ABSTRACT
Precise relative gamma-ray intensities of 56Mn and 72Ga produced by neutron irradiation of natural Mn3O4 and enriched 71Ga2O3 (99.8%) were measured by an HPGe detector with highly-precisely calibrated detection efficiencies. As both nuclides exhibit no beta branch to the ground state, the absolute emission probabilities of the 846.8 keV gamma ray for 56Mn and 834.0 keV gamma ray for 72Ga were determined to be 0.9888+/-0.0014 and 0.9553+/-0.0005, respectively.
Subject(s)
Algorithms , Gallium Radioisotopes/analysis , Gamma Rays , Manganese/analysis , Models, Statistical , Radiometry/methods , Gallium Radioisotopes/chemistry , Manganese/chemistry , Radioisotopes/analysis , Radioisotopes/chemistry , Reproducibility of Results , Sensitivity and SpecificityABSTRACT
199Pt has been produced by neutron irradiation of enriched 198Pt (95.71%) metal powder, and precise measurements have been made of the gamma-ray emission probabilities by means of 4pibeta-gamma coincidence apparatus and a live-timed two-dimensional data-acquisition system. Daughter 199Au decays with a half-life of 3.139 d, and therefore the measured disintegration rate had to be corrected. The absolute emission probability of the 543.0 keV gamma ray was determined to be 0.1174+/-0.0007 from the gamma-ray intensity and the corrected disintegration rate.
Subject(s)
Models, Chemical , Models, Statistical , Platinum/analysis , Platinum/chemistry , Radioisotopes/analysis , Radioisotopes/chemistry , Spectrometry, Gamma/methods , Gamma Rays , Half-Life , Quality Control , Reproducibility of Results , Sensitivity and Specificity , Spectrometry, Gamma/standardsABSTRACT
Precise gamma-ray emission probabilities of 88Rb have been measured by 4pi beta-gamma coincidence using a live-timed two-dimensional data-acquisition system. The absolute emission probabilities of the 898.1, 1836.1 and 2677.9 keV gamma rays were determined from the absolute gamma-ray intensities and the disintegration rates to be 14.68+/-0.13%, 22.73+/-0.15% and 2.123+/-0.021%, respectively. The relative intensities were measured for the weak gamma rays by a gamma-ray spectrometer, and the 88Rb decay scheme was determined from these results.