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Collinear Photothermal Deflection Spectroscopy of Liquid Samples at Varying Temperature

Volume 47, Number 10 (Oct. 1993) Page 1580-1584

Spear, Jonathan D.; Silva, Robert J.; Klunder, Gregory L.; Russo, Richard E.

The method of photothermal beam deflection was demonstrated for measuring the absorption spectrum of an aqueous Nd3+ solution at temperatures between 25°C and 90°C. Changes in the magnitude of the observed deflection can be correlated with the temperature dependence of both the absorptivity of the Nd3+ ions and the physical properties of the solvent, most notably the thermo-optic coefficient dn/dT.