| EPSRC Reference: |
GR/S56856/01 |
| Title: |
Reaction and Energy Transfer involving Free Radicals in Selected Rovibrational States |
| Principal Investigator: |
Smith, Professor I |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Chemistry |
| Organisation: |
University of Cambridge |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
24 November 2004 |
Ends: |
23 November 2006 |
Value (£): |
253,696
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| EPSRC Research Topic Classifications: |
| Gas & Solution Phase Reactions |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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| Related Grants: |
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| Panel History: |
| Panel Date | Panel Name | Outcome |
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28 Jul 2003
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Chemistry Prioritisation Panel (Science)
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Deferred
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Summary on Grant Application Form |
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Infrared-visible(IR-VIS) and infrared-ultraviolet (IR-UV) double resonance methods will be applied to study collisional processes involving the free radicals CN(X2sigma) and OH(X2pi) at the state-resolved level. In each case, the radicals will be produced by pulsed laser photolysis of a suitable precursor (ICN for CN; HNO3 for OH). Radiation from a tuneable, pulsed, IR'pump' laser will promote some sub-set of radicals to a specific (and variable) rovibrational level. A tuneable VIS or UV 'probe' laser will be used to follow the fate of these molecules as collisions occur. In the case of CN, comparisons of total rates of removal from the selected initial level to the sum of the state-to-state rates for rotational energy transfer (RET) will allow us to determine uniquely rate coefficients for reaction from selected rotational levels (N) and to examine how these rate coefficients vary with N, as well as how the branching ratio between reaction and RET vary with N. In the case of OH, we shall examine state-to-state inelastic processes, not only at the level of defined rotational levels but also in respect of lambda-doublet propensities. In both cases, we intend to collaborate with leading theoreticians in order to understand fully the factors which lead to the observed results. In addition, we expect the data for energy transfer in OH to shed light on the mechanism for the OH astronomical maser.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cam.ac.uk |