, ∼520 mb; ${\mathrm{Al}}^{27}(n, \alpha ){\mathrm{Na}}^{24}$, 15.00±0.06 hours, 114±7 mb;