Photodissociation Dynamics of AlO at 193 nm using Time-Sliced Ion Velocity Imaging†

Fang-fang Li; Yu-jie Ma; Jia-xing Liu; Guan-jun Wang; Feng-yan Wang

doi:10.1063/1674-0068/cjcp2007118

Journals >Chinese Journal of Chemical Physics >Volume 33 >Issue 5 >Page 649 > Article

Chinese Journal of Chemical Physics
Vol. 33, Issue 5, 649 (2020)

Photodissociation Dynamics of AlO at 193 nm using Time-Sliced Ion Velocity Imaging^†

Fang-fang Li, Yu-jie Ma, Jia-xing Liu, Guan-jun Wang, and Feng-yan Wang^*

DOI: 10.1063/1674-0068/cjcp2007118 Cite this Article

Fang-fang Li, Yu-jie Ma, Jia-xing Liu, Guan-jun Wang, Feng-yan Wang. Photodissociation Dynamics of AlO at 193 nm using Time-Sliced Ion Velocity Imaging^†[J]. Chinese Journal of Chemical Physics, 2020, 33(5): 649 Copy Citation Text

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Abstract

The photodissociation dynamics of AlO at 193 nm is studied using time-sliced ion velocity mapping. Two dissociation channels are found through the speed and angular distributions of aluminum ions: one is one-photon dissociation of the neutral AlO to generate Al($ ^2 $P$ _ \rm{u} $)+O($ ^3 $P$ _ \rm{g} $), and the other is two-photon ionization and then dissociation of AlO$ ^+ $ to generate Al$ ^+ $($ ^1 $S$ _ \rm{g} $)+O($ ^3 $P$ _ \rm{g} $). Each dissociation channel includes the contribution of AlO in the vibrational states $ v $ = 0-2. The anisotropy parameter of the neutral dissociation channel is more dependent on the vibration state of AlO than the ion dissociation channel.

Keywords

193 nm AlO Photodissociation Time-sliced ion velocity imaging Vibrational state

$ \begin{eqnarray} h\nu + E_{ \rm{int}} ( \rm{AlO})- D_0 ( \rm{AlO}) = E_{ \rm{trans}} + E_{ \rm{int}} ( \rm{Al+O}) \end{eqnarray} $

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