NMR probe head with cryogenically cooled preampifiers

Details NMR probe head with cryogenically cooled preampifiers NMR probe head with cryogenically cooled preampifiers

1996-12-03

1998-09-29

Arana, Louis M.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324322, G01N 300

Patent

active

058149929

ABSTRACT:
A nuclear magnetic resonance (NMR) probe head for use in a room temperature bore of a superconducting NMR magnet cryostat for investigation of generally room temperature samples comprises a radio frequency (RF) receiving coil, a receiving coil preamplifier connected to the receiving coil, at least one additional coil and cryogenic means connected to the RF receiving coil, to the receiving coil preamplifier, and to the at least one additional coil for keeping the RF receiving coil, the preamplifier and the additional coil at a cryogenic temperature. The apparatus is improved in that at least one additional preamplifier is connected to the additional coil and to the cryogenic means the cryogenic means keeping the additional preamplifier at a cryogenic temperature. The apparatus exhibits improved performance and increased flexibility.

REFERENCES:
patent: 4051429 (1977-09-01), Imanari et al.
patent: 5166620 (1992-11-01), Panosh
patent: 5247256 (1993-09-01), Marek
patent: 5258710 (1993-11-01), Black
patent: 5689187 (1997-11-01), Marek et al.
The NMR Newsletter, ed. Shapiro, Mar. 1995.
"A High-Resolution NMR Probe in Which the Coil and Preamplifier are Cooled with Liquid Helium" by P. Styles et al. In: Journal of Magnetic Resonance, vol. 60, 1984, pp. 397-404.
"Thin Film High Temperature Superconductor RF Coil and Cryogenic Preamplifier for Low Field MRI" by J.G. Van Heteren et al. In: IEEE Conference, Record, Nuclear Science Symposium & Medical Imaging Conference, vol. 3, 1993, San Francisco, pp. 1708-1712.
"An Improved Cryogenically Cooled Probe for High-Resolution NMR" In: Journal of Magnetic Resonance, vol. 84, 1989, p. 376-378.
Superconductivity News, vol. 7, No. 18, 1995, p. 2. The NMR Newsletter, ed.Shapiro, Mar. 1995.

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