On the high energy proton spectrum measurements

Details On the high energy proton spectrum measurements On the high energy proton spectrum measurements

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..52..415e&link_type=abstract

Astrophysics and Space Science, vol. 52, no. 2, Dec. 1977, p. 415-427. Research supported by the University of Maryland

Astronomy and Astrophysics

Astrophysics

10

Energy Spectra, Inelastic Scattering, Proton Energy, Scattering Cross Sections, Albedo, Backscattering, Calorimeters

Scientific paper

Reasons are considered for the steepening of the cosmic-ray proton spectrum above 1000 GeV and the 20% increase in inelastic cross sections of protons on carbon and polyethylene nuclei between 20 and 600 GeV observed in the Pronton 1, 2, and 3 satellite experiments. It is shown that these unexpected observations can arise as consequences of energy-dependent albedo (backscatter) from the calorimeter used in the experiments. The experimental apparatus employed is described along with an experimental setup for studying the albedo from the calorimeter, and experimental results are presented concerning the magnitude and energy variation of the albedo. The effects this albedo could have on the proton spectrum and cross-section measurements of the Proton experiments are estimated. The origin and nature of the albedo particles are briefly investigated.

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