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magnet of NMR spectroscopy
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Lectures Analytical NMR Spectroscopy
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Summary Analytical NMR Spectroscopy
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Magnet of NMR spectroscopy.It is the special right of users to operate the NMR instrumentation in a
better way in the Department of Chemistry. User should have knowledge
about all safety hazards with correct standard and they have knowledge
How do NMR operate in a right way. Failure in operating procedures
result instrument damage personal injury and even death.
Magnet.
Large magnetic fields are required for producing of NMR phenomenon.
Magnetic field strengths of 7.0 Tesla to 16.5 Tesla (1 Tesla=10000
Gauss).There are large attractive forces associated with these magnets
and every magnet has a stray magnetic field that extends out past the
physical structure of the magnet.
These attractive forces will be exerted on equipment and people brought
into proximity of the magnet. The closer to the magnet one goes the
larger the attractive force. The larger the mass of the equipment, the
large will be attractive force.
The safety zone or 5 G (5 x10-4T) line is indicate by signs plastic chains
and marks on the floor around each NMR magnet. The magnet uses in
NMR spectrometers are of three types.
1-Permanent magnet
It is convenient to use cheaper lacks of flexibility.
2-Electromagnet
The flux density is changed by changing the current passing through the
coils of magnet. It is insensitive to temperature changes.
Structure inside the magnet.
A superconducting magnet consists of large solenoid coil made up
several kilometer of superconducting wire.The main coil of
superconducting magnet are made by niobium alloy wires which are
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