Feng-yan Wang, Zhi-chao Chen, Yong-wei Zhang, Quan Shuai, Bo Jiang, Dong-xu Dai, Xiu-yan Wang, Xue-ming Yang . UV Photodissociation Dynamics of Nitric Acid: The Hydroxyl Elimination Channel[J]. Chinese Journal of Chemical Physics , 2009, 22(2): 191-196. doi: 10.1088/1674-0068/22/02/191-196
Citation: Feng-yan Wang, Zhi-chao Chen, Yong-wei Zhang, Quan Shuai, Bo Jiang, Dong-xu Dai, Xiu-yan Wang, Xue-ming Yang . UV Photodissociation Dynamics of Nitric Acid: The Hydroxyl Elimination Channel[J]. Chinese Journal of Chemical Physics , 2009, 22(2): 191-196. doi: 10.1088/1674-0068/22/02/191-196

UV Photodissociation Dynamics of Nitric Acid: The Hydroxyl Elimination Channel

doi: 10.1088/1674-0068/22/02/191-196
Funds:  This work was supported by the National Natural Science Foundation of China, the Ministry of Sciencesand Technology, and the Chinese Academy of Sciences.
  • Received Date: 2009-02-22
  • Sliced velocity mapping ion imaging technique was employed to investigate the dynamics of the hydroxyl elimination channel in the photodissociaiton of nitric acid in the ultraviolet region. The OH product was detected by (2+1) resonance enhanced multiphoton ionization via the D2∑- electronic state. The total kinetic energy spectra of the OH+NO2 channel from the photolysis of HONO2 show that both NO2(X 2A1) and NO2(? 2B2) channels are present,suggesting that both 11 A" and 21 A" excited electronic states of HONO2 are involved in the excitation. The parallel angular distributions suggest that the dissociation of the nitric acid is a fast process in comparison with the rotational period of the HNO3 molecule. The anisotropy parameter ? for the hydroxyl elimination channel is found to be dependent on the OH product rotational state as well as the photolysis energy.
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UV Photodissociation Dynamics of Nitric Acid: The Hydroxyl Elimination Channel

doi: 10.1088/1674-0068/22/02/191-196
Funds:  This work was supported by the National Natural Science Foundation of China, the Ministry of Sciencesand Technology, and the Chinese Academy of Sciences.

Abstract: Sliced velocity mapping ion imaging technique was employed to investigate the dynamics of the hydroxyl elimination channel in the photodissociaiton of nitric acid in the ultraviolet region. The OH product was detected by (2+1) resonance enhanced multiphoton ionization via the D2∑- electronic state. The total kinetic energy spectra of the OH+NO2 channel from the photolysis of HONO2 show that both NO2(X 2A1) and NO2(? 2B2) channels are present,suggesting that both 11 A" and 21 A" excited electronic states of HONO2 are involved in the excitation. The parallel angular distributions suggest that the dissociation of the nitric acid is a fast process in comparison with the rotational period of the HNO3 molecule. The anisotropy parameter ? for the hydroxyl elimination channel is found to be dependent on the OH product rotational state as well as the photolysis energy.

Feng-yan Wang, Zhi-chao Chen, Yong-wei Zhang, Quan Shuai, Bo Jiang, Dong-xu Dai, Xiu-yan Wang, Xue-ming Yang . UV Photodissociation Dynamics of Nitric Acid: The Hydroxyl Elimination Channel[J]. Chinese Journal of Chemical Physics , 2009, 22(2): 191-196. doi: 10.1088/1674-0068/22/02/191-196
Citation: Feng-yan Wang, Zhi-chao Chen, Yong-wei Zhang, Quan Shuai, Bo Jiang, Dong-xu Dai, Xiu-yan Wang, Xue-ming Yang . UV Photodissociation Dynamics of Nitric Acid: The Hydroxyl Elimination Channel[J]. Chinese Journal of Chemical Physics , 2009, 22(2): 191-196. doi: 10.1088/1674-0068/22/02/191-196

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