DC superconducting quantum interference device usable in nuclear quadrupole resonance and zero field nuclear magnetic spectrometers
Patent
·
OSTI ID:5299940
A spectrometer for measuring the nuclear quadrupole resonance spectra or the zero-field nuclear magnetic resonance spectra generated by a sample is disclosed. The spectrometer uses an amplifier having a dc SQUID operating in a flux-locked loop for generating an amplified output as a function of the intensity of the signal generated by the sample. The flux-locked loop circuit includes an integrator. The amplifier also includes means for preventing the integrator from being driven into saturation. As a result, the time for the flux-locked loop to recover from the excitation pulses generated by the spectrometer is reduced. 7 figures.
- DOE Contract Number:
- AC03-76SF00098
- Assignee:
- Univ. of California, Oakland, CA (United States)
- Patent Number(s):
- A; US 5254950
- Application Number:
- PPN: US 7-759997
- OSTI ID:
- 5299940
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440800* -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFIERS
DESIGN
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
NMR SPECTRA
NMR SPECTROMETERS
SPECTRA
SPECTROMETERS
SQUID DEVICES
SUPERCONDUCTING DEVICES
47 OTHER INSTRUMENTATION
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFIERS
DESIGN
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
NMR SPECTRA
NMR SPECTROMETERS
SPECTRA
SPECTROMETERS
SQUID DEVICES
SUPERCONDUCTING DEVICES