Video: Lub zog ntawm beta particle yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Beta hais nrog ib zog ntawm 0.5 MeV muaj thaj tsam li ib meter hauv huab cua; qhov kev ncua deb yog nyob ntawm tus particle zog . Beta hais yog ib hom ionizing hluav taws xob thiab rau hluav taws xob Lub hom phiaj tiv thaiv yog suav tias yog ionizing ntau dua li gamma rays, tab sis tsawg ionizing dua alpha cov khoom.
Ib yam li ntawd, tib neeg nug, dab tsi yog tus nqi ntawm beta particle?
Vim lawv muaj ib tug loj nqi , alpha cov khoom ionise lwm atoms muaj zog. Beta hais muaj a nqi ntawm rho tawm 1, thiab qhov loj ntawm li 1/2000th ntawm ib tug proton. Qhov no txhais tau tias beta hais yog tib yam li ib tug electron.
Tom qab ntawd, lo lus nug yog, dab tsi yog beta zoo particle? beta lwj In beta lwj. Hauv positron emission, kuj hu ua zoo beta lwj ( ua β +-decay), ib tug proton nyob rau hauv niam txiv nucleus decays mus rau hauv ib tug neutron uas tseem nyob rau hauv tus ntxhais nucleus, thiab lub nucleus emits ib tug neutrino thiab ib tug positron, uas yog ib tug zoo particle zoo li ib qho hluav taws xob zoo tib yam hauv huab cua tab sis…
Tib neeg kuj nug, vim li cas cov beta particles muaj ntau lub zog?
Tso tawm beta particle muaj ib tug nruam kinetic zog spectrum. Cov lub zog ntau yam los ntawm 0 mus rau qhov siab tshaj plaws muaj zog Q. Lub nruam zog spectrum tshwm sim vim Q yog sib koom ntawm electron thiab antineutrino.
Dab tsi yog beta particle ua los ntawm?
Beta hais yog emitted los ntawm neutron nplua nuj tsis ruaj tsis khov nuclei. Beta hais yog cov hluav taws xob hluav taws xob siab. Cov electrons no tsis yog electrons los ntawm lub plhaub hluav taws xob nyob ib ncig ntawm lub nucleus, tab sis yog tsim thaum lub neutron nyob rau hauv lub nucleus splits los ua ib tug proton thiab ib tug nrog electron.
Pom zoo:
Lub zog ntawm lub zog yog dab tsi?
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