Dissociative ionization of molecular CF2Br2 under 800 and 400 nm intense femtosecond laser fields

Botong Liu; Zhipeng Li; Haitao Sun; Zhenrong Sun; Yan Yang

doi:10.3390/app11041704

Dissociative ionization of molecular CF₂Br₂ under 800 and 400 nm intense femtosecond laser fields

Botong Liu, Zhipeng Li, Haitao Sun, Zhenrong Sun, Yan Yang^*

^*Corresponding author for this work

Institute for Advanced Study in Precision Spectroscopy

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The interaction between the CF₂Br₂ 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 CF2Br+ ions is attributed to the coupling between the excited states. Additionally, a unique elimination channel of CF₂Br₂ ⁺ → CF2 + Br2 ⁺ has been observed and identified in the case of 400 nm laser field, in which the two C-Br bonds break asynchronously.

Original language	English
Article number	1704
Pages (from-to)	1-12
Number of pages	12
Journal	Applied Sciences (Switzerland)
Volume	11
Issue number	4
DOIs	https://doi.org/10.3390/app11041704
State	Published - 2 Feb 2021

Keywords

Dibromodifluoromethane (CFBr)
Dissociative ionization (DI)
Excited states coupling
Femtosecond laser field

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10.3390/app11041704

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title = "Dissociative ionization of molecular CF2Br2 under 800 and 400 nm intense femtosecond laser fields",

abstract = "The interaction between the CF2Br2 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 CF2Br+ ions is attributed to the coupling between the excited states. Additionally, a unique elimination channel of CF2Br2 + → CF2 + Br2 + has been observed and identified in the case of 400 nm laser field, in which the two C-Br bonds break asynchronously.",

keywords = "Dibromodifluoromethane (CFBr), Dissociative ionization (DI), Excited states coupling, Femtosecond laser field",

author = "Botong Liu and Zhipeng Li and Haitao Sun and Zhenrong Sun and Yan Yang",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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doi = "10.3390/app11041704",

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TY - JOUR

T1 - Dissociative ionization of molecular CF2Br2 under 800 and 400 nm intense femtosecond laser fields

AU - Liu, Botong

AU - Li, Zhipeng

AU - Sun, Haitao

AU - Sun, Zhenrong

AU - Yang, Yan

PY - 2021/2/2

Y1 - 2021/2/2

N2 - The interaction between the CF2Br2 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 CF2Br+ ions is attributed to the coupling between the excited states. Additionally, a unique elimination channel of CF2Br2 + → CF2 + Br2 + has been observed and identified in the case of 400 nm laser field, in which the two C-Br bonds break asynchronously.

AB - The interaction between the CF2Br2 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 CF2Br+ ions is attributed to the coupling between the excited states. Additionally, a unique elimination channel of CF2Br2 + → CF2 + Br2 + has been observed and identified in the case of 400 nm laser field, in which the two C-Br bonds break asynchronously.

KW - Dibromodifluoromethane (CFBr)

KW - Dissociative ionization (DI)

KW - Excited states coupling

KW - Femtosecond laser field

UR - https://www.scopus.com/pages/publications/85101262197

U2 - 10.3390/app11041704

DO - 10.3390/app11041704

M3 - 文章

AN - SCOPUS:85101262197

SN - 2076-3417

VL - 11

SP - 1

EP - 12

JO - Applied Sciences (Switzerland)

JF - Applied Sciences (Switzerland)

IS - 4

M1 - 1704

ER -

Dissociative ionization of molecular CF₂Br₂ under 800 and 400 nm intense femtosecond laser fields

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Keywords

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