Pulsed nuclear magnetic resonance spectrometers

Details Pulsed nuclear magnetic resonance spectrometers Pulsed nuclear magnetic resonance spectrometers

1978-07-13

1980-03-11

Tokar, M.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01R 3308

Patent

active

041930240

ABSTRACT:
A pulsed N.M.R. spectrometer employing a highly stable magnet (e.g. a superconducting magnet) has a field-frequency lock which is operative to correct the intensity of the magnetic field only at discrete intervals. The lock operates on the principles of a phase locked loop, and utilizes the free induction decay of the magnetic resonance of an appropriate nuclear species incorporated in a reference sample which is subjected to the magnetic field.

REFERENCES:
patent: 3609519 (1971-09-01), Seki
patent: 3774103 (1973-11-01), Laukien
patent: 4110681 (1978-08-01), Hofer

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