| Autor: |
Min Cheng, Hong Gao, Lichang Guan, Guodong Zhang |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
The Review of scientific instruments. 92(11) |
| ISSN: |
1089-7623 |
| Popis: |
Here, we report the design and test of a pulsed low-energy ion beam source for crossed ion-molecule scattering studies. The ions are produced by laser photoionization based methods and thus can be prepared in well-defined quantum states. By using the combination of a double Einzel lenses setup and a specially designed shielding tube, a well spatially confined ion bunch with tunable kinetic energies in the range of 1.0–5.0 eV and typical spreads of ∼150 meV (full width at half maximum) can be formed in the center of a velocity-map imaging (VMI) stack. By combining it with a recently constructed three-dimensional VMI system, the present apparatus is readily available for quantum state-to-state crossed ion-molecule scattering studies. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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