What question did this study set out to answer?

Determine the vibrational relaxation rates of HF(ν = 1) in collisions with lower alkanes, propylene, and chlorine trifluoride to evaluate energy transfer dynamics in chemical lasers.

December 15, 1973The Journal of Chemical Physics

Vibrational deactivation rates of HF(ν = 1) by CH4, C2H6, C3H8, C4H10, C3H6, and ClF3

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Authors

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

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Implication

Experimental study reveals vibrational deactivation rates of excited hydrogen fluoride across hydrocarbons and chlorine trifluoride, indicating linear scaling with alkane chain length.

Key Points

Determine the vibrational relaxation rates of HF(ν = 1) in collisions with lower alkanes, propylene, and chlorine trifluoride to evaluate energy transfer dynamics in chemical lasers.
Measured collision-induced relaxation rates using the laser-excited vibrational fluorescence technique.
Evaluated six collision partners: methane (CH4), ethane (C2H6), propane (C3H8), butane (C4H10), propylene (C3H6), and chlorine trifluoride (ClF3).
Deactivation rates were (5.3 ± 0.8) × 10⁴ s⁻¹·torr⁻¹ for CH4, (1.10 ± 0.16) × 10⁵ s⁻¹·torr⁻¹ for C2H6, (1.35 ± 0.2) × 10⁵ s⁻¹·torr⁻¹ for C3H8, (1.7 ± 0.25) × 10⁵ s⁻¹·torr⁻¹ for C4H10, (3.2 ± 0.5) × 10⁵ s⁻¹·torr⁻¹ for C3H6, and (1.13 ± 0.17) × 10⁵ s⁻¹·torr⁻¹ for ClF3.
The deactivation cross-section for lower alkanes (CnH2n+2) increased linearly with the carbon number n.
The HF–ClF3 deactivation rate proved orders of magnitude greater than values typically observed for other fluorine sources.

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Hancock et al. (1973) studied this question.

synapsesocial.com/papers/6a89652e176d2ac34cfb9962 https://doi.org/10.1063/1.1680014

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Implication

Experimental study reveals vibrational deactivation rates of excited hydrogen fluoride across hydrocarbons and chlorine trifluoride, indicating linear scaling with alkane chain length.

Vibrational deactivation rates of HF(ν = 1) by CH4, C2H6, C3H8, C4H10, C3H6, and ClF3

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Cite This Study

Vibrational deactivation rates of HF(ν = 1) by CH4, C2H6, C3H8, C4H10, C3H6, and ClF3

Discussion

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Implication

Key Points

Cite This Study

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