CAJ | 학술논문

在核反应堆中辐照高纯铼金属带，185Re和187Re通过（n,γ)反应后，经β衰变产生186Os和188Os，用H2O2和H2SO4将Re带溶解并同时将186Os和188Os蒸馏出，首先用20%NaOH溶液吸收，然后再将碱吸收液重新蒸馏，最后将186Os和188Os混合同位素保存在25%HCl介质中，用负离子热电离质谱仪（NTIMS）标定其含量及同位素丰度。结果表明，91.4mg的高纯铼金属带，在辐照的累积通量为1.32×1018n/cm2时，可产生Os8.46 μg，其186Os和188Os的同位素丰度分别为60.89%和38.63%。
재핵반응퇴중복조고순래금속대，185Re화187Re통과（n,γ)반응후，경β쇠변산생186Os화188Os，용H2O2화H2SO4장Re대용해병동시장186Os화188Os증류출，수선용20%NaOH용액흡수，연후재장감흡수액중신증류，최후장186Os화188Os혼합동위소보존재25%HCl개질중，용부리자열전리질보의（NTIMS）표정기함량급동위소봉도。결과표명，91.4mg적고순래금속대，재복조적루적통량위1.32×1018n/cm2시，가산생Os8.46 μg，기186Os화188Os적동위소봉도분별위60.89%화38.63%。
The process of preparation of the solution of mixed isotopes of186Os and 188Os in addition to calibration of osmium in it was described. High pure metal rhenium filament was irradiated in reactor and then dissolved in dilute H2O2 and H2SO4 after nearly 5 months decay. Distilled 186Os and 188Os were trapped in 20% NaOH and then distilled again. Finally, 186Os and 188Os were reserved in 25% HCl medium. Negative ion therminoization mass spectrometry was used to measure the abundance and content of osmium in the solution. The final result showed that 91.4 mg Re could yield 8.46 μg Os in which the abundance of 186Os and 188Os were 60.89% and 38.63%, respectively, when integral influx was 1.32×1018 n/cm2.