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零度麥田新蟲 (初入文壇)
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[求助]
有關(guān)快中子,慢中子的吸收材料
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我們現(xiàn)在在做一項(xiàng)實(shí)驗(yàn),就是用碳化硼做為熱中子吸收材料,加到混凝土中,但對于快中子那么高的能量,有沒有合適的材料加入其中,用碳化硼一起吸收了,有知道的材料列舉一下,謝謝大家 發(fā)自小木蟲IOS客戶端 |
銅蟲 (初入文壇)
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可以參考NIST里面對于neutron absorption cross-section的數(shù)據(jù)(最后一欄ab xs) 一般來講 ab xs 與能量/速度成反比 所以熱中子吸收好的快中子吸收一般也會好(然而有的同位素在特殊的能量有吸收峰) https://www.ncnr.nist.gov/resources/n-lengths/list.html wiki上面也列舉了一些常用的反應(yīng)堆的材料 “The most important neutron absorber is 10B as 10B4C in control rods, or boric acid as a coolant water additive in PWRs. Other important neutron absorbers that are used in nuclear reactors are xenon, cadmium, hafnium, gadolinium, cobalt, samarium, titanium, dysprosium, erbium, europium, molybdenum and ytterbium;[2] all of which usually consist of mixtures of various isotopes—some of which are excellent neutron-absorbers. These also occur in combinations such as Mo2B5, hafnium diboride, titanium diboride, dysprosium titanate and gadolinium titanate.” https://en.wikipedia.org/wiki/Neutron_capture 希望對的你的問題有幫助 |
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