Low frequency NMR polarimeter for hyperpolarized gases.
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.
Saam
B T
BT
Department of Physics, Washington University, St. Louis, Missouri, 63130-4899, USA.
Conradi
M S
MS
D004867:Equipment Design; D005740:Gases / Q000032:analysis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation* / Q000379:methods; D011048:Polarography / Q000295:instrumentation* / Q000379:methods
D005740:Gases