GCR Spectrum Peak Energy: 1-10 GeV/nucleon | Source

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Discussion Overview

The discussion revolves around the peak energy of the Galactic Cosmic Ray (GCR) spectrum, specifically questioning whether it lies within the 1-10 GeV/nucleon range and seeking reliable sources for this information.

Discussion Character

  • Exploratory, Debate/contested, Technical explanation

Main Points Raised

  • One participant asserts that the peak of the GCR spectrum is in the 1-10 GeV/nucleon range and requests a quotable source.
  • Another participant references a source claiming that the GCR spectrum peaks near 300 MeV, suggesting a different perspective on the peak energy.
  • A third participant notes that the referenced data pertains to particle count through 1.27 mm of Aluminum and expresses uncertainty about the actual peak of the GCR spectrum, mentioning Gaisser's book and its potentially misleading plots.
  • A fourth participant suggests looking into Stecker's work or the references he cites for additional information.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the peak energy of the GCR spectrum, with multiple competing views presented regarding the correct value and sources.

Contextual Notes

There are limitations regarding the clarity of the sources cited and the definitions of peak energy, as well as potential ambiguities in the data referenced by participants.

Norman
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Does anyone know the peak(or the energy at which the flux is the greatest) of the GCR spectrum? And a quotable source for that. I am pretty sure it is in the 1-10 GeV/nucleon range.
thanks
 
Physics news on Phys.org
This page says thaty the GCR (Galactic cosmic Ray) spectrum peaks near 300 MeV
www.ngst.nasa.gov/cgi-bin/pubdownload?Id=649[/URL]
 
Last edited by a moderator:
Actually that data seems to be the particle count through 1.27 mm of Aluminum. Although I am trying to look up their reference for it. So it appears that I am still trying to find what the actual peak of the GCR is. In Gaisser's book he has a couple of plots but I am trying to verify them to myself since they are slightly misleading I think.
So if anyone can offer some more help I would appreciate it.
Cheers
 

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