| タイトル | Ames collaborative study of cosmic ray neutrons - Mid-latitude flights |
| 著者（英） | Rindi, A.; Hewitt, J. E.; Stephens, L. D.; Griffith, R. V.; Thomas, R. H.; Smith, A. R.; Mccaslin, J. B.; Baum, J. W.; Kuehner, A. V.; Hughes, L. |
| 著者所属（英） | NASA Ames Research Center|Brookhaven National Lab.|Lawrence Livermore National Lab.|California Univ. |
| 発行日 | 1978-04-01 |
| 言語 | eng |
| 内容記述 | Three aircraft flights at 12.5 km have yielded data on cosmic-ray neutron-flux densities, neutron dose equivalent rates, and exposure rates for ionizing radiation. The data, collected at 45, 38, and 48 degrees N, indicate: (1) neutron dose equivalent rates of 0.20, 0.14, and 0.22 mrem/hour, (2) exposure rates from the ionizing component of 0.37, 0.31, and 0.41 mR/hour, (3) that the dose equivalent from 3-13-MeV neutrons is 30% of the total for all neutrons, (4) that exposure rates decrease exponentially with decreasing pressure altitude with a 140 g/sq cm attenuation length at 43 degrees N geomagnetic latitude, and (5) that the ionizing component of cosmic ray secondaries is less sensitive to latitude changes than the neutron component. |
| NASA分類 | SPACE RADIATION |
| レポートNO | 78A42957 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/431983 |
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