Experimental values for the viscosity of the radioactive hydrogen
isotopologue tritium are still unknown in literature. Existing values from ab
initio calculations disregard quantum mechanic effects and are therefore only
good approximations for room temperature and above. To fill in these missing
experimental values, a measurement setup has been designed, to measure the
viscosity of gaseous hydrogen and its isotopologues (H2, HD, HT, D2, DT,
T2) at cryogenic temperatures. In this paper, the first results with this
Cryogenic Viscosity Measurement Apparatus (Cryo-ViMA) of the viscosity of
gaseous hydrogen between 200 K to 300 K are presented.Comment: 9 pages, 2 figures, 22nd International Vacuum Congress, submitted to
e-Journal of Surface Science and Nanotechnolog