Detection of NMR signals with a radio-frequency atomic magnetometer

I. M. Savukov, S. J. Seltzer, M. V. Romalis

Research output: Contribution to journalArticlepeer-review

92 Scopus citations

Abstract

We demonstrate detection of proton NMR signals with a radio-frequency (rf) atomic magnetometer tuned to the NMR frequency of 62 kHz. High-frequency operation of the atomic magnetometer makes it relatively insensitive to ambient magnetic field noise. We obtain magnetic field sensitivity of 7 fT/Hz1/2 using only a thin aluminum shield. We also derive an expression for the fundamental sensitivity limit of a surface inductive pick-up coil as a function of frequency and find that an atomic rf magnetometer is intrinsically more sensitive than a coil of comparable size for frequencies below about 50 MHz.

Original languageEnglish (US)
Pages (from-to)214-220
Number of pages7
JournalJournal of Magnetic Resonance
Volume185
Issue number2
DOIs
StatePublished - Apr 2007

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Keywords

  • Atomic magnetometer
  • NMR
  • Pick-up coil
  • Radio-frequency
  • Sensitivity

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