Measurements of the Ultra-Heavy Galactic Cosmic-Ray Abundances between Z=30 and Z=40 with the TIGER Instrument

• Main Authors: Link, J. T., Barbier, L. M., Binns, W. R., Christian, E. R., Cummings, J. R., de Nolfo, G. A., Geier, S., Israel, M. H., Mewaldt, R. A., Mitchell, J. W., Schindler, S. M., Scott, L. M., Stone, E. C., Streitmatter, R. E., Waddington, C. J.
• Other Authors: Kajita, Takaaki, Asaoka, Y., Kawachi, A., Matsubara, Y., Sasaki, M.
• Format: Book Part
• Language: unknown
• Published: International Union of Applied Physics 2003
• Subjects: Antarc*; Antarctica
• Online Access: https://authors.library.caltech.edu/56334/; https://authors.library.caltech.edu/56334/1/2003-41.pdf; https://resolver.caltech.edu/CaltechAUTHORS:20150403-091555049

The Trans-Iron Galactic Element.Recorder (TIGER) instrument was launched in December 2001 from McMurdo, Antarctica. TIGER is a cosmic-ray telescope that uses four scintillation counters, two Cherenkov detectors and a scintillating fiber hodoscope to determine the charge (Z) and energy of a particle. During the 31.8 day flight it measured ~100 ultra-heavy galactic cosmic-ray (GCR) events with Z > 30 and demonstrated charge resolution sufficient to resolve the individual elemental abundances in this region. The abundances of the Ultra-Heavy GCRs in this range can be used to distinguish between GCR source models. We present our measurements and discuss the implications for the GCR source.