TY - JOUR
T1 - Time-resolved imaging of the reaction coordinate
AU - Mabbs, Richard
AU - Pichugin, Kostyantyn
AU - Sanov, Andrei
N1 - Funding Information:
We would like to acknowledge Mark A. Thompson and Professor Robert Parson for sending us the calculated IBr − potential energy data prior to publication. We are thankful to Todd Sanford and Professor W. Carl Lineberger for enlightening discussions of IBr − dissociation and sending us a preliminary draft as well as the final version of the manuscript 37 prior to its publication. Communications with Professor Martin T. Zanni regarding the X and A ′ state potentials of I 2 − are also gratefully acknowledged. The financial support for this work is provided by the National Science Foundation (Grant No. CHE-0134631), the Arnold and Mabel Beckman Foundation (Beckman Young Investigator Award), the David and Lucile Packard Foundation (Packard Fellowship for Science and Engineering), and the Camille and Henry Dreyfus Foundation (Camille Dreyfus Teacher-Scholar Award).
PY - 2005/5
Y1 - 2005/5
N2 - Time-resolved photoelectron imaging of negative ions is employed to study the dynamics along the reaction coordinate in the photodissociation of IBr-. The results are discussed in a side-by-side comparison with the dissociation of I2-, examined under similar experimental conditions. The I2- anion, extensively studied in the past, is used as a reference system for interpreting the IBr- results. The data provide rigorous dynamical tests of the anion electronic potentials. The evolution of the energetics revealed in the time-resolved (780 nm pump, 390 nm probe) I2- and IBr- photoelectron images is compared to the predictions of classical trajectory calculations, with the time-resolved photoelectron spectra modeled assuming a variety of neutral states accessed in the photodetachment. In light of good overall agreement of the experimental data with the theoretical predictions, the results are used to construct an experimental image of the IBr- dissociation potential as a function of the reaction coordinate.
AB - Time-resolved photoelectron imaging of negative ions is employed to study the dynamics along the reaction coordinate in the photodissociation of IBr-. The results are discussed in a side-by-side comparison with the dissociation of I2-, examined under similar experimental conditions. The I2- anion, extensively studied in the past, is used as a reference system for interpreting the IBr- results. The data provide rigorous dynamical tests of the anion electronic potentials. The evolution of the energetics revealed in the time-resolved (780 nm pump, 390 nm probe) I2- and IBr- photoelectron images is compared to the predictions of classical trajectory calculations, with the time-resolved photoelectron spectra modeled assuming a variety of neutral states accessed in the photodetachment. In light of good overall agreement of the experimental data with the theoretical predictions, the results are used to construct an experimental image of the IBr- dissociation potential as a function of the reaction coordinate.
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U2 - 10.1063/1.1887170
DO - 10.1063/1.1887170
M3 - Article
AN - SCOPUS:18744397255
SN - 0021-9606
VL - 122
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
IS - 17
M1 - 174305
ER -