AN NMR FIELD-CYCLING SPECTROMETER IN WHICH THE SAMPLE IS CONVEYED ON A CIRCULAR PATH AT A PREDETERMINED ANGULAR VELOCITY

摘要

A field cycling spectrometer for making nuclear magnetic resonance measurements on an object conveys the object under analysis at predetermined angular velocity successively through a first, spatially characterized, constant magnetic field B0 and a second, spatially characterized, constant magnetic field BS. Nuclear magnetic resonance signals are detected from the object after passing through the second field. The fields are preferably provided by a toroidal electromagnet having a first circumferential segment operable to maintain said first magnetic field level B0 therein and a second circumferential segment operable to maintain said second magnetic field level BS therein.