An evaluation of the possibility of studying flare plasma turbulence using the satellites of He I line forbidden components
The possibility of diagnosing the flare plasma of forbidden He I lines by means of the Baranger-Mozer method is investigated, noting that such a diagnosis would make it possible to determine the plasma oscillation frequency and noise level. From an examination of the He I lines observed in a solar f...
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| Published in | Solar physics Vol. 90; pp. 269 - 279 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.02.1984
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| Online Access | Get full text |
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| Summary: | The possibility of diagnosing the flare plasma of forbidden He I lines by means of the Baranger-Mozer method is investigated, noting that such a diagnosis would make it possible to determine the plasma oscillation frequency and noise level. From an examination of the He I lines observed in a solar flare, it is found that the appearance of satellites of forbidden components in the flare spectrum caused by turbulent electric fields is the most probable for He I 3819.606 A lines. It is also found that the Baranger-Mozer method is more sensitive to the high-frequency component of turbulent fields than to the low-frequency ones. An evaluation is made of the upper limit of the turbulent oscillation level in flares. Satellites of the forbidden component of the 3820 A line are detected in the spectrum of the solar flare of September 26, 1963. Its relative intensity is then used to derive the level of low-frequency oscillations (approximately 1.5 kV/cm). |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 0038-0938 |
| DOI: | 10.1007/BF00173955 |