A graphic; and a calculation

[JMUCKERHEIDE@delphi.com]

Group,

Does anyone have or know where to find a good:

1.  Graphic/figure(s):

For the natural distribution of radioactivity and/or radiation?

To present the natural background rad inventory of the earth as a
distribution, on a probability distribution graph form or not. (log-normal?) 

(Also population-weighted?) (with and without oceans?)

Can Bernie Cohen's indoor radon data by county reasonably indicate/correlate
with background concentration distribution? (How much do thorium, potassium
and rubidium vary vs uranium to make this invalid?) Does radium/radon in
groundwater correlate with background concentrations?  with the indoor data? 

2.  Calculation(s):  "equivalent radioactivity"

That compare radioactivity sources: Ci/Bq, adjusted by decay energy, and/or by 
time 

1. integrate over time; ie, normalize referring to source of "Ci" or "Bq" for
short and long-lived nuclides (eg, N-16, vs I-131, vs Cs-137), integrate over
50 years (or alternate) - include radioactive decay products 

2. by decay energy; ie, normalize for total decay energy (eg, tritium, vs
Co-60, etc) 

Thanks.

Regards, Jim Muckerheide
jmuckerheide@delphi.com