Dependence of NMR noise line shapes on tuning, matching, and transmission line properties

Eli Bendet-Taicher, Norbert Müller, Alexej Jerschow

Research output: Contribution to journalArticle

Abstract

The tuning and matching conditions of rf circuits, as well as the properties of the transmission lines connecting these to the preamplifier, have direct consequences for NMR probe sensitivity and as for the optimum delivery of rf power to the sample. In addition, tuning/matching conditions influence radiation damping effects, which manifest themselves as fast signal flip-back and line broadening effects, and can lead to concentration-dependent frequency shifts. Previous studies have also shown that the appearance of spin-noise and absorbed circuit noise signals heavily depended on tuning settings. Consequently, all these phenomena are linked together. The mutual connections and interdependences of these effects are highlighted and reviewed here.

Original languageEnglish (US)
Pages (from-to)1-11
Number of pages11
JournalConcepts in Magnetic Resonance Part B: Magnetic Resonance Engineering
Volume44
Issue number1
DOIs
StatePublished - Feb 2014

Fingerprint

Radiation Effects
transmission lines
line shape
Noise
Electric lines
Tuning
tuning
Nuclear magnetic resonance
nuclear magnetic resonance
Networks (circuits)
preamplifiers
frequency shift
delivery
Damping
damping
Radiation
probes
radiation

Keywords

  • NMR noise
  • Transmission line

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Dependence of NMR noise line shapes on tuning, matching, and transmission line properties. / Bendet-Taicher, Eli; Müller, Norbert; Jerschow, Alexej.

In: Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering, Vol. 44, No. 1, 02.2014, p. 1-11.

Research output: Contribution to journalArticle

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