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Velocity mapping photodissociation

Fig. 7. Total kinetic energy release derived from velocity map images of 0(3P2) and D(2S) fragment atoms following photodissociation of OD at 226 and 243 nm, respectively. The initial vibrational state of OD is determined from energy balance with TKER = hv + E(vib)oD — Do(OD). The bar graphs show the calculated photodissociation yields for OD X2Il(v) at a vibrational temperature of 1700 K. (From Radenovic et al.97)... Fig. 7. Total kinetic energy release derived from velocity map images of 0(3P2) and D(2S) fragment atoms following photodissociation of OD at 226 and 243 nm, respectively. The initial vibrational state of OD is determined from energy balance with TKER = hv + E(vib)oD — Do(OD). The bar graphs show the calculated photodissociation yields for OD X2Il(v) at a vibrational temperature of 1700 K. (From Radenovic et al.97)...
A. T. J. B. Eppink and D. H. Parker. Energy partitioning following photodissociation of methyl iodide in the A band a velocity mapping study. J. Chem. Phys., 110(2) 832-844 (1999). [Pg.410]

Photochemistry of gas-phase molecules, including species of atmospheric importance the molecular photodissociation dynamics are traced by photofragment ion (velocity map) imaging. [Pg.78]

Arthur Suits is a professor of chemistry at Wayne State University where he and his group study the many roles office radicals—atoms or molecules with unpaired electrons—in chemical processes. One of the techniques developed in his lab, DC Shce Velocity Map Imaging, uses a video camera to record images of ions formed by photo ionization after (for one example) a dissociation reaction occurs. For instance, Suits has used laser photodissociation (Section 7.4) to break deuterium bromide ( HBr or DBr) into deuterium and bromine radicals. The photodissociation occurs at a fixed photon energy... [Pg.319]

The gas phase photodissociation of free NO2 molecules is a benchmark system which has been investigated in great detail in particular with the velocity map ion imaging technique,... [Pg.366]

Wells KL, Perriam G, Stavros VG (2009) Hme-resolved velocity map ion imaging study of NH3 photodissociation. J Chem Phys 130 074308... [Pg.76]

Chandler, D. W. and P. L. Houston (1987). Two-dimensional imaging of state-selected photodissociation products by multiphoton ionization. Chem. Phys. 87, 1445. Chandler, D. W. and D. H. Parker (1999). Velocity mapping studies of highly excited molecules. Adv. Photochem. 25, 59. [Pg.507]

Imaging is the term used for a direct mapping of die velocity (vector) of the products. " It captures the Newton sphere, Section 6.3.1, and projects it for viewing in a number of ways, as shown in Figure 7.7. The figiue shows the technique applied to photodissociation but it is equally useful and important for bimolecular collisions and in other instances where an energy-rich species blows up and one wants to monitor the distribution of fragments in velocity space. [Pg.285]


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