Development of novel lamps for study of enhanced production of resonance by low-density mercury discharges

A novel mercury-argon discharge tube is described. The tube incorporates two identical condensation pump cold spots that are employed to determine both the mercury sorption rate and the coefficient of free diffusion for mercury in argon. It is found that equilibration periods for this system depend in part on the temperature difference between the two cold spot surfaces, and on the separation of these surfaces. Sorption of mercury at the discharge tube's surface, and the subsequent cleanup of the mercury charge, are determined by the time rate of change of the equilibration period. Data are incorporated into the design scheme of discharge tubes are incorporated into the design scheme of discharge tubes intended for Zeeman effect and isotope blending studies.