PEB-60
Electron paramagnetic resonance (EPR) yog ib hom kev sib nqus resonance thev naus laus zis los ntawm lub sijhawm sib nqus ntawm cov hluav taws xob tsis sib xws. Nws tuaj yeem siv los ua kom muaj txiaj ntsig zoo thiab muaj nuj nqis txheeb xyuas cov hluav taws xob tsis sib xws uas muaj nyob hauv cov atoms lossis molecules ntawm cov khoom, thiab tshawb xyuas lawv. Cov yam ntxwv ntawm cov yam ntxwv ntawm ib puag ncig ib puag ncig. Rau cov dawb radicals, lub orbital sib nqus lub sij hawm yuav luag tsis muaj kev cuam tshuam, thiab feem ntau ntawm tag nrho lub sij hawm sib nqus (ntau tshaj 99%) ua rau lub electron spin, yog li electron paramagnetic resonance kuj hu ua "electron spin resonance" (ESR).
Electron paramagnetic resonance yog thawj zaug pom los ntawm yav dhau los Soviet physicist E·K·Zavois xyoo 1944 los ntawm MnCl2, CuCl2 thiab lwm yam ntsev paramagnetic. Physicists thawj zaug siv cov txheej txheem no los kawm txog cov qauv hluav taws xob, cov qauv siv lead ua, lub sijhawm dipole, thiab cov qauv molecular ntawm qee cov atoms complex. Raws li cov txiaj ntsig ntawm Electron Cov ntsuas hluav taws xob rov qab ua rau cov tshuaj lom neeg thiab hluav taws xob tshem tawm cov teeb meem hauv paus ua ke, nrog rau ntau cov teeb meem cuam tshuam nrog cov tshuaj tiv thaiv kev ua haujlwm. American B. Commoner et al. tau tshaj tawm electron paramagnetic resonance thev naus laus zis rau thaj chaw ntawm biology thawj zaug hauv xyoo 1954. Lawv tau pom tias muaj cov dawb radicals hauv qee cov khoom siv cog thiab tsiaj. Txij li xyoo 1960, vim muaj kev txhim kho txuas ntxiv ntawm cov cuab yeej thiab cov thev naus laus zis tsis tu ncua, electron paramagnetic resonance thev naus laus zis tau siv hauv physics, semiconductors, organic chemistry, complex chemistry, radiation chemistry, chemical engineering, marine chemistry, catalysts, biology, thiab biology. Nws tau dav siv nyob rau hauv ntau yam xws li chemistry, tshuaj, ib puag ncig kev tshawb fawb, thiab geological prospecting.
Nws yog tsuas yog siv rau kev tshawb nrhiav cov dawb radicals thiab paramagnetic hlau ions thiab lawv cov tebchaw kom tau txais cov qauv thiab cov ntaub ntawv muaj pes tsawg leeg. Piv txwv li: ntsuas cov magnetic susceptibility ntawm paramagnets, kev kawm ntawm magnetic nyias films, ua electrons nyob rau hauv cov hlau los yog semiconductors, ib co lub zos lattice defects nyob rau hauv cov khib nyiab, hluav taws xob puas thiab hluav taws xob hloov, ultraviolet hluav taws xob luv luv-nyob organic dawb radicals Qhov xwm ntawm electrochemical. Cov txheej txheem tshuaj tiv thaiv, tus cwj pwm ntawm cov dawb radicals nyob rau hauv corrosion, cov qauv ntawm cov hlau complexes nyob rau hauv kev sib koom ua ke chemistry, lub zog saturation point ntawm tib neeg cov plaub hau dawb radicals, kev sib raug zoo ntawm dawb radicals nyob rau hauv cov ntaub so ntswg ntawm tes thiab kab mob, thiab lub mechanism ntawm ib puag ncig muaj kuab paug.
1, Sib nqus teb ntau yam: 0 ~ 7000Gauss tsis tu ncua adjustable
2, Ncej taub hau nrug: 60mm
3, Txoj kev txias: dej txias
4, Qhov hnyav tag nrho: <500kg
tuaj yeem kho raws li cov neeg siv khoom xav tau
