[ RadSafe ] Buildup factor for compounds

[John Jacobus]

Kai,
I too have had trouble understanding how MicroShield
does its calculations.  Of course, I have not gotten
any feedback from the current distributor.  

Go to the "Help" tab at the top, click on "contents"
and scroll down to the subject "Creating a Custom
Matieral" and review that material all all of those
that follow.  They do discuss the what goes into the
calculation of a custom material and read the sections
under it.  

I think variation occur based on the parameters used. 
For example, changing the mean free path (MFP) will
alter the results.  



--- Kai Kaletsch <eic at shaw.ca> wrote:

> Hi John,
> 
> My question actually came about by looking at the
> peculiar results you get 
> when using MicroShield. For example MicroShield's
> calculated value for the 
> buildup factor of lead glass (treated as a compound
> of lead, oxygen...) is 
> quite different from the stored values for lead
> glass. I could not find what 
> their calculation is actually doing.
> 
> So, I am interested in: what is MicroShield doing
> when it calculates buildup 
> factors for compounds and is there an accepted
> method for doing that.
> 
> ----- Original Message ----- 
> From: "John Jacobus" <crispy_bird at yahoo.com>
> To: <radsafe at radlab.nl>
> Sent: Wednesday, August 30, 2006 2:21 PM
> Subject: Re:[ RadSafe ] Buildup factor for compounds
> 
> 
> > Kai,
> > Have you tried using the computer code
> MicroShield?
> > It allows for the imput of custom material and
> will
> > provide calcultions that include buildup.
> >
> >
> >> Subject:    [ RadSafe ] Buildup factor for
> compounds
> >> Author:     radsafe-bounces at radlab.nl
> >> Date:       8/23/2006 11:39 PM
> >>
> >>
> >>
> >>
> >>        Hello Radsafers:
> >>
> >>        Is there an established or preferred
> method
> >> for estimation the
> >>        dose buildup factor for compounds or
> mixtures
> >> of shielding
> >>        materials?  I am trying to come up with
> >> reasonable values for
> >>        things such as barite loaded concrete or
> iron
> >> loaded concrete.
> >>
> >>        Thanks in advance
> >>
> >>        Kai Kaletsch
> >>        Environmental Instruments Canada Inc.
> >>        http://www.eic.nu/
> >
> >
> > +++++++++++++++++++
> > May we never confuse honest dissent with disloyal
> subversion.
> > Dwight D. Eisenhower
> >
> > -- John
> > John Jacobus, MS
> > Certified Health Physicist
> > e-mail:  crispy_bird at yahoo.com
> >
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> 


+++++++++++++++++++
May we never confuse honest dissent with disloyal subversion. 
Dwight D. Eisenhower  

-- John
John Jacobus, MS
Certified Health Physicist
e-mail:  crispy_bird at yahoo.com

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