Inkqubo yovavanyo ye-LADP-1A ye-CW NMR – Umfanekiso oPhambili weModeli

Inkqubo yovavanyo ye-LADP-1A ye-CW NMR - Imodeli ePhambili

Inkcazo emfutshane:

I-Nuclear magnetic resonance (NMR) luhlobo lotshintsho lwe-resonance olubangelwa yi-electromagnetic wave kwintsimi ye-magnetic engaguqukiyo. Ukususela oko ezi zifundo zenziwa ngo-1946, iindlela kunye neendlela ze-nuclear magnetic resonance (NMR) ziye zaphuhliswa ngokukhawuleza kwaye zasetyenziswa kakhulu kuba zinokungena nzulu kwi-substance ngaphandle kokutshabalalisa isampuli, kwaye zinezibonelelo zokukhawuleza, ukuchaneka kunye nesisombululo esiphezulu. Kule mihla, ziye zangena kwi-physics ukuya kwi-chemistry, i-biology, i-geology, unyango, izixhobo kunye nezinye iinkalo, zidlala indima enkulu kuphando lwesayensi kunye nemveliso.

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Inkcazo

Inxalenye yokuzikhethela: Imitha yokuphindaphinda, i-oscilloscope yenxalenye ozilungiselele yona

Le nkqubo yovavanyo ye-continuous-wave nuclear magnetic resonance (CW-NMR) ine-magnet ephezulu ye-homogeneity kunye neyunithi yomatshini oyintloko. I-magnet esisigxina isetyenziselwa ukubonelela nge-magnetic field ephambili ebekwe yi-electromagnetic field ehlengahlengiswayo, eveliswa zi-coils ezimbini, ukuvumela ukulungiswa okuncinci kwi-magnetic field iyonke kunye nokubuyisela ukuguquguquka kwe-magnetic field okubangelwa kukutshintsha kobushushu.

Ngenxa yokuba kufuneka kuphela umbane omncinci wemagnetizing kwi-electromagnetic field ephantsi, ingxaki yokufudumeza kwenkqubo iyancitshiswa. Ngaloo ndlela, inkqubo ingasetyenziswa ngokuqhubekayo kangangeeyure ezininzi. Sisixhobo esifanelekileyo sovavanyo kwiilabhoratri zefiziksi eziphambili.

Uvavanyo

1. Ukujonga imeko ye-nuclear magnetic resonance (NMR) yee-hydrogen nuclei emanzini kunye nokuthelekisa impembelelo yee-paramagnetic ions;

2. Ukulinganisa iiparameter ze-hydrogen nuclei kunye ne-fluorine nuclei, ezifana ne-spin magnetic ratio, i-Lande g factor, njl.njl.

Iinkcukacha

Inkcazo	Inkcazo
I-nucleus elinganisiweyo	H kunye no-F
I-SNR	> 46 dB (H-nucleus)
I-frequency ye-Oscillator	Ukusuka kwi-17 MHz ukuya kwi-23 MHz, iyakwazi ukulungelelaniswa rhoqo
Indawo yepali yemagnethi	Ububanzi: 100 mm; isithuba: 20 mm
Ukuphakama kwesiginali ye-NMR (incopho ukuya kwincopho)	> 2 V (H-nuclei); > 200 mV (F-nuclei)
Ukufana kwentsimi yamagnetic	ingcono kune-8 ppm
Uluhlu lohlengahlengiso lwentsimi ye-electromagnetic	60 Gauss
Inani lamaza e-coda	> 15