Zobrazeno 1 - 10 of 33 pro vyhledávání: '"A. D. Whiteford"'
1
R-matrix electron-impact excitation data for B-like Si and its application in cool stars
Autor: A. D. Whiteford, Guiyun Liang, N. R. Badnell
Publikováno v: Astronomy & Astrophysics. 499:943-954
We present the results of an intermediate coupling frame-transformation R-matrix calculation for the electron-impact excitation of Si 9+ . The target and close-coupling expansions are both taken to be the 125 fine-structure levels (58 LS terms) belon
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e9df5c5ea01722eed309a8f29fb10dd6
https://doi.org/10.1051/0004-6361/200811423
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2
R-matrix electron-impact excitation calculations along the F-like iso-electronic sequence
Autor: A. D. Whiteford, M. C. Witthoeft, N. R. Badnell
Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 40:2969-2993
We present results for the electron-impact excitation of F-like ions from Ne+ to Kr27+ using an R-matrix approach where the intermediate-coupling frame transformation method has been used to obtain level-resolved collision strengths. For each calcula
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bf6c3cfa352964dd98bf3c414ca47238
https://doi.org/10.1088/0953-4075/40/15/001
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3
Ionization state, excited populations and emission of impurities in dynamic finite density plasmas: I. The generalized collisional–radiative model for light elements
Autor: N. R. Badnell, J. Lang, W. J. Dickson, David H. Brooks, D. C. Griffin, H. P. Summers, Stuart Loch, M. G. O'Mullane, A. D. Whiteford
Publikováno v: Plasma Physics and Controlled Fusion. 48:263-293
The paper presents an integrated view of the population structure and its role in establishing the ionisation state of light elements in dynamic, finite density, laboratory and astrophysical plasmas. There are four main issues, the generalised collis
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60648404c6e5694df9d6b50e471b5594
https://doi.org/10.1088/0741-3335/48/2/007
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5
Electron-impact excitation of Xe26+and its resultant spectral signature
Autor: N. R. Badnell, A. D. Whiteford, C. P. Ballance, Hugh Summers, M. G. O'Mullane, K A Berrington
Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 37:4589-4601
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 coefficie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::406bb63e276a43cbdd5933eeb1cc9437
https://doi.org/10.1088/0953-4075/37/23/002
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6
Tritium transport experiments on the JET tokamak
Autor: L. Garzotti, Pierre Dumortier, Sean Conroy, J. H. Brzozowski, T. C. Hender, A. D. Whiteford, P. Belo, H. Weisen, C. D. Challis, J. Ongena, R. Neu, D. C. McDonald, J. Mailloux, J. M. Adams, M. de Baar, D. Stork, M. F. F. Nave, M. Valovic, J. Stober, P. de Vries, M. G. O'Mullane, A. Zabolotsky, K-D. Zastrow, Jorge Ferreira, E. Joffrin, I. Voitsekhovitch, L. Bertalot, M. Stamp, Jet-Efda Contributors, Vasily Kiptily, Y. Baranov, S. Popovichev
Publikováno v: Plasma Physics and Controlled Fusion. 46:B255-B265
An overview is given of the experimental method, the analysis technique and the results for trace tritium experiments conducted on the JET tokamak in 2003. Observations associated with events such as sawtooth collapses, neo-classical tearing modes an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bf93cb1ba7e529ecb2966dd9d5fd80d3
https://doi.org/10.1088/0741-3335/46/12b/022
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7
Dielectronic recombination data for dynamic finite-density plasmas
Autor: James Colgan, N. R. Badnell, M. S. Pindzola, A. D. Whiteford
Publikováno v: Astronomy & Astrophysics. 412:597-601
Dielectronic recombination data for the beryllium isoelectronic sequence has been calculated as part of the assembly of a dielectronic recombination database necessary for modelling of dynamic finite-density plasmas (Badnell et al. 2003, A&A, 406, 11
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bfa55029a24126a62b721dead344418a
https://doi.org/10.1051/0004-6361:20031362
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8
Diagnostic exploitation of complex heavy elements in tokamak plasmas
Autor: M. G. O’Mullane, H. P. Summers, A. D. Whiteford, R. Barnsley, I. H. Coffey, G. Counsell, S. Loch, Contributors to the EFDA-JET Work Program
Publikováno v: Review of Scientific Instruments. 74:2080-2083
In future burning plasma experiments, a promising method for the diagnosis of first wall erosion is to detect the onset of emission from nonintrinsic materials embedded in the plasma facing components as they are revealed and enter the confined plasm
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1e3fa8bc8fd0716aced3903520ecb60a
https://doi.org/10.1063/1.1537040
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9
Excitation of Ar15 and Fe23 for diagnostic application to fusion and astrophysical plasmas
Autor: Connor Ballance, N. R. Badnell, M. G. O'Mullane, A. D. Whiteford, H. P. Summers, Stuart Loch
Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 35:3729-3740
Electron-impact excitation collision strengths for transitions among doubly excited levels up to the n = 3 shell (excluding the 1s 3l3l' configurations) of lithium-like argon and iron have been calculated using a radiation- and Auger-damped, intermed
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d979d94bbcc8f487d82fab4b350bc7ad
https://doi.org/10.1088/0953-4075/35/17/309
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10
A radiation-dampedR-matrix approach to the electron-impact excitation of helium-like ions for diagnostic application to fusion and astrophysical plasmas
Autor: H. P. Summers, A L Thomas, A. D. Whiteford, N. R. Badnell, M. G. O'Mullane, Connor Ballance
Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 34:3179-3191
Electron-impact excitation collision strengths for transitions between all singly excited levels up to the n = 4 shell of helium-like argon and the n = 4 and 5 shells of helium-like iron have been calculated using a radiation-damped R-matrix approach
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d79811e051c96da1e2d752953698d31c
https://doi.org/10.1088/0953-4075/34/15/320
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