一、序言 研究铟、镓、锡合金的性能是建造γ辐射回路的要求。目前我国辐射加工业采用~(60)Co作为放射源。γ辐射回路与~(60)Co源相比具有下列优点: ①生产~(60)Co需耗费核反应堆活性区的中子,而γ辐射回路主要利用防护区中的无用中子。 ②γ回路可以得到比~(60)Co源更高的比活性。 ③~(60)Co是吸收体,为避免超临界事故,出堆时 First, the preamble study Indium, gallium, tin alloy performance is the construction of γ radiation circuit requirements. At present, China’s radiation processing industry uses ~ (60) Co as a radioactive source. Compared with the ~ (60) Co source, the γ radiation circuit has the following advantages: ① The production of ~ (60) Co consumes the neutron in the active region of the nuclear reactor, while the γ radiation circuit mainly utilizes the useless neutron in the protection zone. ②γ loop can get higher than the ~ (60) Co source of specific activity. ③ ~ (60) Co is the absorber, in order to avoid supercritical accidents, heap time