Physics
Scientific paper
Apr 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aps..aprq16004l&link_type=abstract
American Physical Society, April Meeting, April 29-May 2, 2000 Long Beach, CA, abstract #Q16.004
Physics
Scientific paper
TIGER for ULDB is designed to measure the abundances of Galactic Cosmic Rays (GCRs) with 20 < Z < 40 for energies > 300 MeV/nucleon. It will be flown on a new type of super-pressure balloon which is capable of supporting a scientific payload for missions up to 100 days. TIGER will be the first instrument to measure the individual abundances of the odd-Z elements with 30 < Z < 40. Measurements of heavy odd-Z nuclei are important for distinguishing between the effects of first-ionization potential and volatility in the GCR injection process. They also provide constraints on models of nucleosynthesis and cosmic-ray propagation at short pathlengths. TIGER uses a combination of plastic scintillatiors and acrylic and aerogel Cherenkov counters to determine the Z and energy of incident cosmic rays. A coded scintillating-fiber hodoscope is used to determine trajectory. We will present the status of the TIGER instrument and the ULDB program.
Barbier Loius M.
Binns Robert W.
Christian Eric R.
Cummings Jay R.
de Nolfo Georgia Adair
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