Robert J. Bell

TL;DR: The data for the noble metals and Al, Pb, and W can be reasonably fit using the Drude model and it is shown that -epsilon1(omegas) = epsilon2(omega) approximately omega(2)(p)/(2omega( 2)(tau) at the damping frequency omega = omega(tau), where the plasma frequency is omega(p).

TL;DR: Refinements in the fitting technique have resulted in only slight changes in the Drude model parameters for Al, Au, Ag, and W, and the optical resistivity has been calculated from the Druded model parameters ωτ and ωp and compared to handbook values for the dc resistivity.

TL;DR: This work has used a nonresonant cavity to measure the angle averaged absorptance spectra P(omega) of aluminum, molybdenum, tantalum, titanium, tungsten, and iron in the 30-300-cm(-1) wavenumber region.

TL;DR: An exact analytical expression for P(omega) of a metal is derived by using a nonresonant cavity to measure at ambient temperature the angle averaged absorptance spectra of gold, nickel, and lead in the 30-300-cm(-1) wave-number region.

TL;DR: In this article, the complex indices of refraction for crystalline gypsum and calcite were determined from reflectance measurements for both single crystals and pressed powder pellets using a classical dispersive analysis (DA) of the reflectance data.