Non-linearity and frequency shifts of nuclear magnetic spin-noise

Martin Nausner, Judith Schlagnitweit, Vilko Smrečki, Xu Yang, Alexej Jerschow, Norbert Müller

Research output: Contribution to journalArticle

Abstract

We have systematically investigated the line shapes observed in proton nuclear spin-noise spectra which depend in a complex way on the properties of the resonance circuit, the number of spins present, transverse relaxation, inhomogeneous broadening, and radiation damping. Using highly sensitive high resolution probes these dependencies are investigated by way of high resolution 1H noise power NMR spectra of liquid samples. Significant deviations from intuitive expectations are observed. Simulations based on an adapted Nyquist noise equation are used to understand and interpret the experimental findings.

Original languageEnglish (US)
Pages (from-to)73-79
Number of pages7
JournalJournal of Magnetic Resonance
Volume198
Issue number1
DOIs
StatePublished - May 2009

Fingerprint

Circuit resonance
frequency shift
Noise
Protons
Damping
nonlinearity
Nuclear magnetic resonance
Radiation
shift
high resolution
Liquids
noise spectra
nuclear spin
line shape
damping
deviation
nuclear magnetic resonance
protons
probes
radiation

Keywords

  • Nyquist noise
  • Radiation damping
  • Sensitivity
  • Spin-noise
  • Tuning

ASJC Scopus subject areas

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

Cite this

Non-linearity and frequency shifts of nuclear magnetic spin-noise. / Nausner, Martin; Schlagnitweit, Judith; Smrečki, Vilko; Yang, Xu; Jerschow, Alexej; Müller, Norbert.

In: Journal of Magnetic Resonance, Vol. 198, No. 1, 05.2009, p. 73-79.

Research output: Contribution to journalArticle

Nausner, M, Schlagnitweit, J, Smrečki, V, Yang, X, Jerschow, A & Müller, N 2009, 'Non-linearity and frequency shifts of nuclear magnetic spin-noise', Journal of Magnetic Resonance, vol. 198, no. 1, pp. 73-79. https://doi.org/10.1016/j.jmr.2009.01.019
Nausner, Martin ; Schlagnitweit, Judith ; Smrečki, Vilko ; Yang, Xu ; Jerschow, Alexej ; Müller, Norbert. / Non-linearity and frequency shifts of nuclear magnetic spin-noise. In: Journal of Magnetic Resonance. 2009 ; Vol. 198, No. 1. pp. 73-79.
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