Uhlelo Lokuhlola lwe-LADP-2 lwe-Pulsed NMR

Incazelo emfushane:

I-Pulsed Fourier transform nuclear magnetic resonance isebenzisa insimu ye-pulsed RF ukuze isebenze ohlelweni lwenuzi ukuze ibone impendulo yesistimu yenuzi ku-pulse, futhi isebenzisa ubuchwepheshe be-fast Fourier transform (FFT) ukuguqula isignali yesizinda sesikhathi ibe isignali yesizinda semvamisa, okulingana namagagasi amaningi e-single frequency continuous wave. Ama-spectrometer e-nuclear magnetic resonance avuselelwa ngesikhathi esisodwa, ngakho-ke isenzakalo se-nuclear magnetic resonance singabonakala ebangeni elikhulu, futhi isignali izinzile. Njengamanje, indlela ye-pulse isetshenziswa kuma-spectrometer amaningi e-NMR, kuyilapho indlela ye-pulse isetshenziswa ku-MRI.

Sithumelele i-imeyili

Imininingwane Yomkhiqizo

Amathegi Omkhiqizo

Ukuhlolwa

1. Qonda inkolelo-mbono eyisisekelo yomzimba kanye nokuhlelwa kokuhlola kohlelo lwe-PNMR. Funda ukuchaza izenzakalo zomzimba ezihlobene ku-PNMR usebenzisa imodeli yevektha yakudala.

2. Funda ukusebenzisa izimpawu ze-spin echo (SE) kanye ne-free induction decay (FID) ukukala i-T₂(isikhathi sokuphumula se-spin-spin). Hlaziya ithonya lokulingana kwensimu yamagnetic kusignali ye-NMR.

3. Funda ukukala u-T₁(isikhathi sokuphumula se-spin-lattice) kusetshenziswa ukululama okuphambene.

4. Qonda ngendlela efanele indlela yokuphumula, qaphela umphumela wama-ion e-paramagnetic esikhathini sokuphumula senuzi.

5. Isilinganiso T₂yesisombululo se-copper sulfate ngamanani ahlukene. Thola ubudlelwano be-T₂ngokushintsha kokugxilisa ingqondo.

6. Linganisa ukufuduka kwamakhemikhali okuhlobene kwesampula.

Imininingwane

Incazelo	Imininingwane
Ukunikezwa kwamandla kwensimu yokuguqula	umkhawulo wamanje ongu-0.5 A, ukulawulwa kwe-voltage okungu-0 – 6.00 V
Ukunikezwa kwamandla kwensimu efanayo	umkhawulo wamanje ongu-0.5 A, ukulawulwa kwe-voltage okungu-0 – 6.00 V
Imvamisa ye-oscillator	20 MHz
Amandla ensimu yamagnetic	0.470 T
Ububanzi besigxobo sikamazibuthe	100 mm
Ibanga le-magnetic pole	20 mm
Ukulingana kwensimu yamagnetic	20 ppm (10 mm × 10 mm × 10 mm)
Izinga lokushisa elilawulwayo	36.500 °C
Ukuqina kwensimu yamagnetic	Amahora ama-4 afudumele ukuze kuqiniswe, imvamisa ye-Larmor idlula ngaphansi kwama-5 Hz ngomzuzu.

Uhlu Lwezingxenye

Incazelo	Ubuningi	Inothi
Iyunithi Yokushisa Engaguquki	1	kufaka phakathi i-magnet kanye nedivayisi yokulawula izinga lokushisa
Iyunithi Yokudlulisa i-RF	1	kufaka phakathi ukunikezwa kwamandla kwensimu yokuguqula
Iyunithi Yokwamukela Isignali	1	kufaka phakathi ukunikezwa kwamandla kwensimu efanayo kanye nokubonisa izinga lokushisa
Intambo Yamandla	1
Ikhebula Elihlukahlukene	12
Amashubhu Esampula	10
Incwadi Yemiyalelo	1