Inkqubo ye-LADP-1 yovavanyo ye-CW NMR-Imodeli ePhambili
I-Nuclear magnetic resonance (NMR) luhlobo lotshintsho lwento ebangelwa liliza lombane lombane kumhlaba wamagnetic. Okoko ezi zifundo zenziwa ngo-1946, iindlela kunye nobuchule benyukliya (i-NMR) ziye zaphuhliswa ngokukhawuleza kwaye zisetyenziswa ngokubanzi kuba zinokungena nzulu kwinto ngaphandle kokutshabalalisa isampulu, kwaye zinezibonelelo zokukhawuleza, ukuchaneka kunye nokuphakama isisombululo. Kule mihla, bangene kwi-physics baya kwi-chemistry, i-biology, i-geology, unyango, izixhobo kunye nolunye uqeqesho, badlala indima enkulu kuphando lwenzululwazi kunye nemveliso.
Inkcazo
Inxalenye ongayikhetha: Imitha yokuhamba rhoqo, indawo elungiselelwe wena
Le nkqubo yovavanyo lokuqhubeka kwamaza e-magnetic resonance (CW-NMR) aqukethe umazibuthe ophakamileyo kunye neyunithi yomatshini ophambili. Umazibuthe osisigxina usetyenziselwa ukubonelela ngemagnethi ephambili ephakanyiswe yintsimi yombane ehlengahlengiswayo, eveliswe zizixhobo zekhoyili, ukuvumela uhlengahlengiso oluhle kumhlaba wonke wemagnethi kunye nokuhlawulela ukuhla kwamandla emagnethi abangelwa kukutshintsha kweqondo lobushushu.
Ngenxa yokuba yimagnethi yokutsala encinci kuphela efunekayo kumhlaba ophantsi wombane, ingxaki yokufudumeza yenkqubo incitshisiwe. Yiyo loo nto inkqubo inokuqhutywa ngokuqhubekekayo iiyure ezininzi. Isixhobo esilungileyo sokulinga kwiilabhoratri eziphambili ze-physics.
Ukucaciswa
|
Inkcazo |
Ukucaciswa |
| Umyinge olinganisiweyo | H kunye noF |
| I-SNR | > 46 dB (H-nuclei) |
| Ukuhamba rhoqo kwe-Oscillator | I-17 MHz ukuya kwi-23 MHz, eqhubeka ihlengahlengiswa |
| Indawo ipali umazibuthe | Ububanzi: 100 mm; izithuba: 20 mm |
| Ukuphakama kwesiginali yeNMR (incopho yencopho) | > 2 V (H-nuclei); > I-200 mV (F-nuclei) |
| Ukufana kwe-magnetic field | bhetele kune-8 ppm |
| Uluhlu lohlengahlengiso lwentsimi ye-electromagnetic | Ngama-60 kaGauss |
| Inani lamaza e-coda | > 15 |
Uvavanyo
1. Ukujonga amandla enyukliya (i-NMR) ye-hydrogen nuclei emanzini kunye nokuthelekisa iimpembelelo ze-ion paramagnetic;
2. Ukulinganisa iiparameter ze-hydrogen nuclei kunye ne-fluorine nuclei, enje nge-spin magnetic ratio, i-Lande g factor, njl.
