RE: In-111

["Moroney, Roger W" <WRMoroe@mkg.com>]

We have recently calculated skin doses for several nuclides of interest
here. We are using the Varskin program to perform these calculations after
adding our site specific nuclides. For In-111, 1 uCi point source, the beta
dose rate is 233 mrad/h, the gamma dose rate is 84 mrad/h. For a two
dimensional source of 1 cm^2, all other parameters same as above, the beta
dose rate is 245 mrad/h. All dose rates are averaged over a 1 cm^2 area.

For In-111, the shallow dose is due to conversion electrons as there are no
betas. Varskin allegedly overcalculates the dose from conversion electrons
but I do not have a value for this.
********************************************************
********************************************************
Roger Moroney
Technical Director - External Dosimetry Program
Health Physicist
Mallinckrodt
wrmoroe@mkg.com
314.654.7457 voice
314.654.7571 fax

> ----------
> From: 	Jim Abraham[SMTP:jimabe@lamar.colostate.edu]
> Reply To: 	radsafe@romulus.ehs.uiuc.edu
> Sent: 	Friday, July 10, 1998 11:25 AM
> To: 	Multiple recipients of list
> Subject: 	In-111
> 
> Dear Radsafers:
> 
> I'm looking for information on In-111.  Gamma Ray Constant and Skin Dose
> Conversion Factor if there is one.  So far, I've had trouble locating
> this info.  Could someone help me out.  Thanks in advance
> 
> --
> <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
> James P. Abraham
> Alt. Radiation Safety Officer
> Radiation Control Office - Colorado State University
> 133 General Services Building - Fort Collins, Colorado 80523-6021
> 
> Phone:  (970) 491-3928    Fax:  (970) 491-4804
> Email:   jimabe@lamar.colostate.edu
> <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
> 
>