U- 238 yog fissionable isotope, txhais tau hais tias nws tuaj yeem nkag mus rau nuclear fission, tab sis cov neutrons raug rho tawm ntawm nws yuav xav tau ntau lub zog thiaj li ua rau fission tshwm sim. … vim ntau lub zog xav tau, U- 238 ib txwm yuav tsis raug fission hauv lub tshuab hluav taws xob nuclear.
Vim li cas U-238 tsis ua rau cov tshuaj tiv thaiv kab mob?
Thaum rab phom raug rho tawm haujlwm, cov neutron tau nkag mus rau hauv U-238 nucleus thiab lub atom ua U-239. Tsis muaj cov tshuaj tiv thaiv kab mob vim tsis muaj cov neutrons raug tso tawm los txuas ntxiv cov tshuaj tiv thaiv.
Vim li cas peb thiaj siv uranium-235 es tsis yog uranium-238?
Qhov txawv ntawm peb isotopes yog tus naj npawb ntawm cov neutrons nyob rau hauv lub nucleus. U-238 muaj 4 ntau neutrons tshaj U-234 thiab peb ntau neutrons tshaj U-235. U-238 yog qhov ruaj khov dua yog li muaj ntau dua ib txwm muaj. U-235 yog siv los ua roj hauv nuclear reactors thiab/los yog riam phom
Vim li cas U-235 fissile tab sis U-238 tsis yog?
Uranium-235 fissions nrog qis-zog thermal neutrons vim hais tias lub zog binding tshwm sim los ntawm kev nqus ntawm ib tug neutron ntau dua lub zog tseem ceeb uas yuav tsum tau rau fission; Yog li ntawd, uranium-235 yog cov khoom fissile. … Yog li ntawd, uranium-238 yog cov khoom siv fissionable tab sis tsis yogcov khoom fissile.
Qhov txawv ntawm uranium-235 thiab 238 yog dab tsi?
Uranium-235 thiab U - 238 yog tshuaj zoo tib yam, tab sis txawv ntawm lawv lub cev, tshwj xeeb tshaj yog lawv pawg. … Lub U-238 nucleus kuj muaj 92 protons tab sis muaj 146 neutrons - peb ntau tshaj U-235 - thiab yog li ntawd muaj ib tug loj ntawm 238 units.
