DC superconducting quantum interference device usable in nuclear quadrupole resonance and zero field nuclear magnetic spectrometers

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868973

Fan, Non Q ^[1]; Clarke, John ^[2]

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1. San Diego, CA
2. Berkeley, CA

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.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• Assignee: Regents, University of California (Oakland, CA)
• Patent Number(s): US 5254950
• OSTI ID: 868973
• Country of Publication: United States
• Language: English

Related Subjects

dc
superconducting
quantum
interference
device
usable
nuclear
quadrupole
resonance
zero
field
magnetic
spectrometers
spectrometer
measuring
spectra
zero-field
generated
sample
disclosed
amplifier
squid
operating
flux-locked
loop
generating
amplified
output
function
intensity
signal
circuit
integrator
means
preventing
driven
saturation
result
time
recover
excitation
pulses
reduced
dc squid
zero field
quantum interference
magnetic resonance
signal generated
nuclear magnetic
superconducting quantum
interference device
pulses generated
resonance spectra
excitation pulse
amplified output
quadrupole resonance
nuclear quadrupole
excitation pulses
dc superconducting
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