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ECCO: Th/U/Pu/Cm Dating of Galactic Cosmic Ray NucleiThe 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.
Document ID
20020023280
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Westphal, A. J. (California Univ. Berkeley, CA United States)
Weaver, B. A. (California Univ. Berkeley, CA United States)
Solarz, M. (California Univ. Berkeley, CA United States)
Dominquez, G. (California Univ. Berkeley, CA United States)
Craig, N. (California Univ. Berkeley, CA United States)
Adams, J. H. (NASA Marshall Space Flight Center Huntsville, AL United States)
Barbier, L. M. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Christian, E. R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Mitchell, J. W. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Binns, W. R. (Washington Univ. Saint Louis, MO United States)
Whitaker, Ann F.
Date Acquired
August 20, 2013
Publication Date
January 1, 2001
Subject Category
Space Radiation
Meeting Information
Meeting: ICRC 2001 Conference
Location: Hamburg
Country: Germany
Start Date: August 7, 2001
End Date: August 15, 2001
Distribution Limits
Public
Copyright
Other

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