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- W1502802511 abstract "A Total Activity Detector for air samples was designed to provide the means whereby individual absorption correction factors for alpha and weak beta counting of filter papers are automatically accounted for and integrated into a final measurement. Criteria for effective air sampling were developed. The development of the individual beta pocket dosimeter led to the design, construction, and evaluation of a combined beta, gamma, and thermal neutron pocket dosimeter. The latter dosimeter, called a Universal Pocket Dosimeter, can also be adapted to eye and hand monitoring. A total neutron personnel dosimeter was designed to detect thermal and fast neutrons. Experimental and theoretical analyses of the total neutron dosimeter are in progress. To aid in the development of thermal neutron dosimeters, the Sigma Pile Substitute, a water- moderated thermal neutron calibration facility, was calibrated with Ra-Be and Pu- Be sources. Dose rates of 0.18 and 0.56 mrem/hr can be detected in this unit, with sources of 50.8 mg Ra-Be and 15.19 gm Fu-Be, respectively. Studies were continued to determine the rate of accumulation and the distribution of radioactive materials in aquatic life as related to radioactive materials released into a surface stream. The data indicate that specimens of fry are themore » most sensitive specimens of those analyzed with respect to reflecting the transient concentrations of radioactive materials in the stream. An ion exchange analysis was established for Sr/sup 90/ in water -concentrations of greater than 3 x 10/sup -10/ mu c Sr/sup 90//cc water can be detected. This procedure was adapted to Mohawk River monitoring. Studies of the activity in the edible portion of fish tissue have indicated the average K/sup 40/ concentration to be approximately 7 d/m/gm of tissue. Improvements in the area of reactor safeguards were concentrated on the development of less restrictive and more realistic exclusion area formulas and on the summarization of reactor risks. (For preceding period see KAPL-1887.) (auth)« less" @default.
- W1502802511 created "2016-06-24" @default.
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- W1502802511 date "1959-10-31" @default.
- W1502802511 modified "2023-09-27" @default.
- W1502802511 title "RADIOLOGICAL DEVELOPMENT ACTIVITIES IN HEALTH PHYSICS. Semiannual Progress Report for January-June 1957" @default.
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