tib txoj hauv kev los tswj lossis tso tseg cov tshuaj tiv thaiv kab mob nuclear yog kom txwv tsis pub cov neutrons ntawm kev sib cais ntau atoms. Tswj cov pas nrig ua los ntawm cov khoom siv neutron-absorbing xws li boron txo tus naj npawb ntawm cov neutrons dawb thiab coj lawv tawm ntawm cov tshuaj tiv thaiv. … Nyob rau hauv tas li ntawd, cov tshuaj tiv thaiv saw nres.
Nws puas tuaj yeem tswj tau cov tshuaj tiv thaiv kab mob?
Ib saw hlau cov tshuaj tiv thaiv yog hais txog cov txheej txheem uas cov neutrons tso tawm hauv fission tsim ib qho fission ntxiv nyob rau hauv tsawg kawg yog ib tug ntxiv nucleus. Cov txheej txheem yuav yog tswj tau (nuclear zog) lossis tswj tsis tau (nuclear riam phom). …
Yuav ua li cas thiaj ua rau cov kab sib txuas sib txuas qeeb qeeb?
Neutron moderators yog ib hom khoom siv hauv lub tshuab hluav taws xob nuclear uas ua haujlwm kom qeeb cov neutrons ceev (tsim los ntawm kev sib cais atoms hauv fissile compounds xws li uranium-235), kom ua lawv ua tau zoo dua hauv cov tshuaj fission saw.
Nws puas yooj yim rau kev sib txuas lus sib txuas mus?
Raws li cov tshuaj tiv thaiv pib, tus naj npawb ntawm uranium-235 nuclei txo qis thiab fission by-products uas nqus neutrons tsim. Txhawm rau kom cov kab mob sib kis mus, cov rods tswj yuav tsum tau thim ntxiv. Qee lub sij hawm, cov tshuaj tiv thaiv tsis tuaj yeem tswj tau thiab cov roj yuav tsum tau muab ntxiv.
Koj puas tuaj yeem nres qhov kev tawm tsam nuclear?
Shutdown txheej txheem. Subcriticality yog ua tiav los ntawm kev txo qis cov neutron-absorbing tswj rods ntawm cov roj hauv cov tub ntxhais reactor. Control rods ntescov neutrons generated nyob rau hauv reactor thiab yog li xaus lub nuclear saw cov tshuaj tiv thaiv.
