Video: Yuav ua li cas beta particles raug tsim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A beta particle cov ntaub ntawv thaum ib tug neutron hloov mus rau hauv ib tug proton thiab ib tug high-zog electron. Cov proton nyob twj ywm hauv lub nucleus tab sis cov electron tawm ntawm lub atom li a beta particle . Thaum ib tug nucleus emits a beta particle , cov kev hloov no tshwm sim: tus lej atomic nce 1.
Kuj paub, qhov twg beta hais los ntawm?
Beta Radiation A beta particle yog tawm los ntawm lub nucleus ntawm ib lub atom thaum lub sij hawm radioactive decay. Lub electron, txawm li cas los xij, nyob thaj tsam sab nraum lub nucleus ntawm lub atom. Cov beta particle , zoo li cov hluav taws xob, muaj qhov loj me me piv rau cov proton lossis neutron.
Tsis tas li ntawd, alpha particles ua li cas? Ib alpha particle yog ua los ntawm alpha kev puas tsuaj ntawm ib tug radioactive nucleus. Cov khoom uas ejected yog lub alpha particle , yog ua nce ntawm ob protons thiab ob neutrons: qhov no yog lub nucleus ntawm helium atom.
Kuj tseem yuav paub yog, dab tsi yog lub hauv paus ntawm cov electrons tsim nyob rau hauv beta lwj?
Hauv beta rho tawm ( ua β −) lwj , ib tug neutron hloov mus rau ib tug proton, thiab cov txheej txheem tsim ib tug hluav taws xob thiab ib hluav taws xob antineutrino; thaum nyob hauv beta ntxiv ( ua β +) lwj , ib tug proton hloov mus rau ib tug neutron thiab cov txheej txheem tsim ib tug positron thiab ib tug hluav taws xob neutrino. ua β + lwj tseem hu ua positron tso pa tawm.
Puas yog beta particle yog electron?
A beta particle IS ib hluav taws xob (los yog anti- particle ntawm hluav taws xob - positron). A beta particle yog ib qho ntawm peb hom hluav taws xob uas feem ntau yog tawm los ntawm cov khoom siv hluav taws xob (lossis tsis ruaj khov) - tshwj xeeb los ntawm cov nucleus ntawm lub atom.
Pom zoo:
Puas yog beta particles muaj teeb meem rau tib neeg?
Ib qho beta particle yog li 8,000 npaug me dua li alpha particle - thiab qhov ntawd yog qhov ua rau lawv txaus ntshai. Lawv qhov me me tso cai rau lawv nkag mus rau khaub ncaws thiab tawv nqaij. Kev raug sab nraud tuaj yeem ua rau kub hnyiab thiab cov ntaub so ntswg puas, nrog rau lwm cov tsos mob ntawm kev mob hluav taws xob
Yuav ua li cas cov particles nyob rau hauv ib tug ruaj khov txav?
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Yuav ua li cas dej hiav txwv pem teb raug tsim thiab puas tsuaj?
Kev sib xyaw ua ke: Cov Ntsiab Lus: Cov qauv ntawm kev hloov pauv: dhau sijhawm, cov dej hiav txwv tshiab yog tsim los ntawm kev nce ntawm magma ntawm cov chaw nruab nrab ntawm dej hiav txwv; cov dej hiav txwv qub yog puas los ntawm subduction ntawm cov dej hiav txwv tob. Kev Tshawb Fawb Txog Kev Ua Neej: Cov tsiaj pom ntawm cov qhov dej kub hauv dej hiav txwv