1 MHz bandwidth true NMR SQUID amplifier
Journal Article
·
· Journal of Low Temperature Physics
- Univ. of Southern California, Los Angeles, CA (United States)
We have developed an integrated dc SQUID magnetometer with additional positive feedback (APF) for low frequency true NMR applications. The APF scheme allows direct coupled read out from the SQUID to room temperature electronics and eliminates the need for the conventional modulation scheme, thereby greatly simplifying the flux-locked loop electronics. We have configured our SQUID system for the specific needs of sensitive NMR measurements which include large bandwidth and high slew rate. We have achieved a bandwidth of 1.2 MHz and a slew rate greater than 10{sup 5}{Phi}{sub 0}/s for frequencies above 10 kHz.
- OSTI ID:
- 198176
- Report Number(s):
- CONF-950676--
- Journal Information:
- Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 1-2 Vol. 101; ISSN JLTPAC; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
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