Dear AMMRL readers,
Someone who is looking into getting a new spectrometer has questions regarding
the ability of a Helmholtz coil to shield a magnet from external fields:
* Does the Helmholz coil set-up help with performance?
* If yes, is there a measure in terms of residual field disturbance (as % of
the full disturbance outside the magnet) after magnet screening and after
Helmholz compensation technique?
* Is there an understanding of how this residual field change translates
into adverse affect on NMR performance?
* Is there an understanding of side effects from the Helmholz coil set-up,
i.e.unwanted induced currents affecting field homogeneity, additional
susceptibility to temperature changes.
Any information you can provide will be appreciated.
Jonathan Lukin
office: MBRC Rm. 5R406 416-340-4800 x2173
lab: Best Institute Rm.23 416-946-0596
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Received on Mon Aug 22 2005 - 17:42:30 MST