• DocumentCode
    845746
  • Title

    An NMR marginal oscillator for measuring magnetic fields below 50 mT

  • Author

    Weyand, Kurt

  • Author_Institution
    Phys.-Tech. Bundesanstalt, Braunschweig, West Germany
  • Volume
    38
  • Issue
    2
  • fYear
    1989
  • fDate
    4/1/1989 12:00:00 AM
  • Firstpage
    410
  • Lastpage
    414
  • Abstract
    A marginal oscillator, developed to measure or control magnetic fields in the flux-density range from 50 mT down to 1 mT by using nuclear magnetic resonance (NMR), is described. This provides additional signal-dependent modulation of the feedback conductance, considerably increasing the signal-to-noise ratio. Observing proton resonance in an aqueous CuSO4 solution, a sample volume of about 2 cm3 has led to a signal-to-noise ratio of 50 dB obtained in a field with a flux density of 15 mT
  • Keywords
    copper compounds; magnetic field measurement; nuclear magnetic resonance spectroscopy; oscillators; proton magnetic resonance; CuSO4; NMR marginal oscillator; aqueous solution; feedback conductance; magnetic field control; nuclear magnetic resonance; proton resonance; signal-dependent modulation; signal-to-noise ratio; Absorption; Density measurement; Frequency; Magnetic field measurement; Magnetometers; Nuclear magnetic resonance; Nuclear measurements; Oscillators; Pulse measurements; Volume measurement;
  • fLanguage
    English
  • Journal_Title
    Instrumentation and Measurement, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9456
  • Type

    jour

  • DOI
    10.1109/19.192317
  • Filename
    192317
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=845746