The absorption spectra of CO laser radiation by 3 nu(3) overtone bands
of (UF6)-U-238 (UF6)-U-235 has been measured using and photoacoustic
spectroscopic techniques. For the two temperatures 250 K and 290 K, me
asured absorption coefficients and cross-sections of the 3 nu(3) band
of (UF6)-U-235 are reported for the first time.