Further investigation of the photodissociation dynamics of dichlorocarbene near 248 nm

The Journal of Chemical Physics
Seung Keun Shin, Paul J Dagdigian

Abstract

A further investigation of the 248 nm photodissociation of CCl(2), which expands upon our original study of this process [S. K. Shin and P. J. Dagdigian, Phys. Chem. Chem. Phys. 8, 3446 (2006)], is presented. The CCl(2) parent molecule and the CCl photofragment were detected by laser fluorescence excitation in a molecular beam experiment. From the dependence of the CCl(2) signals on the photolysis laser fluence, attenuation cross sections of the 0(0), 1(1), and 2(1) vibrational levels were determined; the cross sections for the excited vibrational levels were found to be significantly smaller than those for the ground vibrational level. The previously observed fragment CCl bimodal rotational state distribution was found to arise from the photolysis of more than one parent molecule. At low CHCl(3) mole fractions in the gas supplied to the pyrolysis beam source, it was concluded that CCl(2) is the photolysis precursor for both low-J and high-J CCl fragments. On the basis of the dependence of the CCl signals on the photolysis laser fluence, ground and vibrationally excited CCl(2), respectively, were assigned as the precursors to these two classes of fragments. The photofragment excitation spectra for low-J and high-J CCl fragments...Continue Reading

References

Aug 31, 2004·The Journal of Chemical Physics·Chia-Shih LinBor-Chen Chang
Jul 23, 2005·The Journal of Chemical Physics·Haiyan FanScott A Reid
Sep 29, 2005·Physical Chemistry Chemical Physics : PCCP·György TarczayAttila G Császár
Feb 25, 2006·The Journal of Chemical Physics·Zhong WangTrevor J Sears
Jul 21, 2006·Physical Chemistry Chemical Physics : PCCP·Seung Keun Shin, Paul J Dagdigian
Oct 13, 2006·The Journal of Chemical Physics·Seung Keun Shin, Paul J Dagdigian
Feb 17, 2007·The Journal of Chemical Physics·Chong TaoScott H Kable
Apr 14, 2007·The Journal of Chemical Physics·Seung Keun Shin, Paul J Dagdigian
Feb 20, 2008·The Journal of Chemical Physics·Seung Keun Shin, Paul J Dagdigian

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Citations

Sep 26, 2012·The Journal of Physical Chemistry. a·Erping SunBing Yan
Sep 18, 2012·The Journal of Chemical Physics·Chong TaoScott A Reid
Sep 29, 2015·The Journal of Physical Chemistry. a·Shimin ShanBing Yan
Dec 17, 2021·Physical Chemistry Chemical Physics : PCCP·Christian T MatthaeiIngo Fischer

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