EPR-60
Electron paramagnetic resonance (EPR) yog ib yam khoom siv sib nqus resonance thev naus laus zis los ntawm lub sijhawm sib nqus ntawm cov tshuab hluav taws xob tsis sib thooj. Nws tuaj yeem siv los ua kom muaj txiaj ntsig zoo thiab muaj nuj nqis txhawm rau txheeb xyuas cov khoom siv hluav taws xob uas tsis muaj nyob hauv cov atoms lossis cov molecules ntawm cov tshuaj, thiab tshawb xyuas lawv. Cov yam ntxwv yam ntxwv ntawm ib puag ncig puag ncig. Rau cov dawb radicals, lub sijhawm sib nqus sib nqus yuav luag tsis muaj qhov cuam tshuam, thiab feem ntau ntawm tag nrho lub sijhawm sib nqus (siab dua 99%) ua rau lub tshuab hluav taws xob tig, yog li lub tshuab hluav taws xob paramagnetic resonance tseem hu ua "electron spin resonance" (ESR).
Electron paramagnetic resonance tau pom thawj zaug los ntawm yav dhau los Soviet physicist E · K · Zavois xyoo 1944 los ntawm MnCl2, CuCl2 thiab lwm yam ntsev ntsev paramagnetic. Thawj tus kws kho mob tau siv cov txheej txheem no los kawm txog cov khoom siv hluav taws xob, cov qauv siv lead ua, lub sijhawm dipole, thiab cov qauv txheej txheem ntawm qee qhov nyuaj. Raws li cov txiaj ntsig ntawm kev ntsuas hluav taws xob paramagnetic resonance ntsuas, cov kws kho mob tau hais meej txog cov tshuaj sib txuas thiab cov khoom siv hluav taws xob sib faib hauv cov organic sib txuas, nrog rau ntau yam teeb meem cuam tshuam nrog cov txheej txheem tshuaj tiv thaiv. American B. Commoner li al. qhia cov tshuab hluav taws xob paramagnetic resonance thev naus laus zis rau thaj tsam ntawm biology thawj zaug hauv xyoo 1954. Lawv tau soj ntsuam pom tias muaj cov dawb radicals nyob hauv qee yam khoom siv cog thiab tsiaj. Txij li xyoo 1960, vim kev txhim kho cov cuab yeej txuas ntxiv mus thiab kev hloov pauv tas li ntawm thev naus laus zis, tshuab hluav taws xob paramagnetic resonance thev naus laus zis tau siv hauv kev siv lub cev, lub tshuab hluav taws xob ib leeg, cov tshuaj lom neeg organic, tshuaj lom neeg nyuaj, tshuaj lom hluav taws xob, tshuaj lom neeg siv tshuaj lom neeg, tshuaj lom neeg hauv hiav txwv, catalysts, biology, thiab biology. Nws tau siv dav hauv ntau thaj chaw xws li kev siv tshuaj lom neeg, tshuaj, kev tshawb fawb ib puag ncig, thiab kev tshawb fawb geological.
Nws feem ntau yog siv rau kev kuaj pom cov dawb radicals thiab paramagnetic hlau ions thiab lawv cov sib txuas kom tau txais cov qauv thiab cov ntaub ntawv muaj pes tsawg leeg. Piv txwv li: ntsuas qhov sib nqus ua rau muaj zog ntawm paramagnets, kawm txog cov yeeb yaj kiab sib nqus sib nqus, ua hluav taws xob hauv cov hlau lossis cov khoom siv hluav taws xob, qee qhov tsis zoo hauv lub lattice hauv cheeb tsam hauv cov khib nyiab, hluav taws xob puas tsuaj thiab hloov hluav taws xob, ultraviolet hluav taws xob luv luv nyob hauv cov organic dawb radicals. txheej txheem cov tshuaj tiv thaiv, tus cwj pwm ntawm cov dawb radicals hauv kev xeb, cov txheej txheem ntawm cov hlau sib xyaw hauv kev sib koom ua ke, lub zog ua kom muaj zog ntawm tib neeg cov plaub hau dawb radicals, kev sib raug zoo ntawm cov dawb radicals hauv cov nqaij mos ntawm tes thiab kab mob, thiab cov txheej txheem ntawm ib puag ncig cov pa phem.
1, Kev sib nqus sib nqus ntau yam: 0 ~ 7000Gauss kho tsis tu ncua
2, Lub taub hau sib nrug ： 60mm
3, Txoj kev txias ： dej txias
4, Qhov hnyav tag nrho ： <500kg
Tau customized raws li tus neeg xav tau kev pab
