Two-photon excitation cross-section of Xe revisited

International audienceTwo-photon absorption laser-induced fluorescence (TALIF) is a technique commonly used for density and/or temperature diagnostics, mainly of Oxygen atoms, in flames and plasmas. The quantitative analysis is based on the comparison with the signal obtained, at a similar wavelength, in pure Xenon. The cross-section of Xenon is therefore a key parameter, but has not been confirmed by independent measurements. The present experiment aims to provide a direct measurement of this two-photon cross-section