HF-SQUID-Gradiometer mit resonanter Flußfokussierungsstruktur

HF-SQUID-Gradiometer mit resonanter Flußfokussierungsstruktur

The invention relates to a SQUID with a plurality of SQUID loops containing at least one common Josephson contact which act as a gradiometer and to a flux-focusing structure of superconducting material. This SQUID has such a flux-focusing structure which is constructed in such a way that it also act...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SODTKE, ERIK., 52223 STOLBERG, DE, GOTTSCHLICH, MARTIN, 42115 WUPPERTAL, DE
Format: Patent
Sprache:ger
Schlagworte:
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:The invention relates to a SQUID with a plurality of SQUID loops containing at least one common Josephson contact which act as a gradiometer and to a flux-focusing structure of superconducting material. This SQUID has such a flux-focusing structure which is constructed in such a way that it also acts as a tank resonant circuit. The fundamental resonant mode or one of the upper modes of the flux-focusing structure can be used here to couple the r.f. power to the gradiometer-SQUID loop. This provides a gradiometer with low inherent noise and a high magnetic field gradient sensitivity.