Direct calculation of the intermolecular interaction potential from the extended principle of corresponding states for N-2-He

An inversion procedure is used to obtain the interaction potential from the extended principle of corresponding states. Over a range of reduced temper ature extending from 1 to 100 this directly calculated potential for N-2 - He agrees excellently with the ESMSV-type independently known potential. Th is accurate inverted potential can be used to obtain the orientation averag ed viscosity collision integrals and the dimensionless ratios that are esse ntial to calculate other transport properties.