LADP-1A Lub Tshuab Sim ntawm CW NMR - Qauv Qib Siab Duab Tshwj Xeeb

LADP-1A Lub Tshuab Sim ntawm CW NMR - Qauv Siab Tshaj Plaws

Kev Piav Qhia Luv:

Nuclear magnetic resonance (NMR) yog ib hom kev hloov pauv resonance uas tshwm sim los ntawm electromagnetic nthwv dej hauv lub zog magnetic tas li. Txij li thaum cov kev tshawb fawb no tau ua tiav xyoo 1946, cov txheej txheem thiab cov txheej txheem ntawm nuclear magnetic resonance (NMR) tau tsim kho sai thiab siv dav vim tias lawv tuaj yeem nkag mus tob rau hauv cov khoom yam tsis rhuav tshem cov qauv, thiab muaj qhov zoo ntawm kev ceev ceev, qhov tseeb thiab kev daws teeb meem siab. Niaj hnub no, lawv tau nkag mus los ntawm physics mus rau chemistry, biology, geology, kev kho mob, cov ntaub ntawv thiab lwm yam kev qhuab qhia, ua lub luag haujlwm tseem ceeb hauv kev tshawb fawb thiab kev tsim khoom.

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Kev piav qhia

Qhov xaiv tau: Lub ntsuas zaus, tus kheej npaj qhov oscilloscope

Lub tshuab sim no ntawm kev sib nqus sib nqus nuclear sib txuas (CW-NMR) muaj cov hlau nplaum sib xws thiab lub tshuab tseem ceeb. Lub hlau nplaum tas mus li yog siv los muab lub zog sib nqus thawj zaug uas muaj lub zog sib nqus hloov kho tau, uas tsim los ntawm ob lub kauj, kom tso cai rau kev hloov kho zoo rau tag nrho lub zog sib nqus thiab los them rau qhov kev hloov pauv ntawm lub zog sib nqus uas tshwm sim los ntawm kev hloov pauv kub.

Vim tias tsuas yog xav tau me me xwb rau qhov muaj hluav taws xob tsawg, qhov teeb meem cua sov ntawm lub kaw lus raug txo qis. Yog li, lub kaw lus tuaj yeem ua haujlwm tas li rau ob peb teev. Nws yog ib qho cuab yeej sim zoo tshaj plaws rau cov chaw kuaj mob physics siab heev.

Kev sim

1. Yuav kom soj ntsuam qhov xwm txheej ntawm lub zog sib nqus ntawm lub zog (NMR) ntawm cov hydrogen nuclei hauv dej thiab piv rau qhov cuam tshuam ntawm cov paramagnetic ions;

2. Txhawm rau ntsuas cov kev ntsuas ntawm hydrogen nuclei thiab fluorine nuclei, xws li spin magnetic ratio, Lande g factor, thiab lwm yam.

Cov Lus Qhia Tshwj Xeeb

Kev piav qhia	Cov Lus Qhia Tshwj Xeeb
Ntsuas lub nucleus	H thiab F
SNR	> 46 dB (H-nuclei)
zaus oscillator	17 MHz txog 23 MHz, hloov kho tas li
Thaj tsam ntawm lub ncej hlau nplaum	Txoj kab uas hla: 100 hli; qhov nrug: 20 hli
NMR teeb liab amplitude (nce mus rau ncov)	> 2 V (H-nuclei); > 200 mV (F-nuclei)
Kev sib npaug ntawm lub zog sib nqus	zoo dua 8 ppm
Kev kho qhov ntau ntawm lub zog hluav taws xob	60 Gauss
Tus naj npawb ntawm cov nthwv dej coda	> 15