Photofragment-ion imaging

Photofragment-ion imaging

----Photofragment ion imaging is an experimental technique for making measurements of the velocity of product molecules or particles following photodissociation of a parent molecule. The method uses a two-dimensional detector, usually a microchannel plate, to record the arrival positions of state-selected ions created by resonantly enhanced multi-photon ionzation (REMPI). The first experiment using photofragment-ion imaging was performed by David W Chandler and Paul L Houston in 1987 on the phototodissociation dynamics of methyl iodide (iodomethane, CH3I). [] .

Background

Many problems in molecular reaction dynamics demand the simultaneous measurement of a particle's speed and angular direction; the most demading require the measurement of this velocity in coincidence with internal energy. Studies of molecular reactions, energy transfer processes and photodissociation can only be understood completely if the internal energies and velocities of all products can be specified [] .

References

Citation
first = Benjamin J (ed.) |last = Whitaker
authorlink = Benjamin J Whitaker
title = Imaging in Molecular Dynamics
publisher = Cambridge University Press
date = 2003
isbn = 0 521 81059

[1] Citation
first1 = David W. |last1 = Chandler
first2 = Paul L. | last2 = Houston
journal = J. Chem. Phys.,
title = Two-dimensional imaging of state-selected photodissociation products detected by multiphoton ionization
volume = 87
pages = 1445-7
date = 1987
doi = 10.1063/1.453276

[2] Citation
first = Paul L. | last = Houston
journal = J. Phys. Chem.,
title = Vector correlations in photodissociation dynamics
volume = 91
pages = 5388-5397
date = 1987
doi = 10.1021/j100305a003


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