ISSN:
1573-093X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Theoretical electron-temperature-sensitive Mgix emission line ratios are presented forR I =I(443.96 Å)/I(368.06 Å),R 2 =I(439.17 Å)/I(368.06 Å),R 3 =I(443.37 Å)/I(368.06 Å),R 4 =I(441.22 Å)/I(368.06 Å), andR 5 =I(448.28 Å)/I(368.06 Å). A comparison of these with observational data for a solar active region, obtained during a rocket flight by the Solar EUV Rocket Telescope and Spectrograph (SERTS), reveals excellent agreement between theory and observation forR 1 throughR 4, with discrepancies that average only 9%. This provides experimental support for the accuracy of the atomic data adopted in the line ratio calculations, and also resolves discrepancies found previously when the theoretical results were compared with solar data from the S082A instrument on boardSkylab. However in the case ofR 5, the theoretical and observed ratios differ by almost a factor of 2. This may be due to the measured intensity of the 448.28 Å line being seriously affected by instrumental effects, as it lies very close to the long wavelength edge of the SERTS spectral coverage (235.46−448.76 Å).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00690618
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