Collisional intersystem crossing of N2(a′ 1Σu−) to produce triplet-state molecular nitrogen
| Autor: | Tetsuya Iwai, Mizuki Oku, Hironobu Umemoto |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | The Journal of Chemical Physics. 118:10006-10011 |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/1.1573188 |
| Popis: | The production of N2(B 3Πg, v=0) was identified in the collisional deactivation of N2(a′ 1Σu−, v=0) by Xe, Kr, Ar, O2, and NO. N2(B, v=0) was probed by laser-induced fluorescence via the C 3Πu state. N2(a′, v=0) was produced by energy transfer from N2(a 1Πg, v=0) which was produced by two-photon excitation of N2(X 1Σg+). The rate constant for the intersystem crossing was the largest for Xe and the smallest for Ar. The rate constants relative to that for O2 were 11(Xe), 1.1(Kr), ≈0.001(Ar), and 5.8(NO). Except for NO, the difference in these rate constants is mainly attributable to that in the overall rate constant for the deactivation and the quantum yields are comparable. As for NO, the overall rate constant is one order of magnitude larger than that for O2 and comparable to that for Xe, while the yield for the intersystem crossing is around half of that for O2 or Xe. The rate constants for the intersystem crossing by H2 and CH4 are less than 1% of O2. This is consistent with the high yields for the prod... |
| Databáze: | OpenAIRE |
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