What question did this study set out to answer?

Determine the vibrational relaxation and collisional energy transfer rates of HF (v = 1), CO (v = 1), and NO (v = 1) at room temperature.

January 1, 1973IEEE Journal of Quantum Electronics

MA1 - Laser-excited vibrational energy transfer studies of HF, CO, and NO

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Authors

WGW. GreenUnited States Naval Research Laboratory JHJ. K. HancockUnited States Naval Research Laboratory

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Implication

Experimental study demonstrates collisional vibrational relaxation rates across gas-phase HF, CO, and NO mixtures, revealing rapid transfer pathways and revised self-relaxation kinetics.

Key Points

Determine the vibrational relaxation and collisional energy transfer rates of HF (v = 1), CO (v = 1), and NO (v = 1) at room temperature.
Conducted measurements at 295 ± 2 K using an electrically initiated pulsed HF chemical laser to selectively excite gas molecules.
Utilized excited HF (v = 1) both as a direct target for quenching measurements and as a collisional pump source for CO (v = 1) and NO (v = 1).
The HF (v = 1) self-relaxation rate in argon was (8.7 ± 0.1) × 10⁴ s⁻¹ torr⁻¹ regardless of rotational excitation, with quenching rates of 350 ± 25 s⁻¹ torr⁻¹ by O₂, (2.5 ± 0.2) × 10³ s⁻¹ torr⁻¹ by CO, and (6.2 ± 0.3) × 10³ s⁻¹ torr⁻¹ by NO.
CO (v = 1) deactivation rates were 480 ± 25 s⁻¹ torr⁻¹ by HF and 130 ± 15 s⁻¹ torr⁻¹ by N₂, alongside indirect evidence of vibrational transfer from HF (v = 1) to the v = 2 levels of NO and O₂.
The NO self-relaxation rate was (2.7 ± 0.2) × 10³ s⁻¹ torr⁻¹, which is approximately five times faster than earlier kinetic spectroscopy predictions.

Cite This Study

Green et al. (1973) studied this question.

synapsesocial.com/papers/6a86bc9ffd179ab3599eaf3c https://doi.org/10.1109/jqe.1973.1077296

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Implication

Experimental study demonstrates collisional vibrational relaxation rates across gas-phase HF, CO, and NO mixtures, revealing rapid transfer pathways and revised self-relaxation kinetics.

MA1 - Laser-excited vibrational energy transfer studies of HF, CO, and NO

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Implication

Key Points

Cite This Study

MA1 - Laser-excited vibrational energy transfer studies of HF, CO, and NO

Discussion

Member takes

Implication

Key Points

Cite This Study

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