Details of Grant 

EPSRC Reference:	GR/K14346/01
Title:	THEORETICAL STUDIES OF ATOMIC COLLISION EXPERIMENTS
Principal Investigator:	Badnell, Professor N
Other Investigators:
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Department:	Physics
Organisation:	University of Strathclyde
Scheme:	Standard Research (Pre-FEC)
Starts:	06 January 1995	Ends:	05 January 1998	Value (£):	15,836
EPSRC Research Topic Classifications:	Atoms & Ions
EPSRC Industrial Sector Classifications:
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Summary on Grant Application Form
We propose a programme of research to analyse and interpret merged-beams experiments for dielectronic recombination and ionisation to be carried out at Aarhus, Heidelberg, Stockholm and Stuttgart, as well as electron energy-loss spectroscopy experiments for excitation to be carried out at Oak Ridge and Grenoble, so as to assess our understanding of such processes. We will focus on the indirect processes which can so enhance cross sections and in particular those reactions which are strongly radiation damped, for which the standard R-matrix approach is inapplicable since the coupling to the atomic radiation field can no longer be neglected. Initial studies will make use of the independent processes and isolated resonance approximations since they take radiation damping into account explicitly. The interference between resonant and non-resonant processes is negligible for recombination and decreases rapidly with increasing charge state for excitation and ionisation. Thus, we propose to investigate interacting resonance effects both in connection with existing discrepancies between theory and experiment for dielectronic recombination and for planned high resolution ionisation experiments, where radiation damping effects will be significant. The AUTOSTRUCTURE code will be developed to take into account the direct configuration interaction between autoionising complexes that is usually ignored. Feshbach theory will be used to develop a new general code to evaluate coupling through common electron continua, perturbatively. The results of this approach will be benchmarked against R-matrix results and experiments.
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Organisation Website:	http://www.strath.ac.uk