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  Beam study of the luminescent E-E energy transfer reaction Kr(3P2)+N2 --> Kr+N2(B 3Πg) at high resolution and variable collision energy

Bachmann, R., Ehlich, R., Ottinger, C., Rox, T., & Sadeghi, N. (2002). Beam study of the luminescent E-E energy transfer reaction Kr(3P2)+N2 --> Kr+N2(B 3Πg) at high resolution and variable collision energy. Journal of Physical Chemistry A, 106(36), 8328-8338.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-1757-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-1758-4
Genre: Journal Article

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 Creators:
Bachmann, R.1, Author
Ehlich, R.1, Author
Ottinger, C.2, Author              
Rox, T.1, Author
Sadeghi, N., Author
Affiliations:
1Max Planck Society, ou_persistent13              
2Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063285              

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 Abstract: Colliding a beam of metastable Kr atoms with an N2 gas target, the resulting N2(B 3Πg --> A 3Σu+) emission was observed with a spectral resolution of up to 0.15 nm fwhm. Optical multichannel detection was employed, using a cooled diode array detector. This allowed the first rotationally well- resolved product emission spectra from the Kr*+N2 reaction to be obtained. Also, the beam energy was varied between 69 and 191 meV(CM) by seeding with H2. The rovibrational product distributions were derived from spectral simulations. In agreement with the literature, nonresonant (exothermic) E-E transfer was observed, populating the vibrational levels N2(B,ν'=4-12). This broad distribution was found to be essentially independent of the collision energy. The product rotation could be well described by Boltzmann distributions with Trot = 1300-1050 K for ν' = 5-12 at low and 1750-1400 K at high collision energy. A discussion of the reaction mechanism is given in terms of two alternative models, involving either an intermediate ion pair formation or a direct covalent curve crossing. Comparisons are made with the related reactions of Ar and Xe metastables.

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Language(s): eng - English
 Dates: 2002-09-12
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 13435
ISI: 000177876500015
 Degree: -

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Title: Journal of Physical Chemistry A
  Alternative Title : J. Phys. Chem. A
Source Genre: Journal
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Pages: - Volume / Issue: 106 (36) Sequence Number: - Start / End Page: 8328 - 8338 Identifier: ISSN: 1089-5639