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ARRT Level 1 Module 4 JKO
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ARRT Level 1 Module 4 JKO
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ARRT Level 1 Module 4 JKOIon chambers are preferred when what is needed? - ANS-Exposure Rates
Name the type of gas counter that can measure source activities and differentiate
between particle radiation and photons based on pulse height. - ANS-Proportional
Counter
Select all of the following that are true concerning G-M counters. - ANS-All EXCEPT
detects and pulse
What application of G-M counters involves estimating the neutron dose from the
activation of Sodium-23 (Na-23)cto Na-24 in the blood? - ANS-Accident Dosimetry
What gas filled instrumentation would give you the capability to distinguish alpha
emitters from other types of contaminates? - ANS-Proportional
Which gas filled counter is best for assaying alpha and beta sources? -
ANS-Proportional
Which of the following describes a gas filled detector's anode? - ANS-Positively charged
wire in the center of the room
Which region allows ion pairs to attract to each other before being drawn to, and
detected by, the anode and cathode? - ANS-Recombination Region
You have just finished a survey in a possibly contaminated area. You must now leave
the area for a briefing. Before entering the clean area you must be checked to ensure
that you do not spread any contamination. What common field instrument is the
standard choice for frisking personnel for contamination? - ANS-Geiger-Mueller
You must search a building that is suspected to have numerous unknown sources
inside. Your commander tells you that you must establish a boundary that will keep
non-responders from exceeding a dose rate of 2 mR/hr. What gas filled instrument
would be able to help you determine where the 2 mR/hr limit is? - ANS-Ion Chamber
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