Accession Number:

AD0248919

Title:

PENETRATION OF PLANE NORMAL AND PLANE SLANT GAMMA RAYS THROUGH SLABS OF ALUMINUM AND STEEL. II. ANGULAR AND ENERGY SPECTRA (PHOTON NUMBER FLUX)

Descriptive Note:

Corporate Author:

NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA

Personal Author(s):

Report Date:

1960-10-25

Pagination or Media Count:

55.0

Abstract:

EXPERIMENTALLY MEASURED DIFFERENTIAL ENERGY AND ANGLE SPECTRA OF THE SCATTERED GAMMA-PHOTON NUMBER FLUX ARE PRESENTED FOR CESIUM 137 AND COBALT 60 SOURCE GAMMA RAYS NORMALLY INCIDENT UPON SLABS OF ALUMINUM ANDIRON VARYING IN THICKNESS FROM ONE TO FIVE MEAN FREE PATHS. SPECTRAL MEASUREMENTS FOR OBLIQUE ANGLES OF SOURCE PHOTON INCIDENCE WERE ALSO MADE FOR COBALT 60 AND SLABS OF IRON WITH SLANT THICKNESSES OF TWO AND FIVE MEAN FREE PATHS. DETECTION ANGLES OF 5, 10, 20, 30, 45 AND 60 DEG WERE USED. SPECTRA ARE COMPARED TO SHOW THE EFFECTS OF SLAB MATERIAL, SLAB THICKNESS, SOURCE ENERGY, DETECTION AND INCIDENCE ANGLE AS WELL AS THE PROPORTION OF SINGLE AND MULTIPLE SCATTERING. THE RESULTS WERE NORMALIZED TO A PRIMARY INCIDENT FLUX OF ONE PHOTON SQ CM SEC

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE