Experimental investigations of the thermomagnetic torque effect in deuterium

Abstract

Measurements of the Scott effect, or thermomagnetic torque, have been made in deuterium gas at absolute pressures of 0.09 to 2.10 Torr, with magnetic fields from one to 440 oersteds, and in a temperature range from 110 K to 360 K. The curves for the torque multiplied by pressure plotted versus magnetic field/pressure have peaks in the manner of the Levi and Beenakker theory. These peaks occur at a value of H/P=100 Oer/Torr which is compared to the value for hydrogen gas. Investigations have been carried out in three concentrations of ortho and para deuterium. It was observed that the torque effect in deuterium increases with increasing para enrichment. The Scott effect in deuterium was found to be smaller than the effect in hydrogen. For all enrichments of deuterium the effect went to zero as the temperature was lowered to 100 K. Values for the coefficient of viscosity and rotational g-factor were calculated.