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Coulomb-explosion imaging of concurrent CH2BrI photodissociation dynamics.

MPG-Autoren
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Techert,  S.
Research Group of Structural Dynamics of (Bio)Chemical Systems, MPI for Biophysical Chemistry, Max Planck Society;

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Zitation

Burt, M., Boll, R., Lee, J. W. L., Amini, K., Kockert, H., Vallance, C., et al. (2017). Coulomb-explosion imaging of concurrent CH2BrI photodissociation dynamics. Physical Review A, 96(4): 043415. doi:10.1103/PhysRevA.96.043415.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-002E-1C44-C
Zusammenfassung
The dynamics following laser-induced molecular photodissociation of gas-phase CH2BrI 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 CH2BrI 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 C(H)2Br. 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.