title: Radiation-induced formation of chlorine oxides and their potential role in the origin of Martian perchlorates.
abstract: Carbon dioxide (CO2) rich chlorine-bearing ices were exposed to energetic electrons in laboratory simulation experiments to investigate the formation of chlorine oxides (ClxOy) in the condensed phase on Mars. The radiolysis-induced synthesis of chlorine oxides (ClxOy) was complementarily monitored online and in situ via infrared spectroscopy (IR) and quadrupole mass spectrometry (QMS). Three discrete chlorine oxides were identified: chorine dioxide (OClO), dichlorine monoxide (ClOCl), and chloryl chloride (ClClO2). Higher irradiation doses support the facile production of ClO3- and ClO2-bearing high-order chlorine oxides. We attribute manifolds of chlorine oxides, as invoked herein, to the potential origin of perchlorates as found on Mars.
authors.affiliation: Department of Chemistry, University of Hawaii at Manoa , Honolulu, Hawaii 96822, United States.
authors.forename: Yong S
authors.initials: YS
authors.lastname: Kim
authors.forename: Kellie P
authors.initials: KP
authors.lastname: Wo
authors.forename: Surajit
authors.initials: S
authors.lastname: Maity
authors.forename: Sushil K
authors.initials: SK
authors.lastname: Atreya
authors.forename: Ralf I
authors.initials: RI
authors.lastname: Kaiser