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  State-to-state rate constants for collision induced energy transfer of electronically excited NH2 with NH3

Lindner, J., & Wilhelm, R. (2002). State-to-state rate constants for collision induced energy transfer of electronically excited NH2 with NH3. Journal of Chemical Physics, 117(10), 4878-4888. Retrieved from http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JCPSA6000117000010004878000001&idtype=cvips&prog=normal&doi=10.1063/1.1497965.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-F2FB-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-93CA-5
Genre: Journal Article

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 Creators:
Lindner, J.1, Author              
Wilhelm, R., Author
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1Research Group of Biomolecular and Chemical Dynamics, MPI for biophysical chemistry, Max Planck Society, ou_578553              

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 Abstract: Collisional energy transfer of NH2 in its electronically excited state (A) over tilde (2)A(1) is investigated with time- resolved Fourier transform emission spectroscopy. NH2 is produced by photodissociation of NH3 and relaxed to low rotational levels before excitation into the electronically excited state. Originating from collisions with NH3, rate constants for total collisional removal and state-to-state rate constants for rotational energy transfer within v(2)=4, K-a=1 with collision induced changes of \DeltaK(c)\less than or equal to3 are determined. The latter rate constants are fitted with several scaling laws. Among these, those based on the energy corrected sudden approximation work best. An approximate potential curve for the anisotropic part of the interaction potential is derived and verified with cross sections obtained with straight line trajectories. The rotational energy transfer originates primarily from collisions with small impact parameters. The observed rate constants for total collisional removal are in accordance with the collision complex model. (C) 2002 American Institute of Physics.

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Language(s): eng - English
 Dates: 2002-09-08
 Publication Status: Published in print
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 Rev. Method: Peer
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Title: Journal of Chemical Physics
Source Genre: Journal
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Pages: - Volume / Issue: 117 (10) Sequence Number: - Start / End Page: 4878 - 4888 Identifier: -