LADP-2 Experimental System of Pulsed NMR Chithunzi Chowonetsedwa

LADP-2 Experimental System ya Pulsed NMR

Kufotokozera Kwachidule:

Pulsed Fourier amasintha mphamvu ya nyukiliya ya nyukiliya amagwiritsa ntchito pulsed RF field kuti agwiritse ntchito zida za nyukiliya kuti ayang'ane momwe mphamvu ya nyukiliya ikuyankhira, ndipo imagwiritsa ntchito teknoloji yofulumira ya Fourier transform (FFT) kuti isinthe chizindikiro cha nthawi kuti chikhale chizindikiro cha nyukiliya. zofanana ndi ma frequency angapo opitilira mafunde a nyukiliya amasangalatsidwa nthawi yomweyo, kotero kuti chodabwitsa cha nyukiliya chimatha kuwonedwa pagulu lalikulu, ndipo chizindikirocho ndi chokhazikika Pakali pano, njira yakugunda imagwiritsidwa ntchito m'ma spectrometer ambiri a NMR. Njira ya pulse imagwiritsidwa ntchito mu MRI.

Titumizireni imelo

Tsatanetsatane wa Zamalonda

Zogulitsa Tags

Zoyesera

1. Kumvetsetsa chiphunzitso chakuthupi ndi kachitidwe koyesera kachitidwe ka PNMR.Phunzirani kufotokozera zochitika zokhudzana ndi thupi mu PNMR pogwiritsa ntchito mtundu wakale wa vector.

2. Phunzirani kugwiritsa ntchito zizindikiro za spin echo (SE) ndi kuwonongeka kwaufulu (FID) kuti muyese T₂(nthawi yopumula ya spin-spin).Unikani mphamvu ya maginito homogeneity pa chizindikiro cha NMR.

3. Phunzirani kuyeza T₁(nthawi yopumula ya spin-lattice) pogwiritsa ntchito kubwezeretsanso.

4. Kumvetsetsa bwino njira yopumula, yang'anani zotsatira za ma ion paramagnetic pa nthawi yopumula ya nyukiliya.

5. Yezerani T₂ya mkuwa sulphate njira pa ndende zosiyanasiyana.Dziwani mgwirizano wa T₂ndi kusintha kwa maganizo.

6. Yezerani kusamuka kwachibale kwachitsanzo.

Zofotokozera

Kufotokozera	Zofotokozera
Kupereka mphamvu kwa gawo losinthira	pazipita panopa 0.5 A, voteji malamulo 0 - 6.00 V
Kupereka mphamvu ya homogenous munda	pazipita panopa 0.5 A, voteji malamulo 0 - 6.00 V
Mafupipafupi a oscillator	20 MHz
Mphamvu yamagetsi yamagetsi	0.470 T
Magnetic pole diameter	100 mm
Maginito pole mtunda	20 mm
Magnetic field homogeneity	20 ppm (10 mm × 10 mm × 10 mm)
Kutentha koyendetsedwa	36.500 °C
Kukhazikika kwa maginito	Maola a 4 otentha kuti akhazikike, Larmor frequency amayenda zosakwana 5 Hz pamphindi.

Mndandanda wa Zigawo

Kufotokozera	Qty	Zindikirani
Constant Temperature Unit	1	kuphatikiza maginito ndi chipangizo chowongolera kutentha
RF Transmitting Unit	1	kuphatikizapo magetsi a modulation field
Chigawo Cholandira Chikwangwani	1	kuphatikizapo mphamvu ya homogenous munda ndi kutentha anasonyeza
Chingwe cha Mphamvu	1
Zosiyanasiyana Chingwe	12
Zitsanzo za Machubu	10
Buku Lophunzitsira	1