II. Applications of the Josephson Effect
II. Applications of the Josephson Effect
II. Applications of the Josephson Effect
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R. Gross, A. Marx, and F. Deppe © Wal<strong>the</strong>r-Meißner-Institut (2001 - 2013)<br />
Summary (rf-SQUID)<br />
operation: inductive coupling to tank circuit<br />
performance:<br />
operation in flux-locked-loop as null detector<br />
Summary (SQUID based instruments)<br />
• antenna, SQUID (flux-to-voltage transformer), read-out electronics<br />
• magnetometer, gradiometer, voltmeter, susceptometer, …<br />
• magnetic field resolution: few fT/(Hz) 1/2<br />
• application: magnetocardiography/-encephalography, NDE, microscopy, geophysics<br />
AS-Chap. 4 - 72
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