Fission reactors haus cov fissile isotope ib txwm tshwm sim, uas yog, U-235 Fission tshwm sim los ntawm kev nqus ntawm qeeb (thermal) neutrons. Uranium ores muaj cov isotope faib hauv qab no: 6 × 10 - 5ntawm U-234, 7.11 × 10 - 3 ntawm U-235, thiab 0.99283 ntawm U-238.
YYuav ua li cas isotope ntawm uranium U yog fissionable?
uranium enriched nyob rau hauv nkag tau yooj yim fissionable isotope 235U , uas yog xav tau rau nuclear reactors thiab nuclear riam phom. (Natural uranium tsuas muaj li ntawm 0.7 feem pua 235 U, nrog rau cov seem ntawm cov isotopic sib xyaw suav nrog yuav luag tag nrho 238 U.)
Yuav ua li cas yog isotope ntawm uranium yog fissionable thiab yog vim li cas?
Uranium muaj ob lub isotopes, U 235 thiab U238. U235 yog fissionable yooj yim vim tias qeeb neutrons (neutrons muaj thermal zog) tuaj yeem ua rau fission.
Vim li cas uranium-238 tsis fissionable?
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.
YYuav ua li cas isotopes fissionable?
Thaum uranium-235 yog qhov tshwm sim fissionable isotope, muaj lwm cov isotopes uas tuaj yeem raug ntxias kom fission los ntawm neutron bombardment. Plutonium-239 kuj yog fissionable los ntawm bombardment nrog qeeb neutrons, thiab ob qho tib si nws thiab uranium-235 tau siv los ua nuclear fission foob pob.
