期刊
CHEMICAL PHYSICS LETTERS
卷 334, 期 1-3, 页码 39-46出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0009-2614(00)01445-7
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The 193 nm photodissociation of HNO3 in a supersonic jet has been investigated by LIF and REMPI-TOF techniques probing the OH(X-2 II) and the O(P-3) products, respectively. The measured rotational state distribution of OH is shown to be dominated by a bimodal distribution consistent with the previously reported bimodal translational energy distribution of OH. An additional decay channel, yielding O(P-3) fragments with high kinetic energy, has been observed and tentatively assigned to HNO3 + hv --> O(P-3) + HONO((X) over tilde (1)A'). Energetic considerations indicate that about one third of the HONO products are unstable, decaying further to OH + NO. (C) 2001 Elsevier Science B.V. Ail rights reserved.
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