Abstract

A variation on the transient calorimetric technique is used to measure the change in the total hemispherical emissivity of the clean (100) surface of tungsten induced by adsorption of oxygen, carbon monoxide, and carbon. In each case, monolayer quantities of adsorbate cause a fractional decrease in the emissivity of about 1% over the temperature range 450–1000 K. An explanation of this behavior is proposed that involves the change in conduction electron scattering at the surface caused by quenching of the W(100) surface resonance at 0.3 eV.

© 1982 Optical Society of America

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