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External Radiation Dose Calculator
(Virtual Geiger Counter)

(last updated 2 May 2013)
JavaScript must be enabled. For educational purposes only. No warranty.
For optional graphical output, Java must be enabled (uses Java applet wupDraw).
ORNL is the source of the decay data used in this calculator.

Calculate radiation dose from shielded gamma source.

Enter parameters and click the "Calculate" button below. HELP new window
Numbers can be entered in exponential notation: 5 · 10-6 = 5e-6

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Mode     HELP new window
Select here before any other entry!
(Selection resets all other parameters)		 Example data sets
(set Shield layers=1 and appropriate source mode first!)
Number of
Shield layers:

 Point Source Shielding in free air
48Y Cylinder with Heels
DU bullet buried in soil
Volume Source Uranium mill tailings cover
48Y Cylinder with UF6 nat

 

              Cosmic Radiation Parameters             HELP new window
Altitude [m above sea level]
Latitude [°] 		Outdoor
Indoor: Shielding factor

 
        Geometry Parameters             HELP new window
y - Distance of receptor from x-axis [cm]
 - or - b - Distance of receptor from shield rear surface [cm]

 
        Output Parameters             HELP new window
Dose OptionsGraph DetailResult Detail
Terrestrial gamma dose coeff. in air [Sv/Gy]

Use buildup factors for:
 Show integration grid

Show dose color map:
      x Raster width [pixel]
      y Raster width [pixel]
      Logarithmic color scale:
            Decades 		Dose from each layer:

 
Java is not enabled. No graphical output.

Select other receptor locations with mouse click!
 
           HELP new window  
 

Results


(... copy and paste ...)
 


 

> See also:

 

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