Device for measuring a magnetic field gradient using several NMR probes

The device of the invention comprises at least two differential-amplifier probes. The output signal from one amplifier is introduced again into the input of the other. A phase meter measures the difference between the fields applied to the two probes. Application to the measurement of small magnetic...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	HENRI GLENAT, NELLY KERNEVEZ, ANTOINE SALVI ET CLAUDE SONREL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The device of the invention comprises at least two differential-amplifier probes. The output signal from one amplifier is introduced again into the input of the other. A phase meter measures the difference between the fields applied to the two probes. Application to the measurement of small magnetic-field gradients. LE DISPOSITIF DE L'INVENTION COMPREND AU MOINS DEUX SONDES A AMPLIFICATEUR DIFFERENTIEL, LE SIGNAL DE SORTIE DE L'UN DES AMPLIFICATEURS ETANT REINJECTE A L'ENTREE DE L'AUTRE AMPLIFICATEUR. UN PHASEMETRE DONNE UNE MESURE DE LA DIFFERENCE DES CHAMPS APPLIQUES AUX DEUX SONDES.APPLICATION A LA MESURE DES FAIBLES GRADIENTS DE CHAMP MAGNETIQUE.