Document Details

Health Physics Division Semiannual Progress Report for Period Ending July 31, 1953
Morgan, K Z [ORNL, Carbide and Carbon Chemicals Co., Oak Ridge]
Subject Terms:
health physics, ORNL; nuclear radiation, dose; radioparticulate contamination; semiannual progress report; waste disposal
Document Location:
DOE INFORMATION CENTER 1 Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email:
Document Categories:
Health, Safety and Environment\General
Document Type:
Publication Date:
1953 Jul 31
Declassification Status:
Never classified
Document Pages:
Accession Number:
Document Number(s):
ORNL-1596, Copy 12; Series A; SeriesA
Originating Research Org.:
Carbide and Carbon Chemicals Corporation
OpenNet Entry Date:
1998 Jun 16
This document contains the Health Physics Division semiannual progress report for the period ending July 31, 1953. A general method was developed for determining the number of vacant lattice sites or interstitial atoms in a monoatomic substance exposed to heavy corpuscular radiation. An experiment is in progress to determine the critical organ for Co-60, the ratio of Co-60 in the critical organ to that in the whole body, and to check the conclusion that a continuous dose of 2 x 10(-2) uc of Co-60 per cubic centimeter in drinking water consumed for a lifetime will not build up to give a weekly dose to the critical organ that is greater than the maximum permissible dose. The Spectrographic Laboratory at the University of Tennessee completed a preliminary survey of trace elements in human tissue and the results were included. Calculations of backscattering for 0.6-Mev monoenergetic beta particles showed that for scatterers with low atomic numbers (Z) normally incident particles are largely reflected by single scattering up to depths of 100 to 200 mg/cm-2. Work continued toward making the NTA film badge into a true neutron dosimeter by means of a compensated proton radiator. During this period, the Health Phyics Division resumed a study of radioparticulate air contamination at X-10. Coagulation studies were made in which the effects of the day-to-day variations, activity levels, coagulants used, and coagulant dose on the removal of specific radioisotopes was noted and results were summarized. A more recent survey showed a considerable increase in the radioactivity in river bottom sediments in the Clinch and Tennessee Rivers. All field work on the ecological survey program was discontinued. Figures and tables are included.

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