Correlated detection of neutral and charged fragments in collision induced fragmentation of molecular clusters
| Autor: | Michel Farizon, Francis Berthias, Bernadette Farizon, Hassan Abdoul-Carime |
|---|---|
| Přispěvatelé: | Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), IPM, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2014 |
| Předmět: |
Hydrogen
Collision-induced dissociation chemistry.chemical_element 02 engineering and technology nanosystems biomolecules 01 natural sciences Dissociation (chemistry) Fragmentation (mass spectrometry) Ionization 0103 physical sciences Physics::Atomic and Molecular Clusters Cluster (physics) Molecule clusters Physics::Chemical Physics Physical and Theoretical Chemistry 010306 general physics Instrumentation Collisional excitation Spectroscopy Chemistry multiparametric event by event detection 021001 nanoscience & nanotechnology Condensed Matter Physics [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry collision induced dissociation Chemical physics Irradiation Atomic physics 0210 nano-technology excitation and relaxation |
| Zdroj: | International Journal of Mass Spectrometry International Journal of Mass Spectrometry, Elsevier, 2014, 365-366, pp.311-315. ⟨10.1016/j.ijms.2014.01.009⟩ |
| ISSN: | 1387-3806 |
| DOI: | 10.1016/j.ijms.2014.01.009 |
| Popis: | accepté dans International Journal of Mass Spectrometry; We report on collision induced fragmentation of isolated molecular nanosystems studied with an event by event detection technique including the correlated detection of both neutral and charged fragments. This work focuses on the dissociation induced by collisional excitation without ionisation and electron-capture. Two molecular cluster cations are investigated: the collision of protonated hydrogen clusters at 60keV/amu with helium targets and that of protonated water clusters at 8keV with an argon gas. In addition to the molecular evaporation process the dissociation channel leading to the production of the H3+ or H3O+ molecular cations (loss of all the molecules) is observed with an unexpected abundance. The cross section for the production of these cations is observed to increase with the number of molecules in the cluster. Such an increase cannot be associated with the direct collisional excitation of the cation core of the cluster. |
| Databáze: | OpenAIRE |
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