title: Dissociative recombination of fully deuterated protonated acetonitrile, CD3CND+: product branching fractions, absolute cross section and thermal rate coefficient.
abstract: The dissociative recombination of fully deuterated protonated acetonitrile, CD(3)CND(+), has been investigated at the CRYRING heavy ion storage ring, located at the Manne Siegbahn Laboratory, Stockholm, Sweden. Branching fractions were measured at approximately 0 eV relative collision energy between the ions and the electrons and in 65% of the DR events there was no rupture of bonds between heavy atoms. In the remaining 35%, one of the bonds between the heavy atoms was broken. The DR cross-section was measured between approximately 0 eV and 1 eV relative collision energy. In the energy region between 1 meV and 0.1 eV the cross section data were best fitted by the expression sigma = 7.37 x 10(-16) (E/eV)(-1.23) cm(2), whereas sigma = 4.12 x 10(-16) (E/eV)(-1.46) cm(2) was the best fit for the energy region between 0.1 and 1.0 eV. From the cross section a thermal rate coefficient of alpha(T) = 8.13 x 10(-7) (T/300)(-0.69) cm(3) s(-1) was deduced.
authors.affiliation: Department of Physics, AlbaNova, Stockholm University, Stockholm, Sweden.
authors.forename: Erik
authors.initials: E
authors.lastname: Vigren
authors.forename: Magdalena
authors.initials: M
authors.lastname: Kamińska
authors.forename: Mathias
authors.initials: M
authors.lastname: Hamberg
authors.forename: Vitali
authors.initials: V
authors.lastname: Zhaunerchyk
authors.forename: Richard D
authors.initials: RD
authors.lastname: Thomas
authors.forename: Mathias
authors.initials: M
authors.lastname: Danielsson
authors.forename: Jacek
authors.initials: J
authors.lastname: Semaniak
authors.forename: Patrik U
authors.initials: PU
authors.lastname: Andersson
authors.forename: Mats
authors.initials: M
authors.lastname: Larsson
authors.forename: Wolf D
authors.initials: WD
authors.lastname: Geppert
mesh_terms: D000097:Acetonitriles / Q000737:chemistry*; D003903:Deuterium / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D011522:Protons; D013696:Temperature
chemical_list: D000097:Acetonitriles; D011522:Protons; D003903:Deuterium; C032159:acetonitrile