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Citation: Li Quan-Xin, Yu Shu-Qin, Chen Cong-Xiang, Ma Xing-Xiao. The Study of Energy Transfer from Vibrational State to Electronic State in C₂H₄-K System[J]. Acta Physico-Chimica Sinica, ;1994, 10(04): 330-335. doi: 10.3866/PKU.WHXB19940409 shu

The Study of Energy Transfer from Vibrational State to Electronic State in C₂H₄-K System

1.
Department of Modern Chemistry, University of Science and Technology of China, Hefei 230026

Received Date: 2 September 1992
Available Online: 15 April 1994

Ethylene molecules were excited to high vibrational states by a TEA CO_2 laser, and then coilided with ground electronic state potassium atoms, in order to study the vibrational state to electronic state (V-E) energy transfer. The rate constants have been obtained by fitting the measuxed tdrie-resolved potassium atom flou-rescence to a proposed kinetic energy level group model. The measured rate constants of the V-E energy transfer in C_2H_4-K system are about 10~(-10)/cm~3·molec s~(-1). in the temperature range 453—663 K. The corresponding cross sections vary from 0.30—0.80 nm and decrease with increasing temperature. The experimental results indicate that attractive interaction play a role in the above non-resonant V-E energy transfer. This results have been discussed based on a collision complex model involving multipole interaction potential.
- High vibrationally excited state,
- V-E energy transfer,
- Rate constant,
- Cross section,
- Collision complex model
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The Study of Energy Transfer from Vibrational State to Electronic State in C₂H₄-K System