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Open AccessArticle

Dissociative Ionization and Coulomb Explosion of Molecular Bromocyclopropane in an Intense Femtosecond Laser Field

by Botong Liu 1,2, Yan Yang 1,2,*, Haitao Sun 1,2 and Zhenrong Sun 1,2
1
State Key Laboratory of Precision Spectroscopy, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China
2
Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
*
Author to whom correspondence should be addressed.
Molecules 2018, 23(12), 3096; https://doi.org/10.3390/molecules23123096
Received: 2 November 2018 / Revised: 20 November 2018 / Accepted: 24 November 2018 / Published: 27 November 2018
(This article belongs to the Section Organic Chemistry)
The dissociative ionization and Coulomb explosion of molecular bromocyclopropane (BCP) has been experimentally investigated by time-of-flight mass spectrum and dc-slice imaging technology. The sliced 2D images, kinetic energy releases and angular distributions of the fragment ions are obtained under the intense femtosecond laser fields (8.0 × 1013–2.0 × 1014 W/cm2). The results indicated that the low kinetic energy release (KER) components come from dissociative ionization of BCP+, while the high KER components come from Coulomb explosion of BCP2+. The chemical reaction path of BCP+ has been calculated by ab initio calculation, furthermore, the C-Br bond cleavage involved Coulomb explosion channels have been revealed, and the corresponding dehydrogenation mechanism has been confirmed. View Full-Text
Keywords: bromocyclopropane (BCP); femtosecond laser field; dissociative ionization (DI); Coulomb explosion (CE); dehydrogenation; dissociation time bromocyclopropane (BCP); femtosecond laser field; dissociative ionization (DI); Coulomb explosion (CE); dehydrogenation; dissociation time
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MDPI and ACS Style

Liu, B.; Yang, Y.; Sun, H.; Sun, Z. Dissociative Ionization and Coulomb Explosion of Molecular Bromocyclopropane in an Intense Femtosecond Laser Field. Molecules 2018, 23, 3096.

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