The Comparison of Helium-Like Ion Emission Line Ratios with Solar X-Ray Spectral Data
1988 ◽
Vol 102
◽
pp. 331-334
Keyword(s):
X Ray
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AbstractElectron impact excitation rates recently calculated by Keenan, McCann and Kingston for transitions in the He-like ions Al XII, Si XIII and S XV are used to derive the electron temperature sensitive emission line ratio G and the density sensitive ratio R in its low density limit (Ro). These ratios are compared with those calculated by other authors and with the values obtained for solar flares using instruments on board the P78-1 and Solar Maximum Mission satellites. In general it is found that our results resolve discrepancies which currently exist between observation and theory, which provides experimental support for the methods and atonic data adopted in the present analysis.
Philosophical Transactions of the Royal Society of London Series A Physical and Engineering Sciences
◽
1991 ◽
Vol 336
(1643)
◽
pp. 471-484
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Keyword(s):
X Ray
◽
Philosophical Transactions of the Royal Society of London Series A Physical and Engineering Sciences
◽
1991 ◽
Vol 336
(1643)
◽
pp. 389-400
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Keyword(s):
X Ray
◽
2015 ◽
Vol 635
(5)
◽
pp. 052039
Keyword(s):
Philosophical Transactions of the Royal Society of London Series A Physical and Engineering Sciences
◽
1991 ◽
Vol 336
(1643)
◽
pp. 323-323
Keyword(s):