Dab tsi yog qhov sib txheeb loj ntawm beta particle?
Dab tsi yog qhov sib txheeb loj ntawm beta particle?

Video: Dab tsi yog qhov sib txheeb loj ntawm beta particle?

Video: Dab tsi yog qhov sib txheeb loj ntawm beta particle?
Video: Xwm Kab Yog Dab Tsi?: Hmoob Nkag Siab Yuam Kev Tag Lawm 2024, Kaum ib hlis
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A beta particle muaj ib txheeb ze pawg ntawm zero, yog li nws pawg tus lej yog xoom. Raws li cov beta particle yog ib qho hluav taws xob, nws tuaj yeem sau ua 0 -1e. Txawm li cas los xij, qee zaum kuj tau sau ua 0 -1 ua β . Cov beta particle yog ib qho hluav taws xob tab sis nws tau los ntawm lub nucleus, tsis yog sab nraud ntawm lub atom.

Tsis tas li ntawd, qhov loj ntawm beta particle yog dab tsi?

A beta particle (aka beta hluav taws xob) yog lub siab ceev electron lossis positron. Lawv pawg yog ~ 1/2000 amu.

Ib tug kuj yuav nug, uas yog hnyav tshaj alpha beta lossis gamma? Cov alpha particle yog qhov hnyav tshaj plaws. Nws yog tsim thaum cov khoom hnyav tshaj plaws lwj. Alpha thiab beta rays tsis yog nthwv dej.

Ib yam li ntawd, kwv yees li qhov loj thiab txheeb ze tus nqi ntawm beta particle yog dab tsi?

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 a pawg txog 1/2000th ntawm ib tug proton. Qhov no txhais tau tias beta hais yog tib yam li ib tug electron.

Dab tsi yog qhov txheeb ze ntawm alpha hluav taws xob?

Ib alpha particle ,cu ib pawg sib npaug li 7, 300 npaug ntawm ib qho hluav taws xob, poob nws lub zog dhau qhov luv luv. Txij li thaum 33.85 eV yuav tsum tau tsim ib khub electron, ib alpha particle (feem ntau 5 MeV ntawm lub zog) tuaj yeem tsim kwv yees li 7,400 electron khub hauv 1 micron (µm) ntawm lwj.

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