| EPSRC Reference: |
GR/M08554/01 |
| Title: |
SHORT PULSE LASER INTERACTIONS WITH POSITIVE IONS AND MOLECULES |
| Principal Investigator: |
Williams, Professor ID |
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| Department: |
Sch of Mathematics and Physics |
| Organisation: |
Queen's University of Belfast |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 September 1998 |
Ends: |
31 August 2000 |
Value (£): |
53,637
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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This is an investigation of the interaction of intense (~1017w/cm2 ) laser radiation (800 nm) with molecules and positive molecular ions by MEDI. Although all natural molecular rotational and most vibrational motion is frozen in a 50 fs pulse the molecule will interest dynamically with the laser field. This produces orbital distortions resulting in molecular stretching to new equilibrium positions (~2 xRo) and induced bending in which a linear (q = 180o) molecule can bend to q = 90o before dissociating. In addition, molecular re-alignments, resulting from the anistropic polarization, produces fragmenting ions along directions orthogonal to the molecular symmetry axis Cn. This research is in a study of these dynamical interactions within high density laser fields directly observing the angular distributions of fragmentation molecular ions and by initially preparing molecules in a distribution of excited vibrational states. We also seek to determine the role of primary single molecular ionization in the laser field by producing independently a beam of molecular positive ions. This will aid the distinction between sequential and non-sequential multi-electron ionization.
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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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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.qub.ac.uk |