Kauri na boron-polyethylene board shine 2cm-30cm. Filin fasahansa shine aikace-aikacen fasahar nukiliya na ionizing kariya ta radiation. Ana amfani da allon boron-polyethylene don garkuwa da sauri neutrons na filin radiyo na neutron, neutron da Y gauraye filin radiation a fagen ionizing radiation kariya, don hana radiation cutarwa da lalacewar da neutron radiation lalacewa ga ma'aikata da kuma jama'a.
Domin inganta garkuwar garkuwar boron polyethylene akan saurin neutron da kuma magance matsalar da ke da wuya a samar da allon polyethylene na boron a kasuwance a kasar Sin, an samar da katako mai dauke da boron mai dauke da sinadarin boron mai kashi 8%. Dangane da ka'idar garkuwa da neutrons mai sauri, tunda sauran adadin neutrons shine 1.0086649U, yayin da na hydrogen atom (watau protons) shine 1.007825 U [1], atomic mass na neutrons yana kusa da na hydrogen atoms. Saboda haka, lokacin da neutron mai sauri ya yi karo da hydrogen nuclei a cikin jikin garkuwa, Zai fi sauƙi a rasa kuzari ta hanyar tura shi zuwa tsakiya na atom na hydrogen, yana rage saurin neutron don rage neutrons da thermal neutrons. Da yawan hydrogen da jikin garkuwa ya ƙunshi, mafi ƙarfi tasirin daidaitawa zai kasance. Daga cikin abubuwan da ke cikin hydrogen na kayan kariya na neutron da aka saba amfani da su, abun cikin hydrogen na polyethylene shine mafi girma, har zuwa 7.92x IO22 atom / cm3 gas. Don haka, polyethylene shine mafi kyawun matsakaici don garkuwa da sauri neutrons. Bayan an rage saurin neutron a cikin na'urar neutron mai zafi, ana buƙatar kayan kariya tare da babban ɓangaren zafi na neutron mai ƙarfi ba tare da hasken wutar lantarki mai ƙarfi Y ba don ɗaukar neutron ɗin zafi, ta yadda za a cimma manufar kare neutron mai sauri gaba ɗaya. Saboda babban ɓangaren shayarwar neutron na thermal na (3840 lL)X10_24cm2[3], kuma yawan kiB a cikin boron na halitta shine 18.98% [3], wanda ke da sauƙin samu, kayan da ke ɗauke da boron suna da kyau ga garkuwar neutrons na thermal.
Neutron radiation kariya a cikin makamashin nukiliya, matsakaici (high) makamashi accelerators, atomic reactors, nukiliya submarines, likita accelerators, neutron far kayan aikin da sauran wurare.
Lokacin aikawa: Mayu-31-2022
