Gamma Ray Spectra and Shielding Survey of the University of Maryland Reactor
Gamma Ray Spectra and Shielding Survey of the University of Maryland Reactor
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Date
1963
Authors
Nhiep, Nguyen
Advisor
Duffey, Dick
Citation
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Abstract
The gamma ray spectra of the University of Maryland
reactor were measured at the beam tube which extends from the
side of the reactor to the core, the thermal column and the
top of the reactor. There were three gamma ray spectra
measurements at the beam tube : gamma ray spectra recorded
by a single-channel spectrometer when the reactor was shut
down and when the reactor was operated at different power
levels and the gamma ray spectra recorded by a 256-channel
spectrometer when the reactor was at different levels of
power. However, only the single channel spectrometer was
used to measure gamma ray spectra at the thermal column and
the top of the reactor; some gamma ray spectra were recorded
at the thermal column when the reactor was operated at
various power levels and a gamma ray spectrum was recorded
at the top of the reactor when the reactor was operated at
full licensed power of 10 kw.
The gamma ray shielding survey of the reactor was
done by a Geiger-Muller survey meter when the reactor was
running at full power of 10 kw. The highest level found was about 0.8 millirem per hour which was at the side of the
reactor at core level. A calculated gamma ray level was
near this value.