Rotationally specific rates of vibration–vibration energy exchange in collisions of NO(X 2Π1/2,v=3) with NO(X 2Π,v=0)

作者: Meezanul Islam , Ian W. M. Smith

DOI: 10.1063/1.479843

关键词: Atomic physicsLine (formation)UltravioletSpectral lineFluorescenceOptical parametric oscillatorExcited stateChemistryResonanceInfrared

摘要: Infrared ultraviolet double resonance (IRUVDR) experiments have been performed to investigate the rotational specificity of vibrational–vibrational (V–V) exchange process, NO(X 2Π1/2,v=3,Ji)+NO(v=0)→NO(X 2Π1/2,v=2,Jf)+NO(v=1), for which vibrational energy discrepancy corresponds 55.9 cm−1. Radiation from an optical parametric oscillator was used excite NO molecules into a specific level (Ji) in X 2Π, Ω=12, v=3 state. Laser-induced fluorescence (LIF) spectra (0,2) band A 2Σ+–X 2Π1/2 system were then recorded at delays corresponding fraction collision. From relative line intensities, rate coefficients determined transfer excited molecule X 2Π1/2, v=3, Ji different final levels (Jf) v=2 Results are reported Ji=3.5, 4.5, 7.5, 10.5, and 15.5. The data show significant, though not strong, propensity J decrease by one; i.e., ΔJ=Jf−Ji=−1, especially higher lev...

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