Coulomb-explosion imaging of concurrent CH2BrI photodissociation dynamics.

Burt, M.; Boll, R.; Lee, J. W. L.; Amini, K.; Kockert, H.; Vallance, C.; Gentleman, A. S.; Mackenzie, S. R.; Bari, S.; Bomme, C.; Düsterer, S.; Erk, B.; Manschwetus, B.; Müller, E.; Rompotis, D.; Savelyev, E.; Schirmel, N.; Techert, S.; Treusch, R.; Küpper, J.; Trippel, S.; Wiese, J.; Stapelfeldt, H.; de Miranda, B. C.; Guillemin, R.; Ismail, I.; Journel, L.; Marchenko, T.; Palaudoux, J.; Penent, F.; Piancastelli, M. N.; Simon, M.; Travnikova, O.; Brausse, F.; Goldsztejn, G.; Rouzee, A.; Geleoc, M.; Geneaux, R.; Ruchon, T.; Underwood, J.; Holland, D. M. P.; Mereshchenko, A. S.; Olshin, P. K.; Johnsson, P.; Maclot, S.; Lahl, J.; Rudenko, A.; Ziaee, F.; Brouard, M.; Rolles, D.

doi:10.1103/PhysRevA.96.043415

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Coulomb-explosion imaging of concurrent CH2BrI photodissociation dynamics.

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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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Citation

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.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-1C44-C

Abstract

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.