Additions and Corrections
J. Phys. Chem., Vol. 100, No. 32, 1996 13885
ADDITIONS AND CORRECTIONS 1995, Volume 99 Jack A. Syage: Photofragment Imaging of Ozone Photo˜ ,V) dissociation: O3 f O(3Pj) + O2(X Page 16531. We have reanalyzed our results on the photofragment angle-velocity distributions of the O(3Pj)0,1,2) state for ozone photolysis at 226 nm.1 The reported translational energy distribution for O(3P), from which the O2(V) vibrational distribution is inferred, was determined using an expression that assumed a velocity-independent anisotropy. In fact, the anisotropy is different for the high- and low-velocity components in the O(3P) bimodal velocity distribution. The angle-averaged velocity distribution is given by
P(V) ∝
1 [I0(Vz) + 2J90(Vz)] Vz2
(1)
where I0(Vz) and I90(Vz) are the time-of-flight spectra, under coresampled conditions, for fragment recoil 0° and 90° with respect to the laser polarization axis, and Vz is the fragment velocity along the drift tube direction (Vz is directly proportional to the flight time distribution).3 Using eq 1 to determine the translational energy distribution results in a yield of O2(Vg26) relative to total O2(X,V) of 0.079 ( 0.020, up from our previous value of 0.055 ( 0.020. The new value is in very close agreement to the value of 0.081 reported by Miller et al.2 No other results are affected, nor are the conclusions of the paper changed. References and Notes (1) Syage, J. A. J. Phys. Chem. 1995, 99, 16533. (2) Miller, R. L.; Suits, A. G.; Houston, P. L.; Toumi, R.; Mack, J. A.; Wodtke, A. M. Science 1994, 265, 1831. (3) Syage, J. A. J. Chem. Phys. 1996, 105, 1007.
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