ORTEC RADEAGLET, User Manual

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Figure 9: The DOSE RATE MODE: Ambient H*(10) dose rate is displayed in units µSv/h or mR/h.
2.6 Finding Radioactive Sources With Detect Mode
2.6.1 Background
Finding radioactive sources requires a solid differentiation between the ambient
Þ
Background dose rate
(or count rate) and the dose rate of a potential source. For this purpose, the RADEAGLET measures the
background as shown in Figure
10 , p. 18 .
You can manually trigger the re-acquisition of a new background level with the right button labelled NEW
BG . This might become necessary if you changed your measurement location or the background is sus-
pected to have changed for any reason.
It is preferable to take the background in a low radiation environment. If you are in a facility with a
high natural background or with multiple radiation sources present, the detection capability adapts
to this situation.
2.6.2 Finding Gamma Sources
The RADEAGLET detects gamma sources by evaluating the incoming radiation strength in terms of count
rate. When entering the
DETECT MODE , the instrument will automatically perform a background acquisi-
tion. It is best to do this in an area representative of the natural background and to make sure no known
radiation sources are located nearby.
Having established the background, a bar graph appears as presented in Figure 11 , p. 19 . The bars move
from the right to the left side of the screen. On the right side, the most recent bar appears. The height
© innoRIID GmbH RADEAGLET User Manual• Software 2.1.16 • Document 1.32o • 2017-12-15 Page 17 of 60