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2017-10-06
Coulomb explosion imaging of concurrent CHBrI photodissociation dynamics
Michael BurtRebecca BollJason W. L. LeeKasra AminiHansjochen KöckertClaire VallanceAlexander S. GentlemanStuart R. MackenzieSadia BariCédric BommeStefan DüstererBenjamin ErkBastian ManschwetusErland MüllerDimitrios RompotisEvgeny SavelyevNora SchirmelSimone TechertRolf TreuschJochen KüpperSebastian TrippelJoss WieseHenrik StapelfeldtBarbara Cunha de MirandaRenaud GuilleminIyas IsmailLoïc JournelTatiana MarchenkoJérôme PalaudouxFrancis PenentMaria Novella PiancastelliMarc SimonOksana TravnikovaFelix BrausseGildas GoldsztejnArnaud RouzéeMarie GéléocRomain GeneauxThierry RuchonJonathan UnderwoodDavid M. P. HollandAndrey S. MereshchenkoPavel K. OlshinPer JohnssonSylvain MaclotJan LahlArtem RudenkoFarzaneh ZiaeeMark BrouardDaniel Rolles
文献摘要
The dynamics following laser-induced molecular photodissociation of gas-phase CHBrI at 271.6 nm were investigated by time-resolved Coulomb explosion imaging using intense near-IR femtosecond laser pulses. The observed delay-dependent photofragment momenta reveal that CHBrI undergoes C-I cleavage, depositing 65.6% of the available energy into internal product states, and that absorption of a second UV photon breaks the C-Br bond of CHBr. Simulations confirm that this mechanism is consistent with previous data recorded at 248 nm, demonstrating the sensitivity of Coulomb explosion imaging as a real-time probe of chemical dynamics.
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