Dissociative Ionization and Coulomb Explosion of CHBrCl<sub>2</sub> in Intense Near-Infrared Femtosecond Laser Fields
We experimentally demonstrate the dissociative photoionization of CHBrCl<sub>2</sub> molecules in a femtosecond laser field by time-of-flight mass spectrum and dc-slice imaging technology. The results suggest that the low kinetic energy components are from the dissociative ionization pro...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/12/10/5014 |
| Summary: | We experimentally demonstrate the dissociative photoionization of CHBrCl<sub>2</sub> molecules in a femtosecond laser field by time-of-flight mass spectrum and dc-slice imaging technology. The results suggest that the low kinetic energy components are from the dissociative ionization process of single-charged molecular ions. The angular distribution of fragment Cl<sup>+</sup> ions can be attributed to the features of dissociative state and molecular configuration, and that of Br<sup>+</sup> ions results from the electronic wave-packet evolution and combination of the multi-dissociation processes. The high kinetic energy components are from the Coulomb explosion of multi-charged molecular ions, and the error of the C-Br distance involved in the Coulomb explosion can be explained by the movement of the effective charge center of the polyatomic molecule. |
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| ISSN: | 2076-3417 |