Investigating the breakup dynamics of dihydrogen sulfide ions recombining with electrons

QC 20110823
This paper presents results concerning measurements of the dissociative recombination (DR) of dihydrogen sulfide ions. In combination with the ion storage ring CRYRING an imaging technique was used to investigate the breakup dynamics of the three-body channel in the DR of (SD2+)-S-32. The two energetically available product channels S(P-3)+2D(S-2) and S(D-1)+2D(S-2) were both populated, with a branching fraction of the ground-state channel of 0.6(0.1). Information about the angle between the two deuterium atoms upon dissociation was obtained together with information about how the available kinetic energy was distributed between the two light fragments. The recombination cross sections as functions of energy in the interval of 1 meV to 0.3 eV in the center-of-mass frame are presented for (SH2+)-S-34. The thermal rate coefficient for the DR of (SH2+)-S-34 was determined to be (4.8 +/- 1.0)x10(-7)(T/300)(-0.72 +/- 0.1) cm(3) s(-1) over this interval.

Ingår i:Journal of Chemical Physics: AIP Publishing122:22, s. 224314-0021-96061089-7690

Av författaren/redakt...: Hellberg, F; Zhaunerchyk, V; Ehlerding, A; Geppert, W D; Larsson, M; Thomas, R D; visa fler...; Bannister, M E; Bahati, E; Vane, C R; Österdahl, Fabia ...; Hlavenka, P; af Ugglas, M; visa färre...

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