PEB-72
Ib qho hluav taws xob yog ib yam ntawm cov khoom siv hluav taws xob uas muaj qee qhov loj thiab tsis zoo. Nws tuaj yeem ua ob hom kev txav; ib qho yog txav ntawm lub orbit nyob ib ncig ntawm lub nucleus, thiab lwm qhov yog tig rau ntawm ib qho axis hla nws qhov chaw. Txij li thaum lub zog ntawm electrons tsim lub sijhawm, cov dej ntws thiab lub sijhawm sib nqus yog tsim thaum lub sijhawm txav. Nyob rau hauv daim ntawv thov tas li magnetic teb H, lub sij hawm sib nqus ntawm electron ua zoo li ib tug me me pas nrig los yog rab koob. Txij li thaum tus spin quantum tooj ntawm lub electron yog 1/2, lub electron tsuas muaj ob orientations nyob rau hauv lub sab nraud magnetic teb: ib tug yog parallel rau H, coj mus rau theem qis zog, lub zog yog -1/2gβH; ib qho yog antiparallel rau H, sib xws rau qib siab zog, lub zog yog + 1/2gβH, thiab lub zog sib txawv ntawm ob qib yog gβH. Yog hais tias nyob rau hauv cov kev taw qhia perpendicular rau H, lub electromagnetic nthwv dej ntawm zaus v yog ntxiv kom tau raws li cov mob ntawm hv = gβH, lub low-zog theem electrons nqus cov electromagnetic yoj lub zog thiab dhia mus rau lub zog siab dua, uas yog hu ua hluav taws xob paramagnetic resonance. .
① Cov khoom uas tsis muaj hluav taws xob tsis sib xws (lossis ib qho hluav taws xob) tshwm sim hauv cov molecular orbital. Xws li cov dawb radicals (molecules uas muaj ib qho hluav taws xob ib leeg), dibasic thiab polybasic (molecules uas muaj ob lossis ntau dua ib qho electrons), triplet molecules (tseem muaj ob lub electrons hauv molecular orbital, tab sis lawv nyob deb heev, tsis ntev los no, muaj zog heev. sib nqus sib nqus ntawm ib leeg, uas txawv ntawm ob lub hauv paus) thiab lwm yam.
② Cov khoom uas muaj ib qho hluav taws xob tshwm sim hauv atomic orbitals, xws li alkali hlau atoms, hloov hlau ions (xws li pab pawg hlau, palladium pawg, thiab platinum pawg ions, uas nyob rau hauv lem muaj underfilled 3d, 4d, 5d plhaub), tsis tshua muaj ntiaj teb hlau ions (Nrog underfilled 4f plhaub) thiab lwm yam.
1, Sib nqus teb ntau: 0 ~ 18000 Gauss tsis tu ncua kho
2, Ncej taub hau nrug: 72mm
3, Txoj kev txias: dej txias
4, Qhov hnyav tag nrho: <2000kg
Yuav customized raws li tus neeg yuav tsum tau muaj
