We derive a thermophysical model for the infrared radiative response of common metals by modifying a recently proposed model to account for the presence of thermally driven dynamics. The temperature-dependence of our model is built upon the consistency of the equation of motion with the predictions of the relevant equilibrium theory for temperature-dependent carrier transport. The model parameters are systematically regressed over data representing a range of temperatures. The resulting model is valid over the approximate spectral range λ ε [1,16] μm and for the approximate temperature range T ε [300,700] K. Since the model is expressed as a complex-valued frequency response function, it can be directly incorporated into the Fresnel relations for use with more general optical and radiative frameworks.
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