Electron density diagnostics for Ca XV in Tokamak plasmas
F P Keenan; K M Aggarwal; K A Berrington; F P Keenan; Dept. of Pure & Appl. Phys., Queen's Univ. of Belfast, UK; K M Aggarwal; Dept. of Pure & Appl. Phys., Queen's Univ. of Belfast, UK; K A Berrington; Dept. of Pure & Appl. Phys., Queen's Univ. of Belfast, UK
Журнал:
Journal of Physics B: Atomic, Molecular and Optical Physics
Дата:
1988-02-28
Аннотация:
Recent R-matrix calculations of electron excitation rates for transitions in Ca XV are used to derive the theoretical density-sensitive emission line ratios R<sub>1</sub>=I(161.01 AA)/I(144.31 AA) and R<sub>2</sub>=I(141.69 AA)/I(144.31 AA), which are suitable as diagnostics for values of N<sub>e</sub> ( approximately=10<sup>12</sup>-10<sup>15</sup> cm<sup>-3</sup>) typical of Tokamak plasmas. A comparison of the authors' results with observed R<sub>1</sub> and R<sub>2</sub> ratios for the TEXT Tokamak plasma reveals excellent agreement between theory and observation, thereby providing support for the accuracy of the atomic data adopted in the analysis.
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