Pūnaha Whakamātautau LADP-2 o te Pulsed NMR Whakaahua Matua

Pūnaha Whakamātautau LADP-2 o te NMR Paoro

Whakaahuatanga Poto:

Ka whakamahia e te whakawhiti Fourier pāorooro karihi te mara RF pāorooro hei mahi i runga i te pūnaha karihi hei tirotiro i te urupare a te pūnaha karihi ki te pāorooro, ā, ka whakamahia te hangarau whakawhiti Fourier tere (FFT) hei huri i te tohu rohe wā hei tohu rohe auau, he rite ki te maha o ngā inenga pāorooro karihi auau kotahi e whakaohokia ana i te wā kotahi, kia kitea ai te āhuatanga pāorooro karihi i roto i te whānuitanga whānui, ā, he pumau te tohu. I tēnei wā, ko te tikanga pāorooro te mea e whakamahia ana i roto i te nuinga o ngā inenga NMR, ko te tikanga pāorooro ia e whakamahia ana i roto i te MRI.

Tukua mai he īmēra ki a mātou

Taipitopito Hua

Ngā Tohu Hua

Ngā whakamātautau

1. Kia mārama ki te ariā ā-tinana taketake me te whirihoranga whakamātautau o tētahi pūnaha PNMR. Ako ki te whakamārama i ngā āhuatanga ā-tinana e pā ana i roto i te PNMR mā te whakamahi i te tauira whārite matarohia.

2. Akohia te whakamahi i ngā tohu o te echo hurihuri (SE) me te pirau whakaawe kore utu (FID) hei ine i te T₂(wā whakangā o te takahuri-takahuri). Tātarihia te awe o te ōritetanga o te papa aukume ki te tohu NMR.

3. Akohia te ine i te T₁(wā whakangā hurihuri-whakarewa) mā te whakamahi i te whakaora whakamuri.

4. Māramahia te tikanga whakangā, tirohia te pānga o ngā katote paramagnetic ki te wā whakangā karihi.

5. Inehia te T₂o te otinga parahi whanariki i ngā kukū rerekē. Whakatauhia te whanaungatanga o T₂me te panoni o te kukū.

6. Inehia te nekehanga matū ōrite o te tauira.

Ngā Whakatakotoranga

Whakaahuatanga	Ngā Whakatakotoranga
Pūtake hiko o te mara whakarerekētanga	iahiko mōrahi 0.5 A, te whakahaere ngaohiko 0 – 6.00 V
Pūtake hiko o te mara ōrite	iahiko mōrahi 0.5 A, te whakahaere ngaohiko 0 – 6.00 V
Auautanga o te oscillator	20 MHz
Te kaha o te papa aukume	0.470 T
Te whānui o te pou aukume	100 mm
Te tawhiti o te pou aukume	20 mm
Te ōritetanga o te papa aukume	20 ppm (10 mm × 10 mm × 10 mm)
Te pāmahana whakahaere	36.500°C
Te pumau o te papa aukume	Kia 4 hāora te mahana hei whakau, kia iti iho i te 5 Hz te auau o te rerenga o Larmor i te meneti.

Rārangi Wāhanga

Whakaahuatanga	Tau	Tuhipoka
Wāhanga Pāmahana Pūmau	1	tae atu ki te aukume me te taputapu whakahaere pāmahana
Wāhanga Tuku RF	1	tae atu ki te tuku hiko o te mara whakarerekētanga
Wāhanga Whiwhi Tohu	1	tae atu ki te tuku hiko o te mara ōrite me te whakaaturanga pāmahana
Taura Hiko	1
Taura rerekē	12
Ngā Ngongo Tauira	10
Pukapuka Whakaako	1