The enhancement spectra of the collision-induced absorption of D2 in its fundamental band region 2600–4000 cm−1 in the binary mixtures D2–He, D2–Ar and D2–Kr are investigated at 298 K. The binary absorption coefficients of the band are determined from the measured integrated absorption coefficients and compared with previous results. An analysis of the experimental spectra is carried out by assuming appropriate line-shape functions for the overlap and the quadrupole transitions.

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