Abstract
Several useful secondary standard gamma-ray energies have been measured with a high-resolution Ge(Li) detector. By intercomparing close-lying full-energy peaks and pair-escape peaks, precise energy values are determined. The resulting values in keV and based on the annihilation gamma energy 511.003±0.005 keV and standard gamma energies of 182Ta, 192Ir, 198Au and 137Cs are as follows: 141 Ce−145.41±0.03; 51 Cr−320.11±0.03; 69 Zn m −438.70±0.10; 60 Co−1173.25±0.08; 22 Na−1274.58±0.10; 41 Ar−1293.76±0.14; 60 Co−1332.56±0.05; 52 V−1434.19±0.05; 124 Sb−1691.24±0.08; 28 Al−1778.70±0.17; 88 Y−1836.17±0.12 .
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