Just out of curiosity: what would happen if a magnet's liquid nitrogen
dewar runs out of liquid nitrogen (while there was sufficient liquid
helium in the helium can)?
I suppose that the helium evaporation rate would increase, and one would
run the risk of air entering the nitrogen can, but is there an immediate
danger of a quench?
Thanks,
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Edward T. Chainani Nuclear Magnetic Resonance Laboratory Manager
National Chemistry Instrumentation Center (NCIC)
Ateneo de Manila University phone: (632) 426-6001 loc. 2309
Loyola Heights, Quezon City e-mail: etch@ginto.chem.admu.edu.ph
Philippines FAX: (632) 426-5985
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