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Diffusion in the chromosphere and the composition of the solar corona and energetic particles
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Meyer, J. P. Vauclair, S. |
| Copyright Year | 1985 |
| Description | Composition observations, in the solar photosphere, and in the upper transition region (TR) and corona imply a change of composition of the solar atmosphere somewhere between the photosphere and the upper TR. Heavy elements with first ionization potential (FIP) 9 eV (high-FIP element) are approx. 4 times less abundant in the TR and corona than in the photosphere, as compared to both hydrogen and heavy elements with lower low-FIP elements. A separation is suggested between neutral and ionized elements in a region where the high-FIP elements are mostly neutral, and the low-FIP elements ionized. This occurs in the chromosphere at altitudes above 600 km and below 2000 km above Photosphere. Whether the diffusion processes can explain the observed change in composition is investigated. |
| File Size | 353941 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850026477 |
| Archival Resource Key | ark:/13960/t3615x42n |
| Language | English |
| Publisher Date | 1985-08-01 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Photosphere Heavy Elements Solar Corona Chromosphere Particle Diffusion Plasma Composition Hydrogen Ionization Potentials Solar Atmosphere Solar Wind Energetic Particles Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
