Low Frequency NMR Polarimeter for Hyperpolarized Gases

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An inexpensive and self-contained apparatus for pulsed NMR at 30–250 kHz is described. The intended application is monitoring of the spin polarization of rare gas nuclei in a laser-polarizing apparatus in fields of order 30 G. In addition, the device provides a convenient method for following the polarization decay during storage and transport. Some of the features are a flexible pulse generator, splitting of transmitter RF cycles by the RF gate, a Q switch, and a wide range of receiver gains.

Document Type: Research Article

Affiliations: Department of Physics, Washington University, St. Louis, Missouri, 63130-4899

Publication date: September 1, 1998

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