Pressure-induced ultraviolet absorption in rare gases: Absorption coefficients for mixtures of Xe and Ar at pressures up to 40 atm in the vicinity of 147 nm

Absorption spectroscopy of xenon and ethylene–noble gas mixtures at high pressure: towards Bose–Einstein condensation of vacuum ultraviolet photons

“…Our results are in good agreement with earlier measurements by Borovich et al, see the exemplary data points for a pressure of 5 bar in Figure 3 [28].…”

“…The latter results can be well described by a simple model that assumes equilibrium between external degrees of freedom and the internal structure of alkali-noble gas quasi-molecules in the electronic ground and excited state manifolds, as due to the frequent collisions in the dense buffer gas system. For the case of xenon noble gas, vacuum ultraviolet absorption spectra have in earlier work been carried out up to 20 bar pressure [28]. For simple molecules a large collection of both absorption and partly also emission data exists in the vacuum ultraviolet spectral regime, but mostly only for pure samples or at moderate buffer gas pressures [29][30][31].…”