Applied to radioactive decay energies of ib ncig 1-10 MeV , qhov no qhia tias qhov tseem ceeb ntawm txhua qhov beta decay beta decay A beta particle, tseem hu ua beta ray lossis beta radiation (cim β), yog lub zog siab, high -nrawm electron lossis positron emitted los ntawm cov xov tooj cua tawg ntawm lub atomic nucleus thaum lub sij hawm tus txheej txheem ntawm beta lwj. Muaj ob hom beta decay, β- lwj thiab β+ decay, uas tsim electrons thiab positrons feem. https://en.wikipedia.org › wiki › Beta_particle
Beta particle - Wikipedia
electrons yog cov txheeb ze, tab sis tsis muaj alpha hais txog kev sib raug zoo. Kev daws cov lej no muab γ=1.00673, yog li 1% yuam kev pib rau electrons yog 3.4 keV thiab cov protons yog 6.3 MeV.
Yuav ua li cas koj thiaj paub yog tias ib qho hluav taws xob sib txuas?
Hauv lwm lo lus, ib qho loj heev yog qhov sib txheeb thaum nws tag nrho lub zog-lub zog (so mass + kinetic zog) yog tsawg kawg yog ob zaug nws so mass. Qhov xwm txheej no txhais tau hais tias qhov particle qhov ceev yog ze rau qhov ceev ntawm lub teeb.
Puas yog electron non relativistic?
Vim li cas electrons sib txheeb hauv Graphene thiab tsis sib txheeb hauv lub tshuab nqus tsev? Yog tias thaj av dawb hauv qhov chaw muaj qhov sib txawv ntawm ib lub volt, ib qho hluav taws xob hauv cheeb tsam no yuav tau txais lub zog kinetic ntawm 1 eV. Nws qhov ceev yuav me dua li qhov ceev ntawm lub teeb yog li nws yuavua ib qho hluav taws xob tsis sib xws.
Dab tsi yog qhov sib txheeb nrawm ntawm electron?
Sib piv Kinetic Zog: Relativistic Zog Versus Classical Kinetic Zog. Ib qho hluav taws xob muaj qhov nrawm v=0.990c.
Dab tsi yog lub zog sib txheeb ntawm lub tshuab hluav taws xob?
Relativistic momentum p yog classical momentum multiplied by the relativistic factor γ. p=γmu, qhov twg m yog qhov seem ntawm cov khoom, u yog nws qhov nrawm txheeb ze rau tus neeg soj ntsuam, thiab qhov sib npaug γ=1√1−u2c2 γ=1 1 − u 2c 2 ib. Ntawm qhov nrawm nrawm, lub zog sib piv yog sib npaug rau lub sijhawm qub.
