Spectres d'absorption de H2O, NH3 et CH4 dans l'ultraviolet extrême (100–500 Å)

Abstract The absorption coefficients of H 2 O, NH 3 and CH 4 have been measured between 100 and 400 A. An attempt has been made to explain the spectra from the variation of the photoionisation as a function of the photon energy, far from the threshold.