
7.6 More Objects to Be Inspected andInspection Requirements
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In order to quantize the carbon content some kind of calibration is needed.
Measurements lasted 9min with the neutron beam intensity of 4.3 × 107 n/s.
Block with the 10% bwoc of the added salt was also measured, but the chlo-
rine lines were not detected.
Scanning of the concrete block with the iron bar was done by the rotation of
the neutron generator in order to determine the bar diameter and the depth of the
concrete cover. For each angle of rotation, the 9min. gamma ray spectrum was
collected. Spectra were tted with the assumption that it does not contain impu-
rities and just ...