A high-resolution study of ultra-heavy cosmic-ray nuclei (A0178)

Details A high-resolution study of ultra-heavy cosmic-ray nuclei (A0178) A high-resolution study of ultra-heavy cosmic-ray nuclei (A0178)

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ldef.rept..101o&link_type=abstract

In NASA. Langley Research Center Long Duration Exposure Facility (LDEF) p 101-104 (SEE N84-24632 15-15)

Computer Science

Cosmic Rays, Heavy Nuclei, Particle Tracks, Spaceborne Experiments, Spectra, Long Duration Exposure Facility, Nuclear Fusion, Particle Acceleration

Scientific paper

The main objective of the experiment is a detailed study of the charge spectra of ultraheavy cosmic-ray nuclei from zinc (Z = 30) to uranium (Z = 92) and beyond using solid-state track detectors. Special emphasis will be placed on the relative abundances in the region Z or - 65, which is thought to be dominated by r-process nucleosynthesis. Subsidiary objectives include the study of the cosmic-ray transiron spectrum a search for the postulated long-lived superheavy (SH) nuclei (Z or = 110), such as (110) SH294, in the contemporary cosmic radiation. The motivation behind the search for super-heavy nuclei is based on predicted half-lives that are short compared to the age of the Earth but long compared to the age of cosmic rays. The detection of such nuclei would have far-reaching consequences for nuclear structure theory. The sample of ultraheavy nuclei obtained in this experiment will provide unique opportunities for many tests concerning element nucleosynthesis, cosmic-ray acceleration, and cosmic-ray propagation.

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