A fast and simple approach for the estimation of a radiological source from localised measurements after the explosion of a radiological dispersal device.
After an explosion of a radiological dispersal device, decision-makers need to implement countermeasures as soon as possible to minimise the radiation-induced risks to the population. In this work, the authors present a tool, which can help providing information about the approximate size of source term and radioactive contamination based on a Gaussian Plume model with the use of available measurements for liquid or aerosolised radioactivity. For two-field tests, the source term and spatial distribution of deposited radioactivity are estimated. A sensitivity analysis of the dependence on deposition velocity is carried out. In case of weak winds, a diffusive process along the wind direction is retained in the model.
Institut für Strahlenschutz (ISS) - Helmholtz Zentrum München HMGU, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany.
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L
Urso
J C
JC
Kaiser
C
C
Woda
J
J
Helebrant
J
J
Hulka
P
P
Kuca
Z
Z
Prouza
D000465:Algorithms; D005107:Explosions; D016018:Least-Squares Analysis; D015233:Models, Statistical; D008962:Models, Theoretical; D016011:Normal Distribution; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011835:Radiation Protection / Q000379:methods*; D018788:Radioactive Hazard Release; D011851:Radioactivity; D012306:Risk; D023481:Terrorism; D014919:Wind