Dhumucda guddiga boron-polyethylene waa 2cm-30cm. Goobtiisa farsamada waa adeegsiga tignoolajiyada nukliyeerka ee ilaalinta shucaaca ionizing. Guddiga boron-polyethylene waxaa loo isticmaalaa in lagu ilaaliyo neutron-yada degdega ah ee goobta shucaaca neutron-ka, neutron-ka iyo goobta shucaaca isku dhafan ee Y ee ku taal goobta ilaalinta shucaaca ionizing, si looga hortago waxyeelada shucaaca iyo dhaawaca ay keento shucaaca neutron-ka shaqaalaha shaqada iyo dadweynaha.
Si loo hagaajiyo saameynta gaashaanka ee boron polyethylene ee neutron-ka degdega ah iyo in la xalliyo dhibaatada ah in ay adag tahay in la soo saaro boor polyethylene-ka boron ee ganacsi ahaan Shiinaha, waxaa la sameeyay guddi polyethylene ah oo ay ku jirto boron oo leh boron oo ah 8%. Marka la eego mabda'a ilaalinta neutron-ka degdega ah, maadaama inta kale ee neutron-ku ay tahay 1.0086649U, halka atamka hydrogen (tusaale ahaan protons) uu yahay 1.007825 U [1], cufka atomiga ee neutron-ku wuxuu u dhow yahay atamka hydrogen. Sidaa darteed, marka neutron-ka degdega ah uu la kulmo nucleus-ka hydrogen-ka ee jirka gaashaanka, way fududahay in la lumiyo tamarta iyadoo loo wareejinayo xudunta atamka hydrogen-ka, iyadoo la dhimayo neutron-ka degdega ah si loo gaabiyo neutron-ka iyo neutron-ka kulaylka. Inta badan ee haydarojiinku ku jiro jirka gaashaanka, ayaa sii xoogaysanaya saameynta dhexdhexaadinta. Ka mid ah waxyaabaha ku jira haydarojiinta ee walxaha ilaalinta neutron-ka ee si caadi ah loo isticmaalo, waxa ku jira haydarojiinta ee polyethylene-ka ugu sarreeya, ilaa 7.92x atamka IO22 / gaaska cm3. Sidaa darteed, polyethylene-ku waa habka ugu wanaagsan ee lagu ilaalin karo neutron-yada dhaqsaha badan. Ka dib marka neutron-yada degdega ah loo gaabiyo neutron-yada kulaylka, walxaha difaaca ee leh qaybta weyn ee nuugista neutron-ka kulaylka iyada oo aan lahayn shucaaca Y-tamar sare leh ayaa loo baahan yahay si loo nuugo neutron-yada kulaylka, si loo gaaro ujeeddada ah in si buuxda loo ilaaliyo neutron-yada degdegga ah. Sababtoo ah qaybta sare ee nuugista neutron-ka kulaylka ee (3840 lL)X10_24cm2[3], iyo tirada kiB ee boron-ka dabiiciga ah waa 18.98% [3], taas oo si fudud loo heli karo, walxaha ka kooban boron-ku waa kuwo si fiican u nuuga si loo ilaaliyo neutron-yada kulaylka.
Ilaalinta shucaaca neutron-ka ee warshadaha tamarta nukliyeerka, dardar-geliyeyaasha tamarta dhexdhexaadka ah (sare), fal-galayaasha atomiga, maraakiibta quusta nukliyeerka, dardar-geliyeyaasha caafimaadka, qalabka daaweynta neutron-ka iyo meelo kale.
Waqtiga boostada: Maajo-31-2022
