Follow up on dose

["Dale E. Boyce" <dale@radpro.uchicago.edu>]

It appears that some of the diferences in the number for dose
constants comes from what they are calculating.

The mass energy attenuation coefficient calculation is
probably best associated with the term Ambient Dose Equivalent

The Unger and Trubey (RHH) calculation is supposed to be the deep
dose equivalent.

The Current ANSI is the effective dose equivalent.

All three mean slightly different things.  However, I am still
at the trend of the numbers in the retracted ANSI standard.
Is the build up at 1 cm so great at low energies that the
deep dose equivalent can be so much greater than the ambient
dose equivalent? 

In any case, what impact does the wide disparity in effective
dose equivalent (what we want to know) and the deep dose
equivalent (what we supposedly measure with personnel dosimeters)
have on what we do in terms of regulatory compliance?

Dale Boyce
dale@radpro.uchicago.edu