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

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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 (http://dx.doi.org/10.1088/0953-4075/37/23/002)

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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.

ORCID iDs

Badnell, N.R. ORCID logoORCID: https://orcid.org/0000-0001-7418-7996, Berrington, K.A., Summers, H.P., O'Mullane, M.G. ORCID logoORCID: https://orcid.org/0000-0002-2160-4546, Whiteford, A.D. and Ballance, C.P.;
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