Kukuvadzwa kwemwaranzi ye graphite poda kune mhedzisiro pahunyanzvi uye hupfumi hwekuita kweiyo reactor, kunyanya mubhedha wehurunguru yakanyanya kupisa gasi-yakatonhorera reactor. Iyo mechanic ye neutron moderation ndiko kupararira kwe elastic kwemanyuturoni uye maatomu echinhu chekuyera, uye simba rinotakurwa naro rinoendeswa kumaatomu echinhu chinoyera. Graphite poda zvakare mumiriri anovimbisa wezve plasma-yakatarisana nezvinhu zvenyukireya fusion reactor. Vanotevera vapepeti vanobva kuFu Ruite vanosuma mashandisirwo egraphite poda mukuedzwa kwenyukireya:
Nekuwedzera kweiyo neutron fluence, iyo graphite powder inotanga kuderera, uye mushure mokunge yasvika kune zvishoma, shrinkage inoderera, inodzokera kuhukuru hwepakutanga, uye inowedzera nokukurumidza. Kuti ushandise nemanyuturoni anoburitswa nefission, anofanirwa kudzikiswa. Izvo zvinopisa zvinhu zve graphite powder zvinowanikwa ne irradiation test, uye irradiation test test inofanira kunge yakafanana neyo chaiyo yekushanda mamiriro e reactor. Chimwe chiyero chekuvandudza mashandisirwo emanyutroni kushandisa zvinhu zvinoratidzira kuratidza manyuturoni ari kubuda munyukireya fission reaction zone-core back. Iyo mechanic ye neutron reflection ndiyo zvakare elastic kuparadzira manyutroni uye maatomu ezvinhu zvinoratidzira. Kuti uchengetedze kurasikirwa kunokonzerwa netsvina kusvika pamwero unobvumirwa, iyo graphite powder inoshandiswa mu reactor inofanira kuva nyukliya yakachena.
Nuclear graphite powder ibazi re graphite poda zvinhu zvakagadzirwa mukupindura zvinodiwa zvekuvaka nuclear fission reactors mukutanga kwe1940s. Inoshandiswa semugadziri, fungidziro uye zvimiro zvekugadzira mareactors, gasi-yakatonhorera reactor uye yakakwirira-tembiricha gasi-yakatonhorera reactor. Mukana wekuti neutron iite nenucleus inodaidzwa kuti cross section, uye thermal neutron (avhareji simba re0.025eV) fission cross chikamu cheU-235 magiredhi maviri akakwira kupfuura fission neutron (avhareji simba re2eV) fission cross section. . Iyo elastic modulus, simba uye mutsara wekuwedzera coefficient yegraphite poda inowedzera nekuwedzera kweneutron fluence, inosvika pakukosha kukuru, uye yobva yaderera nekukurumidza. Mukutanga kwema1940, chete graphite poda yaiwanikwa pamutengo unokwanisika pedyo nekuchena uku, ndicho chikonzero chese reactor uye aitevera ekugadzira reactor akashandisa graphite poda sechinhu chekuenzanisa, achiunza nguva yenyukireya.
Chinokosha chekugadzira isotropic graphite powder ndeye kushandisa coke particles ne isotropy yakanaka: isotropic coke kana macro-isotropic yechipiri coke yakagadzirwa kubva kune anisotropic coke, uye yechipiri coke teknolojia inowanzoshandiswa panguva ino. Saizi yekukuvadzwa kwemwaranzi ine chekuita neyakagadzirwa graphite poda, kugadzira maitiro, nekukurumidza neutron fluence uye fluence rate, irradiation tembiricha uye zvimwe zvinhu. Iyo boron yakaenzana nenyukireya graphite poda inodiwa kuve yakapoteredza 10 ~ 6.
Nguva yekutumira: May-18-2022