The standard method for determination of ground level dose rates
from airborne gamma-ray is the integral count rate which for a
constant flying altitude is assumed proportional to the dose rate.
The method gives reasonably results for natural radioactivity
which almost always has the same energy distribution. When manmade
radioactivity is present, this is no longer the case. Another
method based on giving the counts of different channels a
different weighting has been examined. The new method is more
robust against varying energy distribution, and for energies above
200 keV it gives excellent results.

Number of pages | 37 |
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Publication status | Published - 1996 |
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