Ubukhulu bebhodi ye-boron-polyethylene yi-2cm-30cm.Indawo yayo yobugcisa kukusetyenziswa kobuchwephesha benyukliya kukhuselo lwe-ionizing radiation.Ibhodi yeBoron-polyethylene isetyenziselwa ukukhusela iineutron ezikhawulezayo ze-neutron radiation field, neutron kunye ne-Y edibeneyo ye-radiation field kwi-ionizing radiation protection, ukuthintela ingozi yemitha kunye nomonakalo obangelwa yi-neutron radiation kubasebenzi bomsebenzi kunye noluntu.
Ukuze kuphuculwe umphumo wokukhusela we-boron polyethylene kwi-neutron ekhawulezayo kunye nokusombulula ingxaki yokuba kunzima ukuvelisa ibhodi ye-boron polyethylene ngokurhweba e-China, ibhodi ye-polyethylene ene-boron enomxholo we-boron we-8% yaphuhliswa.Ngokubhekiselele kumgaqo wokukhusela i-neutron ekhawulezayo, ekubeni ubunzima bokuphumla kwee-neutron yi-1.0086649U, ngelixa i-athom ye-hydrogen (okt protons) yi-1.007825 U [1], ubunzima be-athomu ye-neutron isondele kwi-athomu ye-hydrogen.Ngoko ke, xa inyutroni ekhawulezayo ingqubana nenyutroni yehydrogen kumzimba okhuselayo, Kulula ukuphulukana namandla ngokuyidlulisela kwinucleus yeathom yehydrogen, icothise inyutroni ekhawulezayo ukucotha iinyutroni kunye nenyutroni yobushushu.Okukhona i-hydrogen iqulathe umzimba okhuselayo, kokukhona isiphumo sokumodareyitha siya kuba namandla.Phakathi komxholo we-hydrogen wezinto eziqhelekileyo zokukhusela i-neutron, umxholo we-hydrogen we-polyethylene ngowona uphezulu, ukuya kuthi ga kwi-7.92x IO22 athomu / cm3 igesi.Ke ngoko, i-polyethylene yeyona modareyitha ilungileyo yokukhusela iineutron ezikhawulezayo.Emva kweeneutron ezikhawulezayo zithotywe kwi-neutrons ezishushu, izinto ezikhuselayo ezinecandelo elikhulu le-thermal lokufunxa i-neutron ngaphandle kwemitha ye-Y-eneji efunekayo ukufunxa i-neutron ye-thermal, ukuze kuphunyezwe injongo yokukhusela i-neutron ngokukhawuleza ngokupheleleyo.Ngenxa ye-thermal neutron yokufunxa icandelo lomnqamlezo (3840 lL) X10_24cm2[3], kunye nobuninzi be-kiB kwi-boron yendalo yi-18.98% [3], ekulula ukuyifumana, izixhobo ezine-boron zikwazi ukufunxa kakuhle ukukhusela i-thermal. iineutron.
Ukhuseleko lwemitha ye-neutron kwizityalo zamandla enyukliya, ii-accelerators zamandla eziphakathi (eziphezulu), ii-athom reactors, iinkwili zenyukliya, ii-accelerators zonyango, izixhobo zonyango lwe-neutron kunye nezinye iindawo.
Ixesha lokuposa: May-31-2022
