Re: Photon spectra in the workplace & Charlie Willis

["Tosh Ushino" <tushino@icnpharm.com>]

Dr. Charles,

NUREG/CR-3560 (PNL-4915), " Spectral and Dosimetric Measurements and Photon
Fields at Commercial Nuclear Sites," August 1984, probably contains what
you are looking for. The study was conducted at Pacific Northwest
Laboratory by P.L. Roberson, G.W.R. Endres, R.A. Fox, D.L. Haggard, K.L.
Holbrook, and L.A. Rathbun.

Photon spectrum varies quite a bit depending on where you are in the plant.
I hope this helps.

I also want to add to postings about Charlie Willis. I had an unique
pleasure of working with Charlie when I was still fairly fresh out of
school. I was literally a novice at the feet of the master. I still
remember vividly his level headedness and dry sense of humor.

Tosh Ushino
ICN Dosimetry






"Monty Charles" <charlemw@novell1.bham.ac.uk> on 02/04/99 11:11:57 AM

Please respond to radsafe@romulus.ehs.uiuc.edu

To:   Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
cc:    (bcc: Tosh Ushino/HQ/ICN)
Subject:  Photon spectra in the workplace




Dear Colleagues

I am trying to obtain data on the photon spectra (fluence vs
energy) in the workplace (nuclear power plant, reprocessing plant,
hospitals etc).  Can anyone help?

Why am I interested in this?  Most of the photon dose delivered to
the Japanese bomb survivors was between 2-5 MeV.  In most
occupational exposures the energy will be much less than this.  This
leaves open the possibility that the radiation risk estimates from
Japan may not be totally appropriate for routine exposures.  In an
attempt to evaluate the magnitude of this effect I need some photon
spectra.

Many thanks

Monty Charles
Dr Monty Charles, Reader in Radiation Physics
School of Physics & Space Research
University of Birmingham
Edgbaston
Birmingham B15 2TT
England
TEL +44  0121 414 3483
FAX +44  0121 414 4725
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