Determination of the absolute intensity of the afterglow in flash photolysis of tellurium vapor

An investigation was made of the spectral distribution of the absolute intensity of the afterglow of tellurium vapor. Measurements were made using a high-temperature flash photolysis system at a tellurium vapor pressure of 0.23 Torr, a xenon pressure of 20 Torr, and a cell temperature of 950 °K. The afterglow was attributed to the photorecombination of tellurium atoms in the ground state ³P_0,1,2. An estimate was obtained of the lower limit of the photorecombination coefficient which was found to be 2.65×10^–16 cm³·molecules^–1·sec^–1.