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Observations of cosmic-ray modulations in the fall, 1984
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Vainikka, E. Lumme, M. Peltonen, J. Torsti, J. J. Valtonen, E. Nieminen, M. Arvela, H. |
| Copyright Year | 1985 |
| Description | Modulation of cosmic-ray energy spectrum was studied by using the Turku double neutron monitor. The multiplicity region of detected neutrons produced by cosmic ray hadrons in the monitor was divided into seven categories corresponding to mean energies 0.1, 0.3, 1.0, 3.2, 8.6, 21, and 94 GeV of hadrons at sea level. Based on 24-hour frequencies, a statistical analysis showed that modulation of the intensity in all categories occurred during several periods in the fall 1984. The magnitude of the variation was a few per cent. |
| File Size | 177597 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850026756 |
| Archival Resource Key | ark:/13960/t3jx37x9c |
| Language | English |
| Publisher Date | 1985-08-01 |
| Access Restriction | Open |
| Subject Keyword | Space Radiation Hadrons Frequency Modulation Statistical Analysis Energy Spectra Sea Level Periodic Variations Cosmic Rays Neutron Counters Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
