The double ionization potentials of argon clusters
| Autor: | Eckart Rühl, Helmut Baumgärtel, Heike C. Schmelz, C. Schmale |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Chemistry
Double ionization General Physics and Astronomy Photoionization Molar ionization energies of the elements Ion symbols.namesake Ionization Physics::Atomic and Molecular Clusters symbols Cluster (physics) Physics::Atomic Physics Physical and Theoretical Chemistry van der Waals force Ionization energy Atomic physics |
| Zdroj: | Chemical Physics Letters. 191:430-434 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/0009-2614(92)85404-x |
| Popis: | Double ionization potentials of argon clusters are measured using tunable synchrotron radiation. Small, unstable doubly charged argon cluster ions (Ar2+n) are investigated with the photoion—photoion-coincidence technique. This technique is used to measure appearance potentials of dissociative double ionization reaction channels (Coulomb explosion) as a function of neutral cluster size. The threshold energies of Ar2+n are found to be between those of the atom and the solid. A linear relationship between threshold energies and the average cluster size is found. The results are discussed in relation to neutral cluster size distributions, single and multiple ionization of stable molecules, van der Waals clusters, and metallic clusters, as well as the energetics of cluster di-cation decay. |
| Databáze: | OpenAIRE |
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