| タイトル | ECCO: Th/U/Pu/Cm Dating of Galactic Cosmic Ray Nuclei |
| 著者（英） | Whitaker, Ann F.; Weaver, B. A.; Adams, J. H.; Solarz, M.; Mitchell, J. W.; Dominquez, G.; Binns, W. R.; Craig, N.; Westphal, A. J.; Barbier, L. M.; Christian, E. R. |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2001-01-01 |
| 言語 | eng |
| 内容記述 | The ECCO (Extremely-heavy Cosmic-ray Composition Observer) instrument is one of two instruments which comprise the HNX (Heavy Nuclei Explorer) mission. The principal goal of ECCO is to measure the age of galactic cosmic ray nuclei using the actinides (Th, U, Pu, Cm) as clocks. As a bonus, ECCO will search with unprecedented sensitivity for long-lived elements in the superheavy island of stability. ECCO is an enormous array (23 sq. m) of BP-1 glass track-etch detectors, and is based on the successful flight heritage of the Trek detector which was deployed externally on Mir. We present a description of the instrument, estimates of expected performance, and recent calibrations which demonstrate that the actinides can be resolved from each other with good charge resolution. |
| NASA分類 | Space Radiation |
| 権利 | Copyright |
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