An active feedback scheme for low field NMR experiments

E. Baudin, K. Safiullin, S. W. Morgan, P. J. Nacher

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


In low field nuclear magnetic resonance (NMR) it is desirable to combine proper characteristics of the detection scheme with a good signal to noise ratio. For example, a reduced coupling between the sample and the detection coil is needed for NMR with highly magnetized samples and a large bandwidth is required in magnetic resonance imaging (MRI). We discuss a solution based on a simple active feedback circuit that preserves the signal to noise ratio as opposed to traditional solutions which do not. We give illustrations of its use in experiments on low temperature hyperpolarized liquid 3He- 4He mixtures and in hyperpolarized 3He gas MRI.

Original languageEnglish (US)
Article number012009
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 2011
Externally publishedYes


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