Electron-impact excitation of Xe26+ and its resultant spectral signature

Badnell, N.R. and Berrington, K.A. and Summers, H.P. and O'Mullane, M.G. and Whiteford, A.D. and Ballance, C.P. (2004) Electron-impact excitation of Xe26+ and its resultant spectral signature. Journal of Physics B: Atomic, Molecular and Optical Physics, 37 (23). pp. 4589-4601. ISSN 0953-4075

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Abstract

We have carried out a 129 close-coupling level Dirac-Coulomb R-matrix calculation for the electron-impact excitation of Ni-like Xe. We have utilized this data to generate the spectral signature of Xe26+ in terms of feature photon-emissivity coefficients F-P ECs. We have compared these F-P ECs with those generated using semi-relativistic plane-wave Born excitation data, which forms the heavy species baseline for the Atomic Data and Analysis Structure (ADAS). We find that the Born-based F-P ECs give a reasonable qualitative description of the spectral signature but that, quantitatively, the R-matrix-based F-P ECs differ by up to a factor of 2. The spectral signature of heavy species is key to diagnosing hot plasmas such as will be found in the International Thermonuclear Experimental Reactor.

Item type:	Article
ID code:	2985
Keywords:	plasmas, spectral signature, Xe26+, Plasma physics. Ionized gases, Atomic and Molecular Physics, and Optics, Condensed Matter Physics
Subjects:	Science > Physics > Plasma physics. Ionized gases
Department:	Faculty of Science > Physics
Depositing user:	Mr Derek Boyle
Date deposited:	07 Mar 2007
Last modified:	22 Mar 2017 09:20
URI:	https://strathprints.strath.ac.uk/id/eprint/2985
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