Titan's atmosphere simulation experiment using a continuous-spectrum UV-VUV synchrotron beamline

Zhe Peng (1, 2) , Thomas Gautier (1) , Nathalie Carrasco (1) , A. Giuliani (3) , Ahmed Mahjoub (1) , Jean-Jacques Correia (1) , P. Pernot (2) , A. Buch (4) , Y. Bénilan (5) , Cyril Szopa (1) , Guy Cernogora (1)

1 PLANETO - LATMOS
2 LCPO - Laboratoire de Chimie Physique D'Orsay
3 SSOLEIL - Synchrotron SOLEIL
4 LGPM - Laboratoire de Génie des Procédés et Matériaux - EA 4038
5 LISA (UMR_7583) - Laboratoire Interuniversitaire des Systèmes Atmosphériques

We report here a new reactor, named APSIS for Atmospheric Photochemistry SImulated by Synchrotron, where a gas mixture (N2/CH4=90/10) at various pressures in the mbar range in the reactor is irradiated using the continuous-spectrum (60-350 nm) DISCO beam in the SOLEIL Radiation Facility. The photochemical products, in situ detected by quadrupole mass spectrometry, include C2, C3, C4 and probably C5 compounds.We compared the neutral productions in APSIS and other experiments with the INMS measurements.

Domaines: Planétologie et astrophysique de la terre [astro-ph.EP]; Planétologie et astrophysique de la terre [astro-ph.EP]; Physique Atmosphérique et Océanique [physics.ao-ph]

Zhe Peng, Thomas Gautier, Nathalie Carrasco, A. Giuliani, Ahmed Mahjoub, et al.. Titan's atmosphere simulation experiment using a continuous-spectrum UV-VUV synchrotron beamline. European Planetary Science Congress 2012, Sep 2012, Madrid, Spain. 7, pp.EPSC2012-194, 2012. ⟨hal-00742633⟩