text: Figure 1 shows an example of a collision-induced absorption spectra 
  of H-He complexes at a variety of temperatures. The spectra were computed
  from the fundamental theory, using quantum chemical methods, and were shown to
  be in close agreement with laboratory measurements at temperatures, where such 
  measurements exist (for temperatures around 300 K and lower).
  The intensity scale of the figure is highly compressed. At the 
  lowest temperature (300 K), a series of six striking maxima is seen, with deep minima
  between them. The broad maxima roughly coincide with the H vibrational bands.
  With increasing temperature, the minima become less striking and disappear at
  the highest temperature (curve at the top, for the temperature of 9000 K).
  A similar picture is to be expected for the CIA spectra of pure hydrogen gas 
  (i.e. without admixed gases) and, in fact for the CIA spectra of many
  other gases. The main difference, say if nitrogen CIA spectra are considered 
  instead of those of hydrogen gas, would be a much closer spacing, if not a total 
  overlapping, of the diverse CIA bands which appear roughly at the frequencies
  of the vibrational bands of the N molecule.