Nkhani

Bolodi ya boron-polyethylene ndi makulidwe a 2cm-30cm. Bolodi ya boron-polyethylene imagwiritsidwa ntchito kuteteza ma neutrons othamanga a munda wa neutron radiation, neutron ndi Y mixed radiation m'munda wa ionizing radiation protection, kuti apewe kuwonongeka ndi kuwonongeka kwa ma radiation chifukwa cha ma neutron radiation kwa ogwira ntchito komanso anthu wamba.
Pofuna kukonza mphamvu ya boron polyethylene yoteteza pa neutron yothamanga komanso kuthetsa vuto lakuti n'zovuta kupanga bolodi la boron polyethylene m'malonda ku China, bolodi la polyethylene lokhala ndi boron lokhala ndi boron la 8% linapangidwa. Ponena za mfundo yoteteza ma neutron othamanga, popeza kulemera kotsala kwa ma neutron ndi 1.0086649U, pomwe kwa ma atomu a haidrojeni (monga ma proton) ndi 1.007825 U [1], kulemera kwa ma neutron a atomiki kumakhala pafupi ndi kwa ma atomu a haidrojeni. Chifukwa chake, pamene neutron yothamanga igundana ndi nuclei ya haidrojeni m'thupi loteteza, N'zosavuta kutaya mphamvu poisuntha kupita ku nucleus ya atomu ya haidrojeni, kuchepetsa liwiro la ma neutron othamanga kupita ku ma neutron othamanga ndi ma neutron otenthetsera. Pamene thupi loteteza lili ndi haidrojeni yochuluka, mphamvu yowongolera imakhala yolimba. Pakati pa kuchuluka kwa haidrojeni m'zinthu zoteteza ma neutron zomwe zimagwiritsidwa ntchito nthawi zambiri, kuchuluka kwa haidrojeni kwa polyethylene ndikokwera kwambiri, mpaka ma atomu 7.92x IO22 /cm3 gas. Chifukwa chake, polyethylene ndiye woyang'anira wabwino kwambiri woteteza ma neutron othamanga. Pambuyo poti ma neutron othamanga achepetsedwa kukhala ma neutron otenthetsera, zinthu zotchingira zokhala ndi gawo lalikulu la kutentha kwa neutron lopanda mphamvu ya Y yochuluka zimafunika kuti zinyamule ma neutron otenthetsera, kuti cholinga choteteza ma neutron othamanga chikwaniritsidwe. Chifukwa cha kutentha kwa neutron kochuluka kwa (3840 lL)X10_24cm2[3], komanso kuchuluka kwa kiB mu boron yachilengedwe ndi 18.98% [3], komwe ndikosavuta kupeza, zinthu zokhala ndi boron zimakhala zonyowa bwino poteteza ma neutron otenthetsera.
Chitetezo cha ma neutron radiation m'mafakitale amagetsi a nyukiliya, ma accelerator apakati (amphamvu kwambiri), ma atomu reactor, sitima zapamadzi za nyukiliya, ma accelerator azachipatala, zida zochiritsira ma neutron ndi malo ena.