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LADP-1 Hoʻokolohua Hoʻokolohua o CW NMR - Ke Ana Hoʻohālikelike

Hōʻike Pōkole:


ʻIke kikoʻī

Nā huahana huahana

ʻO ka resonance ʻume mākenēkiu (NMR) kahi ʻano hoʻololi hoʻololi resonance i hoʻokumu ʻia e ka nalu electromagnetic i loko o ka māla magnetika mau. Ma muli o ka hoʻokō ʻia ʻana o kēia mau noiʻi ʻana i ka makahiki 1946, ua hoʻomohala koke ʻia nā ʻano hana a me nā ʻenehana o ka nuklei resonance (NMR) no ka mea hiki iā lākou ke komo hohonu i ka mea me ka luku ʻole ʻia o ka hāpana, a loaʻa nā pōmaikaʻi o ka wikiwiki, pololei a kiʻekiʻe. olelo hooholo. I kēia mau lā, ua komo lākou mai ka physics i ka chemistry, biology, geology, lāʻau lapaʻau, nā mea a me nā ʻano hoʻopaʻi ʻē aʻe, e hoʻokani nui nei i ka noiʻi ʻepekema a me ka hana ʻana.

Wehewehe 

Mahele koho: Mika pinepine, hoʻomākaukau pono ʻia kahi oscilloscope

ʻO kēia ʻōnaehana hoʻokolohua o ka resonance ʻume mākenēki nalu neʻe mau (CW-NMR) me kahi magnet homogeneity kiʻekiʻe a me kahi mīkini mīkini nui. Hoʻohana ʻia kahi Mākēneki paʻa e hoʻolako i kahi kahua magnetic mua i hoʻopili ʻia e kahi electromagnetic field i hoʻonohonoho ʻia, i hana ʻia e nā pālua, e ʻae ai i kahi hoʻoponopono maikaʻi i ka nui o ka māno o ka magnet and to compensate magnetic field fluctuations i hoʻokumu ʻia e nā hoʻololi o ka mahana.

No ka mea e pono ai i kēia manawa ka magnetizing liʻiliʻi no ka liʻiliʻi electromagnetic kahua, hoʻemi ʻia ka pilikia hoʻomehana o ka ʻōnaehana. No laila, hiki ke hoʻohana mau ʻia ka ʻōnaehana no kekahi mau hola. He mea pono hoʻokolohua kūpono ia no nā keʻena hoʻokolohua physics kiʻekiʻe.

Hoakaka

Wehewehe

Hoakaka

Nukona i ana ʻia H a me F
SNR > 46 dB (H-nuclei)
ʻO ke alapine oscillator 17 MHz a 23 MHz, hoʻoneʻe mau
Kahi o ka pou magnet Pakuhi: 100 mm; ākea: 20 mm
NMR hōʻailona amplitude (piko i ka piko) > 2 V (H-nuclei); > 200 mV (F-nuclei)
Homogeneity o ka mākēneki kahua ʻoi aku ma mua o 8 ppm
Hoʻololi pae o ka electromagnetic kahua 60 Gauss
Ka helu o nā nalu coda > 15

Hoʻokolohua

1. E nānā i ka nukelea resonance (NMR) hanana o ka hydrogen nuclei i loko o ka wai a hoʻohālikelike i ka hopena o nā ion paramagnetic;

2. E ana i nā palena o ka hydrogen nuclei a me ka fluorine nuclei, e like me ka spin magnetic ratio, Lande g factor, etc.

 


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