Measurement of thermal diffusivity of diamond by the light-induced thermal lattice method

The thermal diffusivity coefficient of natural diamonds is measured by optical induction of thermal diffraction lattices.Notation gc thermal conductivity coefficient - thermal diffusivity coefficient - diffraction efficiency - I_dif diffracted radiation intensity - I_Probe probe radiation intensity - probe radiation wavelength - c specific heat - Q surface energy density - thermal lattice relaxation time - thermal lattice period Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 56, No. 5, pp. 745–748, May, 1989.