| EPSRC Reference: |
GR/M77246/01 |
| Title: |
COLLISIONAL PROCESSES IN THE GAS-PHASE AT EXTREMELY LOW TEMPERATURES |
| Principal Investigator: |
Sims, Professor IR |
| Other Investigators: |
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| Project Partners: |
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| Department: |
School of Chemistry |
| Organisation: |
University of Birmingham |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1999 |
Ends: |
31 March 2004 |
Value (£): |
322,057
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| EPSRC Research Topic Classifications: |
| Gas & Solution Phase Reactions |
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| EPSRC Industrial Sector Classifications: |
| Chemicals |
Environment |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Collisional processes occurring at extremely low temperatures are of fundamental importance, and of relevance to physico-chemical models of dense interstellar clouds and planetary atmospheres. Experiments using laser-induced fluorescence (LIF) detection are restricted in their application, and do not, in general, yield information about absolute concentrations. Instead, we propose to detect species in the ultra-cold CRESU flow by infrared tuneable diode laser adsorption spectroscopy (IR-TDLAS). This should enable us to open up three new areas hitherto closed to study using LIF. The determination of product branching ratios at low temperatures, will not only be of fundamental interest, as no such measurements have been made below 200 K, but will also provide vital information for models of low temperatures gas-phase environments. The study of the kinetics of formation of weakly bound species, such as dimers bound by van der Waals forces, or hydrogen bonds, will be our second target. Such processes represent the first stages of condensation, and yet are very poorly understood. Finally, we intend to use IR-TDLAS detection to study rotational energy transfer in species of astrophysical importance such as CO and ammonia, where rotational energy transfer is especially important in view of their use as astrophysical molecular thermometers.
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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.bham.ac.uk |