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Longitudinal relaxation time detection using a high- superconductive quantum interference device magnetometer
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10.1063/1.2767193
/content/aip/journal/jap/102/3/10.1063/1.2767193
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/3/10.1063/1.2767193
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The evolution of magnetization and the wave sequence during the SQUID NMR experiment. (a) The magnetization is nearly along the axis with the prepolarization field of along the axis and the measuring field along the direction; (b) the magnetization is along the axis after turn off the ; (c) a pulse field is applied to rotate the magnetization to direction; (d) the NMR signal is processed about the measuring field direction; and (e) the pulse sequences with , , and and the NMR signal as a function of time.

Image of FIG. 2.
FIG. 2.

(a) FID of the NMR signal of 20 ml of water in a lower measuring field of after 2500 averages. The corresponding NMR spectrum is shown in (b). The prepolarization is 10 mT, the polarizing time is 5 s, and the time delay is 0.1 s.

Image of FIG. 3.
FIG. 3.

The SNR and the linewidth of NMR spectrum as a function of the field strength of prepolarization field in a static magnetic field of .

Image of FIG. 4.
FIG. 4.

Normalized NMR intensity as a function of the polarizing duration time,

Image of FIG. 5.
FIG. 5.

Normalized NMR intensity as a function of the delay time, .

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/content/aip/journal/jap/102/3/10.1063/1.2767193
2007-08-08
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Longitudinal relaxation time detection using a high-Tc superconductive quantum interference device magnetometer
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/3/10.1063/1.2767193
10.1063/1.2767193
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