DC SQUID-based NMR detection from room temperature samples

H. C. Seton*, D. M. Bussell, J. M S Hutchison, I. Nicholson, D. J. Lurie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


The authors have shown that a DC SQUID with a tuned input circuit can be used as a low noise NMR preamplifier for small, room temperature samples at low field. They were interested to observe that the SQUID maintains its bias point over periods of several hours, despite the absence of a Q-spoiler in the input circuit. The 30 ms dead time following NMR excitation pulses would be unacceptable for imaging, but earlier experiments lead the authors to expect that by including a Q-spoiler junction array in the input circuit they would be able to reduce this to well below 1 ms to allow detection after much shorter echo times.

Original languageEnglish
Article number010
Pages (from-to)2133-2138
Number of pages6
JournalPhysics in Medicine and Biology
Issue number11
Publication statusPublished - 1 Dec 1992


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