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Stochastic acceleration of solar flare protons
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Barbosa, D. D. |
| Copyright Year | 1978 |
| Description | The acceleration of solar flare protons is considered by cyclotron damping of intense Alfven wave turbulence in a magnetic trap. The energy diffusion coefficient is computed for a near-isotropic distribution of super-Alfvenic protons and a steady-state solution for the particle spectrum is found for both transit-time and diffusive losses out of the ends of the trap. The acceleration time to a characteristic energy approximately 20 Mev/nucl can be as short as 10 sec. On the basis of phenomenological arguments an omega/2 frequency dependence for the Alfven wave spectrum is inferred. The correlation time of the turbulence lies in the range .0005 less than tau/corr less than .05s. |
| File Size | 1004004 |
| Page Count | 37 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780012103 |
| Archival Resource Key | ark:/13960/t6vx5572k |
| Language | English |
| Publisher Date | 1978-03-01 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Solar Flares Magnetohydrodynamic Turbulence Stochastic Processes Cyclotron Resonance Magnetically Trapped Particles Particle Acceleration Solar Protons 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 |
