Dissociative Ionization of Molecular CF<sub>2</sub>Br<sub>2</sub> under 800 and 400 nm Intense Femtosecond Laser Fields

The interaction between the CF<sub>2</sub>Br<sub>2</sub> molecule and 800/400 nm intense femtosecond laser fields is investigated by direct current (dc) sliced velocity mapping imaging implementation. By analyzing the kinetic energy release distribution and angular distributi...

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Bibliographic Details
Main Authors: Botong Liu, Zhipeng Li, Haitao Sun, Zhenrong Sun, Yan Yang
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/11/4/1704
Description
Summary:The interaction between the CF<sub>2</sub>Br<sub>2</sub> molecule and 800/400 nm intense femtosecond laser fields is investigated by direct current (dc) sliced velocity mapping imaging implementation. By analyzing the kinetic energy release distribution and angular distribution of fragment ions, the dissociation channels along C-Br bond cleavage have been determined. The isotropic structure of the angular distribution for CF<sub>2</sub>Br<sup>+</sup> ions is attributed to the coupling between the excited states. Additionally, a unique elimination channel of CF<sub>2</sub>Br<sub>2</sub><sup>+</sup> → CF<sub>2</sub> + Br<sub>2</sub><sup>+</sup> has been observed and identified in the case of 400 nm laser field, in which the two C-Br bonds break asynchronously.
ISSN:2076-3417