Author:
Publisher:
Published: 1963
Total Pages: 65
ISBN-13:
DOWNLOAD EBOOK →An experimental study designed to provide a basis for estimating protection against fallout radiation was made on two types of structures at the Nevada Test Site. This study was sponsored by the Civil Effects Test Operations, Division of Biology and Medicine, U. S. Atomic Energy Commission. The two buildings studied were a lightly constructed building with a basement, and an underground group shelter. An idealized fallout radiation field was simulated by the use of the Mobile Radiological Measuring Unit (MRMU). The unit employed a sealed radioactive Co(60) source that was pumped at a uniform speed through a long length of flexible tubing evenly distributed over the area of interest. Radiation levels at selected points inside the structures were measured with sensitive ionization-chamber detectors. These measurements were compared with measurements taken under actual fallout conditions at an earlier time and were also compared with the theoretical calculations. Protection factors from fallout data and MRMU data at the basement structure compared roughly within a factor of 2. This was good, considering the limitations of the two sets of data and other factors affecting the differences. Comparisons between protection factors from fallout data and MRMU data at the underground group shelter were excellent. MRMU data and theoretical calculations also compared satisfactorily.
Author:
Publisher:
Published: 1962
Total Pages:
ISBN-13:
DOWNLOAD EBOOK →An experimental study designed to provide a basis for estimating protection against fallout radiation was made on two types of structures at the Nevada Test Site. The two buildings studied were a lightly constructed building with a basement, and an underground group shelter. An idealized fallout radiation field was simulated by the use of a sealed radioactive Co6° source that was pumped at a uniform speed through a long length of flexible tubing evenly distributed over the area of interest. Radiation levels at selected points inside the structures were measured with sensitive ionization- chamber detectors. These measurements were compared with measurements taken under actual fallout conditions at an earlier time and were also compared with the theoretical calculations. Protection factors from fallout data and mobile radiological measurements (MRMU) at the basement structure compared roughly within a factor of 2. This was good, considering the limitations of the two sets of data and other factors affecting the differences. Comparisons between protection factors from fallout data and MRMU data at the underground group shelter were excellent. MRMU data and theoretical calculations also compared satisfactorily. (auth).
Author: R. L. French
Publisher:
Published: 1971
Total Pages: 32
ISBN-13:
DOWNLOAD EBOOK →The experiment provided confirmation, both qualitative and quantitative, of the "first-last collision model" of the air-ground interface effect.
Author: Charles Martin Huddleston
Publisher:
Published: 1964
Total Pages: 78
ISBN-13:
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