The invention relates to the probehead of nuclear magnetic resonance
spectrometer comprising a frame, a radio frequency coil attached thereto
and a rotor located inside the coil containing the examined sample,
supported by bearings and provided with turbines at both ends, a source
of compressed gas, an executive unit and a control unit. The innovative
step involves using different turbines that make the rotor rotate in the
same or in opposite directions and providing the executive unit with at
least two compressed gas channels for rotor velocity control for each
turbine, whereas the coil is connected to the inner surface of the frame
with at least two, preferably four sheets of thin non-conductive and
non-magnetic material. The rotation velocity of the probehead rotor can
be controlled and the rotation direction reversed thereby obtaining
additional information on the examined sample during the measuring
process.
