Photodissociative pathways of C{sub 2}H{sub 2} at 121.6 nm revealed by a Doppler-selected time-of-flight (a 3-D mapping) technique
- National Tsing-Hua Univ., Hsinchu (Taiwan, Province of China)
- Inst. of Atomic and Molecular Sciences, Taipei (Taiwan, Province of China)
The photodissociation dynamics of C{sub 2}H{sub 2} near the H-atom Lyman-{alpha} transition was investigated by a newly developed, Doppler-selected time-of-flight technique. The aim of this study is to elucidate the detailed dynamics via the directly measured fragment 3-D distribution. An alternative, preliminary analysis of a fraction of the data is presented here which already reveals a rich dynamics involved in the photodissociation. A strong propensity against the formation of the ground electronic C{sub 2}H(X{sup 2}{Sigma}) state, a prominent C-H stretching excitation in the production of the C{sub 2}H(A) state, and two distinct dissociation pathways being likely involved in the title process have been found. 30 refs., 4 figs.
- OSTI ID:
- 263151
- Journal Information:
- Journal of Physical Chemistry, Vol. 100, Issue 16; Other Information: PBD: 18 Apr 1996
- Country of Publication:
- United States
- Language:
- English
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