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K-alpha x-rays from cosmic ray oxygen. [detection and calculation of equilibrium charge fractions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Pravdo, S. H. Boldt, E. A. |
| Copyright Year | 1975 |
| Description | Equilibrium charge fractions are calculated for subrelativistic cosmic ray oxygen ions in the interstellar medium. These are used to determine the expected flux of K-alpha rays arising from atomic processes for a number of different postulated interstellar oxygen spectra. Relating these results to the diffuse X-ray background measured at the appropriate energy level suggests an observable line feature. If the flux of low energy cosmic ray oxygen is sufficiently large, K-alpha X-ray line emission from these nuclei will comprise a significant fraction of the total diffuse flux at approximately 0.6 keV. A satellite borne detector with a resolution greater than 30 percent could observe this feature if the subrelativistic interstellar cosmic ray oxygen spectrum is as large as certain theoretical estimates expressed in the text. |
| File Size | 554584 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750014178 |
| Archival Resource Key | ark:/13960/t7wm62b50 |
| Language | English |
| Publisher Date | 1975-02-01 |
| Access Restriction | Open |
| Subject Keyword | Space Radiation Interstellar Radiation Particle Flux Density Emission Spectra Spectrum Analysis X Ray Spectra Oxygen Ions Relativistic Particles Cosmic Rays Oxygen Spectra X Ray Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
