What are the Limits for ace Galactic Cosmic-ray Isotope Studies?

Details What are the Limits for ace Galactic Cosmic-ray Isotope Studies? What are the Limits for ace Galactic Cosmic-ray Isotope Studies?

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ssrv...86..239w&link_type=abstract

Space Science Reviews, v. 86, Issue 1/4, p. 239-256 (1998).

Computer Science

5

Scientific paper

The CRIS experiment on ACE, with its excellent charge and mass resolution and a geometrical factor ˜10× that of any previous experiment, holds the promise of rewriting the book on galactic cosmic-ray abundance studies. Translating these measurements into precise cosmic-ray source abundances and using these measurements to determine more accurately the propagation history of cosmic rays is a different matter, however. In many important cases these studies will be limited by the accuracy of the nuclear cross- sections that determine how the cosmic-ray composition is modified as it traverses the interstellar matter. In this paper we will discuss these cross-sections and how well they are known as a function of the energy and the charge and mass of the cosmic-ray nuclei. This will then be used to discuss what new limits can be expected on several contemporary problems of interest in cosmic rays from the CRIS measurements.

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