| タイトル | Polar Balloon Experiment for Astrophysics Research (Polar BEAR) |
| 著者（英） | Chilingarian, A.; Bashindzhagyan, P.; Egorov, N.; Bashindzhagyan, G.; Adams, James H., Jr.; Donnelly, J.; Grebenyuk, V.; Kalinin, A.; Golubkov, S.; Drury, L.; Whitaker, Ann F. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2001-01-01 |
| 言語 | eng |
| 内容記述 | A new balloon experiment is proposed for a long duration flight around the North Pole. The primary objective of the experiment is to measure the elemental energy spectra of high-energy cosmic rays in the region up to 10(exp 15) eV. The proposed instrument involves the combination of a large collecting area (approximately 1 x 1 square m) KLEM (Kinematic Lightweight Energy Meter) device with an ionization calorimeter having a smaller collecting area (approximately 0.5 x 0.5 square m) and integrated beneath the KLEM apparatus. This combination has several important advantages. Due to the large aperture (greater than 2 square m sr) of the KLEM device a large exposure factor can be achieved with a long duration balloon flight (2-4 weeks). The calorimeter will collect about 10% of the events already registered by KLEM and provide effective cross-calibration for both energy measurement methods. Details of the experiment and its astrophysical significance will be presented. |
| NASA分類 | Space Radiation |
| 権利 | No Copyright |
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