Kinetic energy distributions of product ions from singly and multiply ionized C 2 H 2 molecules induced by 0.8 MeV C + collisions
| Autor: | Manabu Saito, Akio Itoh, Shintaro Yoshida, T. Asai, M. Matsubara, Takuya Majima, Hidetsugu Tsuchida |
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| Rok vydání: | 2017 |
| Předmět: |
Nuclear and High Energy Physics
Electron Kinetic energy 01 natural sciences 010305 fluids & plasmas Ion chemistry.chemical_compound Acetylene chemistry Fragmentation (mass spectrometry) Ionization 0103 physical sciences Molecule Atomic physics Nuclear Experiment 010306 general physics Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 408:203-208 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2017.03.100 |
| Popis: | We measure kinetic energy distributions (KEDs) of product ions from singly and multiply ionized acetylene, C2H2r+∗ (r = 1–4), generated as intermediate states prior to fragmentation in collisions between C2H2 and 0.8 MeV C+ ions, in single-electron capture conditions. The KEDs are systematically obtained as functions of the charge state r by performing coincidence measurements between momentum imaging of the product ions and counting of the number of emitted electrons. The KEDs of the fragment ions exhibit a variety of dependences on r, reflecting the variation of fragmentation dynamics and dominant fragmentation pathways. In particular, the KEDs of C2+ present a characteristic dependence on r because of the different symmetries of charge distributions in three-body fragmentation. |
| Databáze: | OpenAIRE |
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