Josephson junction Q-spoiler
An automatic Q-spoiler comprising at least one Josephson tunnel junction connected in an LC circuit for flow of resonant current therethrough. When in use in a system for detecting the magnetic resonance of a gyromagnetic particle system, a high energy pulse of high frequency energy irradiating the particle system will cause the critical current through the Josephson tunnel junctions to be exceeded, causing the tunnel junctions to act as resistors and thereby damp the ringing of the high-Q detection circuit after the pulse. When the current has damped to below the critical current, the Josephson tunnel junctions revert to their zero-resistance state, restoring the Q of the detection circuit and enabling the low energy magnetic resonance signals to be detected.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- DOE Contract Number:
- AC03-76SF00098
- Assignee:
- Dept. of Energy
- Application Number:
- ON: DE87007220
- OSTI ID:
- 6535925
- Country of Publication:
- United States
- Language:
- English
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Josephson junction Q-spoiler
Josephson junction q-spoiler
Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
JOSEPHSON JUNCTIONS
USES
Q-SWITCHING
ELECTRON SPIN RESONANCE
ELECTRONIC CIRCUITS
NUCLEAR MAGNETIC RESONANCE
NUCLEAR QUADRUPOLE RESONANCE
JUNCTIONS
MAGNETIC RESONANCE
RESONANCE
SUPERCONDUCTING JUNCTIONS
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