Time-resolved infrared absorption studies of the dynamics of radical reactions.

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There is very little information available about the dynamics of radical+radical interactions. These processes are important in combustion being chain termination steps as well as generating new molecular species. To study these processes, a new experimental apparatus has been constructed to investigate radical-radical dynamics. The first radical or atomic species is produced with a known concentration in a microwave discharge flow system. The second is produced by pulsed laser photolysis of a suitable photolyte. The time dependence of individual rovibrational states of the product is followed by absorption of a continuous infrared laser. This approach will allow the reaction of ... continued below

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5 p.

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MacDonald, R. G. March 6, 1998.

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Description

There is very little information available about the dynamics of radical+radical interactions. These processes are important in combustion being chain termination steps as well as generating new molecular species. To study these processes, a new experimental apparatus has been constructed to investigate radical-radical dynamics. The first radical or atomic species is produced with a known concentration in a microwave discharge flow system. The second is produced by pulsed laser photolysis of a suitable photolyte. The time dependence of individual rovibrational states of the product is followed by absorption of a continuous infrared laser. This approach will allow the reaction of interest to be differentiated from other radical reactions occurring simultaneously. The experimental approach is highly versatile, being able to detect a number of molecular species of particular interest to combustion processes such as water, methane, acetylene etc. at the state specific level. State specific infrared absorption coefficients of radicals can be measured in situ allowing for the determination of the absolute concentrations and hence branching ratios for reactions having multiple reaction pathways.

Physical Description

5 p.

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OSTI as DE00010676

Medium: P; Size: 5 pages

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  • 20th Annual Combustion Research Conference, Dallas, TX (US), 03/29/1998--04/02/1998

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  • Report No.: ANL/CHM/CP-95839
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10676
  • Archival Resource Key: ark:/67531/metadc626445

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Office of Scientific & Technical Information Technical Reports

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  • March 6, 1998

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 11, 2017, 12:30 p.m.

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MacDonald, R. G. Time-resolved infrared absorption studies of the dynamics of radical reactions., article, March 6, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc626445/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.