@article {Li2015,
	title = {Communication: Photodissociation of CH3CHO at 308 nm: Observation of H-roaming, CH3-roaming, and transition state pathways together along the ground state surface},
	journal = {Journal of Chemical Physics},
	volume = {142},
	number = {4},
	year = {2015},
	note = {<p>cited By 13</p>
},
	abstract = {<p>Following photodissociation of acetaldehyde (CH3CHO) at 308 nm, the CO(v = 1-4) fragment is acquired using time-resolved Fourier-transform infrared emission spectroscopy. The CO(v = 1) rotational distribution shows a bimodal feature; the low- and high-J components result from H-roaming around CH3CO core and CH3-roaming around CHO radical, respectively, in consistency with a recent assignment by Kable and co-workers (Lee et al., Chem. Sci. 5, 4633 (2014)). The H-roaming pathway disappears at the CO(v 2) states, because of insufficient available energy following bond-breaking of H + CH3CO. By analyzing the CH4 emission spectrum, we obtained a bimodal vibrational distribution; the low-energy component is ascribed to the transition state (TS) pathway, consistent with prediction by quasiclassical trajectory calculations, while the high-energy component results from H- and CH3-roamings. A branching fraction of H-roaming/CH3-roaming/TS contribution is evaluated to be (8\% {\textpm} 3\%)/(68\% {\textpm} 10\%)/(25\% {\textpm} 5\%), in which the TS pathway was observed for the first time. The three pathways proceed concomitantly along the electronic ground state surface. {\textcopyright} 2015 AIP Publishing LLC.</p>
},
	keywords = {Chemical reactions, Electronic ground state, Emission spectroscopy, Ground state, Ground-state surface, High-energy components, Low-energy components, Photodissociation, Quasi-classical-trajectory calculations, Rotational distributions, Time-resolved Fourier transform infrared, Vibrational distribution},
	doi = {10.1063/1.4906457},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923816206\&doi=10.1063\%2f1.4906457\&partnerID=40\&md5=99b098dc7381aebd6e798d5f12579e2b},
	author = {Li, H.-K. and Tsai, P.-Y. and Hung, K.-C. and Kasai, T. and Lin, K.-C.}
}
