Distribution of internal states of [formula omitted]) from photodissociation of nitric acid
We detected fluorescence of OH (A 2Σ +− X 2Π) from nitric acid photolyzed at 193 nm. Transitions for spin-orbit states are resolved; the population ratio of these states is Π 3 2 /Π 1 2 ≈ 1.1 ± 0.1 . About 3% of available energy is distributed to rotation of the OH fragment; no vibrationally excited...
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Published in | Chemical physics letters Vol. 257; no. 5; pp. 481 - 486 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
1996
|
Online Access | Get full text |
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Summary: | We detected fluorescence of
OH (A
2Σ
+−
X
2Π)
from nitric acid photolyzed at 193 nm. Transitions for spin-orbit states are resolved; the population ratio of these states is
Π
3
2
/Π
1
2
≈ 1.1 ± 0.1
. About 3% of available energy is distributed to rotation of the OH fragment; no vibrationally excited OH was observed. The transitional energies of OH and NO
2 are estimated from the Doppler widths to be 2332 and 861 cm
−1, respectively. These results indicate about 87.8% of the excess energy to be directed to internal energy of NO
2. The experimental data indicate that NO
2 may be produced in an electronically excited state. |
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ISSN: | 0009-2614 1873-4448 |
DOI: | 10.1016/0009-2614(96)00567-2 |