I just need some data for comparison: What are the measured (by
you, the user) and quoted (by the manufacturer) field drift rates (in
Hz per hour) and half-height line width (with supercon shims only) for an
NMR magnet?
For instance our 400 MHz(1H) magnet from Magnex has the ff. specs:
Specified in manual Measured using H2O
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field drift (stability) | <6 Hz/hour 1H | -1.3 Hz/hour
HHLW S/C shims only | <0.2 ppm | 0.04 ppm
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Thanks,
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Edward T. Chainani Nuclear Magnetic Resonance Laboratory Manager
National Chemistry Instrumentation Center (NCIC)
Ateneo de Manila University phone: (632) 924-4601 loc. 2309
Loyola Heights, Quezon City e-mail: etch@ginto.chem.admu.edu.ph
Philippines
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