Other
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212..925t&link_type=abstract
Astrophysical Journal, Part 1, vol. 212, Mar. 15, 1977, p. 925-935.
Other
84
Apollo Flights, Background Radiation, Cosmic X Rays, Gamma Rays, X Ray Spectra, Apollo 16 Flight, Apollo 17 Flight, Bremsstrahlung, Energy Spectra, Error Analysis, Radiant Flux Density, Radioactivity
Scientific paper
Additional data obtained from the Apollo 16 and Apollo 17 missions, together with collateral calculations on background radiation effects, have made possible an improved subtraction of unwanted backgrounds from the diffuse cosmic gamma-ray data previously reported from Apollo 15. As a result, the 1- to 10-MeV spectrum is lowered significantly and connects smoothly with recent data at other energies. The inflection reported previously is much less pronounced and has no more than a 1.5-sigma significance. Sky occultation by the Apollo 16 spacecraft shows the bulk of the 0.3- to 1-MeV radiation to be diffuse. The analysis of spurious backgrounds points to important improvements for future experiments designed for this spectral region.
Bielefeld M. J.
Dyer C. S.
Evans Larry G.
Metzger Albert E.
Seltzer Stephen M.
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