Sisitimu Yekuyedza yeLADP-2 yePulsed NMR

Tsananguro pfupi:

Pulsed Fourier inoshandura magnetic resonance inoshandisa pulsed RF field kuti ishande pa nucleus system kuti ione mhinduro ye nucleus system ku pulse, uye inoshandisa tekinoroji ye fast Fourier transform (FFT) kushandura time domain signal kuita frequency domain signal, iyo yakaenzana ne multiple single frequency continuous wave nuclear magnetic resonance spectrometers dzinofara panguva imwe chete, saka nuclear magnetic resonance phenomenon inogona kuonekwa munzvimbo yakakura, uye chiratidzo chakasimba. Parizvino, pulse method inoshandiswa muNMR spectrometers zhinji, nepo pulse method inoshandiswa muMRI.

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Ruzivo rweChigadzirwa

Matagi eChigadzirwa

Kuedza

1. Kunzwisisa dzidziso huru yemuviri uye maitiro ekuyedza ehurongwa hwePNMR. Dzidza kutsanangura zviitiko zvine chekuita nemuviri muPNMR uchishandisa modhi yevector yekare.

2. Dzidza kushandisa zviratidzo zve spin echo (SE) uye free induction decay (FID) kuyera T₂(nguva yekuzorora kwespin-spin). Ongorora simba remagineti akafanana pachiratidzo cheNMR.

3. Dzidza kuyera T₁(nguva yekuzorora kwe spin-lattice) uchishandisa reverse recovery.

4. Nzwisisa zvine hunhu nzira yekurerutsa, cherechedza mhedzisiro yemaion eparamagnetic panguva yekurerutsa kwenyukireya.

5. Chiyero T₂yemushonga we copper sulfate pahuwandu hwakasiyana. Sarudza hukama hwe T₂nekuchinja kwekutarisa.

6. Yera kuchinjika kwemakemikari emuenzaniso.

Magadzirirwo

Tsananguro	Magadzirirwo
Simba remumunda wekushandura simba	magetsi epamusoro 0.5 A, mutemo wemagetsi 0 - 6.00 V
Simba remunda wakafanana	magetsi epamusoro 0.5 A, mutemo wemagetsi 0 - 6.00 V
Kuwanda kweOscillator	20 MHz
Simba remagineti	0.470 T
Dhayamita yedanda remagineti	100 mm
Daro remagineti padanda	20 mm
Kubatana kwesimba remagineti	20 ppm (10 mm × 10 mm × 10 mm)
Tembiricha inodzorwa	36.500 °C
Kugadzikana kwemunda wemagineti	Kudziya kwemaawa mana kuti kugadzikiswe, Larmor frequency drift iri pasi pe5 Hz paminiti.

Rondedzero yeZvikamu

Tsananguro	Huwandu	Cherechedza
Chiyero Chekupisa Chinogara Chichiitika	1	kusanganisira magineti nemudziyo wekudzora tembiricha
Chikamu Chekutumira RF	1	kusanganisira simba rekushandisa modulation field
Chikamu Chekugamuchira Zviratidzo	1	kusanganisira simba remunda wakafanana uye kuratidzwa kwetembiricha
Tambo yeSimba	1
Waya dzakasiyana-siyana	12
Machubhu emuenzaniso	10
Bhuku reMirayiridzo	1