Radiant energy – Invisible radiant energy responsive electric signalling – Superconducting type
Patent
1992-09-08
1993-12-07
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Superconducting type
H01L 3900
Patent
active
052685772
ABSTRACT:
A radiation detector (10) is provided, wherein a bulk high T.sub.c superconducting sample (11) is placed in a magnetic field and maintained at a superconducting temperature. Photons of incident radiation will cause localized heating in superconducting loops of the sample destroying trapped flux and redistributing the fluxons, and reducing the critical current of the loops. Subsequent cooling of the sample in the magnetic field will cause trapped flux redistributed Abrikosov fluxons and trapped Josephson fluxons. The destruction and trapping of the fluxons causes changes in the magnetization of the sample inducing currents in opposite directions in a pickup coil (12) which is coupled by an input coil (15) to an rf SQUID (16).
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John Clarke, "Josephson Effect Devices," Phys. Bull. vol. 30, (1979) pp. 206-208.
Artuso Joseph F.
Franks Larry A.
Hull Kenneth L.
Symko Orest G.
Gaither Roger S.
Hannaher Constantine
Moser William R.
The United States of America as represented by The United States
Valdes Miguel A.
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