The irradiation of highly enriched Ca/sup 48/ CO/sub 3/ with a bremsstrahlung beam of maximum energy 46 Mev produced Ca/sup 47/ with a yield of 1.1 to 3.0 mu c/mg Ca/sup 48/ at half saturation. The half life of a sample measured through aluminum absorber to eliminate the contribution by the Sc/sup 47/ daughter was 4.51 plus or minus 6.02 days. By comparison with the Cu/sup 63/ ( gamma ,n)Cu/sup 62/ reaction the integrated cross section from 0 to 46 Mev for the sum of the reactions Ca/sup 48/( gamma ,n)Ca/sup 47/ and Ca/sup 48/( gamma ,p)K/sup 47/ was calculated …
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The irradiation of highly enriched Ca/sup 48/ CO/sub 3/ with a bremsstrahlung beam of maximum energy 46 Mev produced Ca/sup 47/ with a yield of 1.1 to 3.0 mu c/mg Ca/sup 48/ at half saturation. The half life of a sample measured through aluminum absorber to eliminate the contribution by the Sc/sup 47/ daughter was 4.51 plus or minus 6.02 days. By comparison with the Cu/sup 63/ ( gamma ,n)Cu/sup 62/ reaction the integrated cross section from 0 to 46 Mev for the sum of the reactions Ca/sup 48/( gamma ,n)Ca/sup 47/ and Ca/sup 48/( gamma ,p)K/sup 47/ was calculated to be 29 Mev-mbarn. The Ca/sup 45/ content of the sample calculated to the end of the bombardment was approximately 0.04%, probably the result of the Ca/sup 48/( gamma ,3n) and ( gamma ,p2n) reactions. (auth)
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