where p is the density in moles per cubic meter. This equation can be extrapolated to 300 K for use on DT in solid, liquid, and gas phases. The equation is based on a review of solid-hydrogen densities measured in bulk and also by diffraction methods.nRadiation-induced point defects could possibly cause optical absorption and a resulting increased refractive index in solid DT and T„. The effect of the DT refractive index in measuring glass and cryogenic DT laser targets is also described.
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