SECONDARY COSMIC-RAY PHOTONS BELOW CASCADE ENERGY

Journal Article · Tue Aug 15 04:00:00 EDT 1961 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.123.1435· OSTI ID:4838479

Anderson, K A

Investigations with small unshielded scintillation crystals carried through the atmosphere by balloons show large fluxes of photons in the energy region 30 to 300 kev in equilibrium with the primary cosmic ray beam. At 90 g cm/ sup -2/ depth the flux is about 22 photons cm/sup -2/ sec/sup -1/ compared with a charged particle flux determined from a Geiger tube of 1.9 cm/sup -2/ sec/sup -1/ at this same depth. The photon flux at zero depth. taken to be the albedo of this secondarv cosmic-ray component, has been estimated by extrapolation to be 8 photons cm/sup -2/ sec/sup -1/ greater than 30 kev. (auth)

• Research Organization: Univ. of California. Berkeley
• NSA Number: NSA-15-028329
• OSTI ID: 4838479
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 123; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALBEDO
ATMOSPHERE
BALLOONS
COSMIC RADIATION
CRYSTALS
EARTH
ENERGY RANGE
GEIGER-MUELLER COUNTERS
LEVELS
MEASURED VALUES
PHOTONS
PHYSICS
REFLECTION
SCINTILLATION COUNTERS