Branching ratios for the dissociative recombination of hydrocarbon ions

Mitchell, James B.; Angelova, G. V.; Rebrion-Rowe, C.; Novotny, Steffen; Garrec, Jean-Luc Le; Bluhme, H.; Seiersen, K.; Svendsen, Annette; Andersen, Lars H.

doi:10.1088/1742-6596/4/1/028

Cited by 13 publications

(8 citation statements)

References 12 publications

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“…In italics are the product distributions calculated using phase space theory (Herbst, 1978;Galloway and Herbst, 1991). a FA (Queffelec et al, 1985), b FA (Queffelec et al, 1989), c SR (Petrignani et al, 2005), d FA (Vallee et al, 1987), e FA (Rowe et al, 1988), f SR (Vejby-Christensen et al, 1997), g SR (Jensen et al, 1999), h SR (Rosen et al, 2000), i SR (Vikor et al, 1999), j SR (Larson et al, 1998), k SR (Derkatch et al, 1999), l FA (Adams et al, 1991), m SR (Semaniak et al, 2001), n FA (Williams et al, 1996), o SR (Andersen et al, 1996), p SR (Neau et al, 2000), q SR (Jensen et al, 2000), r SR (Semaniak et al, 1998), s SR (Kalhori et al, 2002), t SR (Ehlerding et al, 2003), u SR (Mitchell et al, 2003), v SR (Geppert et al, 2005), w SR (Geppert et al, 2004), x SR (Thomas et al, 2005), y SR (Zhaunerchyk et al, 2004), z SR (Hamberg et al, 2004), aa SR (Heber et al, 2004), ab SR (Hellberg et al, 2004), ac SR (Datz et al, 1995b), ad SR (Datz et al, 1995a), ae FA (Johnsen et al, 2000).…”

Section: Storage Rings For Determining Neutral Product Distributionsmentioning

confidence: 99%

Electron molecular ion recombination: Product excitation and fragmentation

Adams

Poterya

Babcock

2006

Mass Spectrometry Reviews

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Electron-ion dissociative recombination is an important ionization loss process in any ionized gas containing molecular ions. This includes the interstellar medium, circumstellar shells, cometary comae, planetary ionospheres, fusion plasma boundaries, combustion flames, laser plasmas and chemical deposition and etching plasmas. In addition to controlling the ionization density, the process generates many radical species, which can contribute to a parallel neutral chemistry. Techniques used to obtain rate data and product information (flowing afterglows and storage rings) are discussed and recent data are reviewed including diatomic to polyatomic ions and cluster ions. The data are divided into rate coefficients and cross sections, including their temperature/energy dependencies, and quantitative identification of neutral reaction products. The latter involve both ground and electronically excited states and including vibrational excitation. The data from the different techniques are compared and trends in the data are examined. The reactions are considered in terms of the basic mechanisms (direct and indirect processes including tunneling) and recent theoretical developments are discussed. Finally, new techniques are mentioned (for product identification; electrostatic storage rings, including single and double rings; Coulomb explosion) and new ways forward are suggested.

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Section: Storage Rings For Determining Neutral Product Distributionsmentioning

confidence: 99%

Electron molecular ion recombination: Product excitation and fragmentation

Adams

Poterya

Babcock

2006

Mass Spectrometry Reviews

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“…Note that the data for H 3 O + are erroneous in this compilation for the CRYRING measurements and therefore we recommend looking at the original work [82]. One of the more striking result that was obtained by these experiments concerned hydrocarbon ions for which a large number of different product channels have been observed (including those involving carbon-carbon breaking bounds) and the dominance of a particular channel appears in several cases to be determined by the structure of the initial recombining ion [83][84][85][86].…”

Section: Chemistry In Astrophysical Media Astrohp 2010mentioning

confidence: 99%

Gas phase reactive collisions, experimental approach

Canosa

2011

EPJ Web of Conferences

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Abstract. Since 1937 when the first molecule in space has been identified, more than 150 molecules have been detected. Understanding the fate of these molecules requires having a perfect view of their photochemistry and reactivity with other partners. It is then crucial to identify the main processes that will produce and destroy them. In this chapter, a general view of experimental techniques able to deliver gas phase chemical kinetics data at low and very low temperatures will be presented. These techniques apply to the study of reactions between neutral reactants on the one hand and reactions involving charge species on the other hand.

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“…DCE and DR processes play an important role in determining the fate of polyatomic ions in weakly ionized plasmas, and while crosssections for DR reactions are known for a number of systems, only recently for small polyatomic ions have product branching ratios become available. 1,2 This project aimed to extend our knowledge of the fate of transient neutrals produced in plasma environments while providing fundamental new information on the dynamics of two-and three-body dissociation processes. As noted below, significant successes in the study of DCE processes were achieved, while the efforts at carrying out DR measurements on the fast-ion-beam apparatus were not successful.…”

Section: Objectivesmentioning

confidence: 99%

Dissociative Recombination Chemistry and Plasma Dynamics

Continetti¹

2008

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information SPONSOR/MONITOR'S REPORT N. Randolph ST. Room 3112 NUMBER(S) Arlington VA22203 AFRL-SR-AR-TR-08-0401 DISTRIBUTION / AVAILABILITY STATEMENTDistribution Statement A SUPPLEMENTARY NOTES ABSTRACTAdvances made in the study of the dissociation dynamics and product branching ratios of energized transient neutral molecules formed by charge-transfer (DCE) and recombination of cations with free electrons (DR) are reviewed. The results obtained include detailed measurements of the thtee-body dissociation of H3, O4 and sym-triazine (HCN)3, as well as the product branching ratios for the two-body dissociation of CH5+ and H3O+. These results have significance for a number of Air Force applications, ons including ion-assisted ignition and combustion for hypersonic vehicle applications. This project aimed to extend our knowledge of the fate of transient neutrals produced in plasma environments while providing fundamental new information on the dynamics of two-and three-body dissociation processes. As noted below, significant successes in the study of DCE processes were achieved, while the efforts at carrying out DR measurements on the fast-ion-beam apparatus were not successful.

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Branching ratios for the dissociative recombination of hydrocarbon ions

Cited by 13 publications

References 12 publications

Electron molecular ion recombination: Product excitation and fragmentation

Electron molecular ion recombination: Product excitation and fragmentation

Gas phase reactive collisions, experimental approach

Dissociative Recombination Chemistry and Plasma Dynamics

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