Browsing by Author "Shiu, WC"

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Insights into dynamics of the F+CD4 reaction via product pair correlation
(2003-09-08)
Zhou, JG
;
Lin, JJ
;
Shiu, WC
;
Liu, KP
;
應用化學系
To unravel the "extra-atom" complexity of the title reaction, we exploit an experimental approach which, by taking advantage of the correlated information of coincident product pairs, allows us to peel off judiciously the intrinsic complications of a six-atom reaction, extracting the underlying backbone of three-atom dynamics. Examining the collisional energy dependencies of the pair-correlated attributes for a given state(s) of CD3 products from the title reaction, several of major observations can qualitatively be understood, whereas others await further theoretical investigations. An intriguing possibility for the existence of reactive resonances in this six-atom reaction is surmised. (C) 2003 American Institute of Physics.
Rotationally selected product pair correlation in F+CD4 -> DF(nu('))+CD3(nu=0,N)
(2004-04-01)
Zhou, JG
;
Shiu, WC
;
Lin, JJ
;
Liu, KP
;
應用化學系
The title reaction was studied in a crossed-beam experiment by imaging of state-selected products. The rotational state selection of the CD3 products was achieved using (2+1) resonance-enhanced multiphoton ionization. The coincident information on the DF coproducts was revealed in a state-resolved manner from time-sliced velocity map images. Significant dependences of both the correlated differential cross sections and the DF vibrational branching ratios on the "tagged" CD3 rotation states were found. The dynamical implications of one of the major findings are discussed. (C) 2004 American Institute of Physics.