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Universal Decay Calculator

(last updated 28 Feb 2024)
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For optional graphical output, the browser must be HTML 5-capable.
For educational purposes only. No warranty.
The decay and air kerma data is taken from ICRP-07 Data Files © A. Endo and K.F. Eckerman 2008.

Calculate radioactive decay of 1252 nuclides, including ingrowth and decay of their progeny, and show point-source air kerma.

Enter the parameters and click the "Calculate" button below. HELP

Numbers can be entered in exponential notation: 5.1 · 10-6 = 5.1e-6
"t" means metric tonne.

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    Nuclide Input                
Activity Unit
Bq     kBq     MBq     GBq     TBq     mCi     Ci
Series NameNuclide NameInitial Activitypureequil. *indiv. **
* nuclide initially in secular equilibrium with its progeny
** individual specification of initial activity for each nuclide of series

Output Parameters                
TimeChart TypeChart DataChart DetailChart Axes
Chart    
Start:
End:

List    


Mark list time in chart
no chart

line chart
stacked areas
animated bars
activities
air kerma



air kerma
point source
distance [m]

total values of each series
all individual nuclide values
individual nuclide values
      for selected series:
      (multiple selections with CTRL-key)


show total for selection (line chart only)
skip minor nuclides
log. Y axis
      (line chart only)
     Decades on
     log. Y axis:
     

log. time axis/
     time steps

 
        HELP

Results

 

(Click legend items to toggle specific curves on/off)
 
 

(... copy and paste ...)
 

 


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