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Solar coronal and photospheric abundances from solar energetic particle measurements
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Breneman, H. Stone, E. C. |
| Copyright Year | 1985 |
| Description | Solar energetic particle (SEP) elemental abundance data from the cosmic ray subsystem (CRS) aboard the Voyager 1 and 2 spacecraft are used to derive unfractionated coronal and photospheric abundances for elements with 3 Z or = 30. It is found that the ionic charge-to-mass ratio (Q/M) is the principal organizing parameter for the fractionation of SEPs by acceleration and propagation processes and for flare-to-flare variability, making possible a single-parameter Q/M-dependent correction to the average SEP abundances to obtain unfractionated coronal abundances. A further correction based on first ionization potential allows the determination of unfractionated photospheric abundances. |
| File Size | 208314 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850026473 |
| Archival Resource Key | ark:/13960/t0xq1w56p |
| Language | English |
| Publisher Date | 1985-08-01 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Solar Corona Solar Flares Voyager Project Abundance Ion Distribution Charge Distribution Stellar Structure Energetic Particles Ion Production Rates Photosphere Ionization Solar Atmosphere Radiation Measurement Chemical Composition Solar Cosmic Rays Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
