Gyromagnetic resonance methods and apparatus

Claim 1

A GYROMAGNETIC RESONANCE SPECTROMETER APPARATUS INCLUDING: A MICROWAVE BRIDGE NETWORK; SAID BRIDGE NETWORK INCLUDING A MEASURING ARM HAVING A CAVITY RESONATOR DISPOSED THEREIN FOR CONTAINING THEREWITHIN A SAMPLE OF MATTER UNDER INVESTIGATION, A POWER ARM FOR SUPPLYING WAVE ENERGY TO SAID BRIDGE NETWORK INCLUDING A SIGNAL OSCILLATOR FOR SUPPLYING HIGH FREQUENCY WAVE ENERGY, A REFERENCE ARM ADAPTED TO AID IN CONTROLLING THE FREQUENCY OF SAID SIGNAL OSCILLATOR, MEANS FOR SELECTIVELY INTRODUCING OR NOT HIGH FREQUENCY WAVE ENERGY LOCAL OSCILLATOR POWER INTO SAID BRIDGE, SAID WAVE ENERGY FROM SAID LOCAL OSCILLATOR BEING DISPLACED AN INTERMEDIATE FREQUENCY AWAY FROM THE FREQUENCY OF SAID SIGNAL OSCILLATOR, A DETECTING ARM INCLUDING A CRYSTAL DETECTOR MEANS FOR DETECTING UNBALANCE OF SAID BRIDGE NETWORK AND FOR DERIVING AN INTERMEDIATE FREQUENCY SIGNAL IN VARIABLE ACCORDANCE WITH UNBALANCE OF SAID BRIDGE; MEANS CONNECTED TO SAID CRYSTAL DETECTOR MEANS FOR AMPLIFYING THE DETECTED INTERMEDIATE FREQUENCY SIGNAL; SECOND DETECTOR MEANS CONNECTED TO SAID INTERMEDIATE FREQUENCY SIGNAL AMPLIFYING MEANS FOR DERIVING A LOW FREQUENCY SIGNAL IN VARIABLE ACCORDANCE WITH THE UNBALANCE OF SAID BRIDGE; MEANS FOR AMPLIFYING AND INDICATING SAID LOW FREQUENCY SIGNAL; AND SWITCHING MEANS FOR CONNECTING SAID AMPLIFYING AND INDICATING MEANS TO SAID CRYSTAL DETECTOR MEANS FOR HOMODYNE DETECTION OF GYROMAGNETIC RESONANCE SIGNALS WHEN NO LOCAL OSCILLATOR POWER IS INTRODUCED INTO SAID BRIDGE NETWORK AND FOR CONNECTING SAID AMPLIFYING AND INDICATING MEANS TO SAID SECOND DETECTING MEANS FOR SUPERHETERODYNE DETECTION OF GYROMAGNETIC RESONANCE SIGNALS WHEN LOCAL OSCILLATOR POWER IS INTRODUCED INTO SAID BRIDGE NETWORK.