GAMMA-RAY PENETRATION INTO THE COMPARTMENTS OF A LIGHT AIRCRAFT CARRIER. Paper 18 of PAPERS FROM SEVENTH SEMIANNUAL SHIELDING INFORMATION MEETING, OCTOBER 14-15, 1959
The penetration of gamma rays into compartments of an aircraft carrier from three radioisotopes was measured. Co/sup 60/ (1.25 Mev), Cs/sup 137/ (0.66 Mev), and Ir/sup 192/ (0.38 Mev) sou rces were exposed at numerous points on the flight deck, and Landsverk air-wall equivalent dosimeters were used to measure dose in two general areas of the ship and at three different deck levels. Average dose rates and transmission factors were calculated by integration of the data to represent the case of uniform contamination of 1 curie per square foot. Point source data were compared with data taken using a uniformly distributed source. Effective shielding thicknesses of a ship's structure were determined from experimental data and compared with known structural thicknesses. Energy dependence of the shielding effectiveness can be adequately determined by using attenuation coefficients and build-up factors for the energies involved. (auth)
- Research Organization:
- Naval Radiological Defense Lab., San Francisco
- NSA Number:
- NSA-15-010337
- OSTI ID:
- 4096458
- Report Number(s):
- TID-6302(Paper 18)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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