ECOTEST DKG-21 M Operating Manual page 103

Personal gamma radiation dosimeter
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H 
Calculate the average DER value (
by the
(
10
)
p
formula (5.1). Calculate the DER value without gamma
background DER of the УПГД-3Б by the formula
(5.2)
H
(
10
)
H
(
10
)
H
(
10
)
p
p
Note. The distance between the mechanical center of
the source and the mechanical center of the dosimeter's
detector is considered to be the distance between the
mechanical center of the source and the plane, which is
perpendicular to the direction of gamma-quanta beam
102

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