Gamma Rays of Tellurium-131 and Tellurium-129
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Los 7 rayos de Te131 y Te129 fueron estudiados en el laboratorio de espectroscopia nuclear de este Instituto por medio de un espectrómetro de cristal equipado con un canal deslizante. Calibraciones de energía y eficiencia se realizaron mediante Hg2O3, Cs137, Na22 e Y88, y solo se utilizaron fotopicos. La mayoría de las muestras fueron preparadas por irradiación de telurito de sodio con deuterones de 26 Mev en el sincrociclotrón de este Instituto. Después de extraer el yodo dos veces, se precipitó el telurio en presencia de portadores de holback adecuados y se purificó mediante una precipitación de barrido de hidróxido férrico y una segunda precipitación de telurio. En algunos casos, Te129 se obtuvo libre de Te131 a través de una fracción de antimonio separada por formación de hidruros a partir de óxido de uranio irradiado con deuterones. (Estas separaciones se realizaron en los Laboratorios de Radioquímica.)
The 7 rays of Te131 and Te129 were studied in the laboratory for nuclear spectroscopy of this Institute by means of a crystal spectrometer equipped with a sliding channel. Energy and efficiency calibrations were performed by means of Hg203, Cs137,Na22, and Y88 ,and only photopeaks were used. Most of the samples were prepared by irradiation of sodium tellurite with 26-Mev deuterons in the synchrocyclotron of this Institute. After iodine had been extracted twice, tellurium was precipitated in the presence of suitable holback carriers, and purified by a scavenging precipitation of ferric hydroxide and a second tellurium precipitation. In some cases Te129 was obtained free from Te131 via an antimony fraction separated by hydride formation from uranium oxide irradiated with deuterons. (These separations were performed in the Radiochemistry Laboratories.)
The 7 rays of Te131 and Te129 were studied in the laboratory for nuclear spectroscopy of this Institute by means of a crystal spectrometer equipped with a sliding channel. Energy and efficiency calibrations were performed by means of Hg203, Cs137,Na22, and Y88 ,and only photopeaks were used. Most of the samples were prepared by irradiation of sodium tellurite with 26-Mev deuterons in the synchrocyclotron of this Institute. After iodine had been extracted twice, tellurium was precipitated in the presence of suitable holback carriers, and purified by a scavenging precipitation of ferric hydroxide and a second tellurium precipitation. In some cases Te129 was obtained free from Te131 via an antimony fraction separated by hydride formation from uranium oxide irradiated with deuterons. (These separations were performed in the Radiochemistry Laboratories.)