A nuclear magnetic resonance (NMR) spectroscopy probe has a sample cell
into and out of which a room temperature liquid sample may be directed.
The cell is surrounded by a radio frequency coil that is used to perform
NMR measurements of the liquid sample, and which is maintained at
cryogenic temperatures. The coil is separated from the sample cell by a
thermally insulative boundary, such as a vacuum. The sample may enter the
cell through an input path, and may exit through an output path. The input
path, output path and sample cell may be surrounded by a sheath through
which flows room temperature gas. The ends of the sample cell may be
tapered to promote thorough flow through the cell, and flow diverters may
be included in the sample cell adjacent to the input and output paths to
force flow to the outer wall of the sample cell.
