Published February 1, 2008 | Version v1
Journal article Metadata-only

SQUID-detected NMR in Earth's magnetic field

Creators

  • 1. Institute of Bio- and Nanosystems, Research Center Juelich, D-52425 Juelich (Germany)

Description

Under the highly homogeneous Earth's magnetic field (EMF), nuclear magnetic resonance experiments were performed utilizing a nitrogen-cooled superconducting quantum interference device (SQUID). The Larmor frequency fL of protons is around 2060 Hz in our environment. The sensitivity of our SQUID magnetometer in EMF reached about 70 fT/√Hz near this fL. Free induction decay curves were obtained with a high signal-to-noise ratio. The amplitude of the NMR signal agreed with the theoretical value. The 1H spectra of some samples, for instance, tap water, benzene, ethanol and toluene were studied. The hetero-nuclear J coupling spectrum of 2,2,2-trifluoroethanol was clearly obtained. The influence of EMF fluctuations on the linewidth is also observed

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/97/1/012026

Additional details

Identifiers

DOI
10.1088/1742-6596/97/1/012026;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
97
Journal Issue
1
Journal Page Range
[6 p.]
ISSN
1742-6596

Conference

Title
8. European conference on applied superconductivity
Dates
16-20 Sep 2007
Place
Brussels (Belgium)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40068170
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BENZENE; COUPLING; DRINKING WATER; ELECTROMOTIVE FORCE; ETHANOL; FLUCTUATIONS; GEOMAGNETIC FIELD; HYDROGEN 1; INDUCTION; MAGNETOMETERS; NMR SPECTRA; NUCLEAR MAGNETIC RESONANCE; PROTONS; SENSITIVITY; SIGNAL-TO-NOISE RATIO; SQUID DEVICES; TOLUENE
Descriptors DEC
ALCOHOLS; ALKYLATED AROMATICS; AROMATICS; BARYONS; DIMENSIONLESS NUMBERS; ELECTRONIC EQUIPMENT; ELEMENTARY PARTICLES; EQUIPMENT; FERMIONS; FLUXMETERS; HADRONS; HYDROCARBONS; HYDROGEN COMPOUNDS; HYDROGEN ISOTOPES; HYDROXY COMPOUNDS; ISOTOPES; LIGHT NUCLEI; MAGNETIC FIELDS; MAGNETIC RESONANCE; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; RESONANCE; SPECTRA; STABLE ISOTOPES; SUPERCONDUCTING DEVICES; VARIATIONS; WATER