Positrons yog cov tshuaj tiv thaiv ntawm electrons. Qhov sib txawv loj ntawm electrons yog lawv cov nqi zoo. Positrons raug tsim thaum lub sijhawm tawg ntawm nuclides uas muaj ntau tshaj ntawm cov protons hauv lawv cov nucleus piv rau cov neutronsThaum decaying tshwm sim, cov radionuclides emit ib positron thiab neutrino.
Dab tsi ua rau positron emission?
Positron emission tshwm sim thaum nce quark hloov mus rau hauv quark down, zoo hloov cov proton mus rau neutron.) ruaj khov hauv galactic cosmic rays, vim tias cov electrons raug stripped tam sim ntawd. thiab lub zog lwj yog me me heev rau positron emission.
txheej txheem dab tsi ua rau hluav taws xob thiab positron?
pair ntau lawm yog kev tsim ntawm subatomic particle thiab nws cov antiparticle los ntawm nruab nrab boson. Piv txwv xws li tsim ib qho hluav taws xob thiab ib qho positron, muon thiab antimuon, los yog ib qho proton thiab antiproton. Pair ntau lawm feem ntau yog hais txog ib qho photon tsim ib khub electron-positron ze ntawm lub nucleus.
Cov tshuaj tiv thaiv zoo li cas?
Antiparticles yog tsim nyob rau hauv qhov chaw thiab nyob rau ntau lub hnub los yog hnub qub nyob rau hauv lub ntiaj teb no raws li a tshwm sim ntawm high-zog particle collisionsLub zog cosmic rays los ntawm qhov chaw tawm tsam atoms hauv huab cua thiab tsim antiparticles. Lawv sib tsoo sai sai nrog cov khoom teeb meem thiab rhuav tshem.
Dab tsi yog qhov sib txawv ntawm cov particle thiab nws cov tshuaj tiv thaiv?
Raws li tau sau tseg, ib qho particle thiab nws cov tshuaj tiv thaiv muaj qhov sib npaug ntawm ib leeg, tab sis tawm tsam hluav taws xob, thiab lwm qhov sib txawv ntawm quantum tooj. Qhov ntawd txhais tau hais tias tus proton muaj tus nqi zoo thaum lub antiproton muaj cov nqi tsis zoo thiab yog li lawv sib nyiam.
