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Pressure induced shifts have been observed in 3ν3 band of pure CO2, with the high resolution Fourier transform spectrometer of Meudon and using a ’’single beam two cells’’ method. It is shown that these shifts originate mainly from a vibrational effect connected to the anharmonic nature of the vibrational states of CO2. (AIP)
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Arcas et al. (1980) studied this question.
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