Record Details

The design and construction of an ionization chamber to measure background radiation

ScholarsArchive at Oregon State University

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Title The design and construction of an ionization chamber to measure background radiation
Names Weaver, Kenneth Earl (creator)
Kelley, John P. (advisor)
Date Issued 1968-08-19 (iso8601)
Note Graduation date: 1969
Abstract An ionization chamber was constructed, using a fiberglass wall
sphere, for the purpose of measuring background radiation. The
system consists of the fiberglass wall chamber, 38.85 liters in
volume, air filled, not sealed, used in conjunction with a precision
capacitor, nulling voltage supply and electrometer. It was calibrated
against a Shonka, 16.5 liter, muscle-equivalent, sealed ionization
chamber in conjunction with a Shonka electrometer.
Measurements made over a period extending from July 22 to
July 29, 1968 in a second floor laboratory (X-ray Science and Engineering
Laboratory, Oregon State University) with the fiberglass
chamber yielded a mean dose rate of 7.96 ± 0.21 μ rads/hr. Measurements
made over the same period with the Shonka system yielded
a mean dose rate of 7.73 ± 0.07 μ rads/hr.
The Shonka system was also used to measure background
radiation as a function of time from December 14, 1967 to June 10,
1968. The mean value obtained over this period was 7.73 ± 0.10 μ
rads/hr.
Genre Thesis/Dissertation
Topic Radiation -- Measurement
Identifier http://hdl.handle.net/1957/46484

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