| タイトル | XUV spectrum of C I observed from Skylab during a solar flare |
| 著者（英） | Doschek, G. A.; Moore, C. E.; Brown, C. M.; Rosenberg, F. D.; Feldman, U. |
| 著者所属（英） | Hulburt (E. O.) Center for Space Research |
| 発行日 | 1976-08-01 |
| 言語 | eng |
| 内容記述 | A list of 193 neutral carbon lines observed in the XUV spectrum of a solar flare between 100 and 2000 A using the normal incidence spectrograph flown on Skylab is presented. Of these, 69 are newly identified lines arising from transitions from upper levels of high quantum number where the quantum number is not less than six. The new lines have allowed the determination of 63 new energy levels. Wavelengths for an additional 109 transitions were calculated by polynomial fitting using reference wavelengths of unblended neutral carbon, Si, N, and S lines emitted in the same atmospheric regions of the flare. The calculated lines falling between 1102 and 1140 A were not observed due to low instrumental efficiency at these wavelengths. The calculated wavelengths are in excellent agreement with those of Johansson (1965). It appears that in solar spectra recombination processes are dominant, enhancing the populations of the high quantum levels relative to the populations of levels with small quantum numbers. |
| NASA分類 | SOLAR PHYSICS |
| レポートNO | 76A40883 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/442289 |
|
