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Neutron propagation and 2.2 mev gamma-ray line production in the solar atmosphere
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ramaty, R. Wang, H. T. |
| Copyright Year | 1974 |
| Description | The 2.2 MeV gamma ray line intensity from the sun was calculated using a Monte Carlo method for neutron propagation in the solar atmosphere. Detailed results are provided on the total gamma ray yield per neutron and on the time profile of the 2.2 MeV line from an instantaneous and monoenergetic neutron source. The parameters which have the most significant effects on the line intensity are the energies of the neutrons, the position of the neutron source on the sun, and the abundance of He-3 in the photosphere. For an isotropic neutron source which is not too close to the limb of the sun, the gamma ray yield is between about 0.02 to 0.2 photons per neutron, provided that the neutron energies are in the range 1 to 100 MeV and the ratio He-3/H is less than about .00005. |
| File Size | 389446 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740007363 |
| Archival Resource Key | ark:/13960/t6h17sk9k |
| Language | English |
| Publisher Date | 1974-01-01 |
| Access Restriction | Open |
| Subject Keyword | Space Radiation Gamma Rays Neutron Scattering Neutron Sources Solar Atmosphere Line Spectra Monte Carlo Method Solar Neutrons 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 |
