Gamma-Scout ALERT, Руководство пользователя

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R
Alpha, Beta, Gamma Radiation
Your GAMMA-SCOUT
®
is equipped with a Geiger-Müller counter tube enabling you to detect not
only gamma radiation, but alpha and beta radiation as well.
Choose to Exclude Alpha and Beta Radiation
You can use the radiation selection switch to limit the types of radiation you want to measure:
• Set the selection to center position (
y
symbol) if you want to detect gamma radiation only.
With the switch in this position, an aluminum shield screens the counter tube window against alpha
and beta radiation.
• Turn the switch to the left (
ß
+
y
symbols), if you want to measure gamma and beta radiation, but
no alpha radiation. Now an aluminum foil screens the counter tube window against alpha radiation.
• Turn the switch to the right (
a
+
ß
+
y
symbols), if you want to measure all three radiation types.
The counter tube window is now open and can be accessed by all three radiation types.
For normal measuring, place the radiation selection switch at center position. Alpha and beta radia-
tion are limited in range to a few centimeters or meters, so can only be detected when very close to
the radiation source.
This also explains why it makes little sense to keep the radiation selection switch constantly open –
an added reason being that the counter tube window may be damaged in this exposed position, for
example, when poked by a sharp object (such as a pen).
5
ß
+
y
y
a
+
ß
+
y