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Impulsive phase of solar flares. 1: characteristics of high energy electrons
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Leach, J. Petrosian, V. |
| Copyright Year | 1981 |
| Description | The variation along a magnetic field line of the energy and pitch angle distribution of high energy electrons injected into a cold hydrogen plasma containing either an open or closed magnetic field structure was investigated. The problem is formulated as a time independent Fokker-Planck Equation for the electron number distribution as a function of the electron energy, electron pitch angle, and the structure of the global magnetic field. Simple analytic solution valid in the small pitch angle regime and for slowly varying magnetic field is presented. For the more general situation a numerical code for solving the Fokker-Planck Equation was used and it was found that the analytic expression agrees well with the numerical results to values of the pitch angle much larger than expected. For most practical applications, one many confidently use the analytic expression instead of having to resort to lengthy numerical computations. These results are useful in the study of the nonthermal models of the impulsive phase of solar flares. |
| File Size | 2206450 |
| Page Count | 49 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810011460 |
| Archival Resource Key | ark:/13960/t5gb6x711 |
| Language | English |
| Publisher Date | 1981-03-01 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Solar Radio Emission Solar X-rays Solar Flares Astrophysics Cold Plasmas Hydrogen Plasma Fokker-planck Equation Specific Impulse High Energy Electrons Magnetic Fields Microwaves Pitch Inclination Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
