[ RadSafe ] Rad Toolbox [[was Radon pCi/l to mRem/hr]]

[John R Johnson]

Jaro

I think the one from BNL is the best, but I've lost its address.

Question; Why do you want information on Y-90m for Sr-90  decay? Sr-90 
decays directly to the ground state of Y-90 with an Emax beta of 0.546 Mev. 
Y-90 decays (0.02%, Emax = 0.52 MeV) to  an excited state (1.75 MeV) of 
Zr-90. The main decay is to the ground state of Zr-90. You are correct when 
you say the  main photons are the bremsstralung from these betas.

John
***************
John R Johnson, PhD
CEO, IDIAS, Inc.
Vancouver, B. C.
Canada
(604) 222-9840
idias at interchange.ubc.ca

----- Original Message ----- 
From: "Jaro" <jaro-10kbq at sympatico.ca>
To: "RADSAFE" <radsafe at radlab.nl>
Sent: Sunday, April 08, 2007 8:08 AM
Subject: RE: [ RadSafe ] Rad Toolbox [[was Radon pCi/l to mRem/hr]]


>I installed Rad Toolbox software on my PC, thinking it will be a handy tool
> to have.
>
> But I was a bit disappointed, when I tested it to see how it displays data
> on Sr-90 decay.
> Like many other reference sources, it omits the Y-90m isomer, which is
> normally the intermediate decay product, prior to Y-90.
> If it wasn't important, I guess I wouldn't mind very much.
> But in this case, if users are unaware of the intermediate decay product,
> they are led to believe that Sr-90 is a radioisotope energy source without
> any gamma emissions (thus very desirable, as bremsstrahlung X-rays are
> easier to shield than gammas).
>
> I wonder how many other such omissions are present in Rad Toolbox & 
> similar
> software ?
>
> Is anyone aware of any software that is more accurate ? (Thnx)
>
> Jaro
> ^^^^^^^^^^^^^^^^^^^^^
>
>
>
> -----Original Message-----
> From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On 
> Behalf
> Of Min Sook Kim
> Sent: Friday, April 06, 2007 8:28 AM
> To: cobdw at tds.net
> Cc: radsafe at radlab.nl; radsafe-bounces at radlab.nl
> Subject: Re: [ RadSafe ] Radon pCi/l to mRem/hr
>
>
>
>
> There is a perfect program for this task. The software name is Rad 
> Toolbox.
> It can be downloaded from http://ordose.ornl.gov/downloads.html. Click the
> "Decay Data" box from the menu when running the program. Hope this helps.
>
> Min-Sook Kim, Ph.D.
> Bureau of  Water Supply Protection
> New York State Department of Health
> E-Mail : msk02 at health.state.ny.us
> TEL: (518) 402-7650
>
>
>
>             <cobdw at tds.net>
>             Sent by:
>             radsafe-bounces at r                                          To
>             adlab.nl                  radsafe at radlab.nl
>                                                                        cc
>
>             04/06/2007 07:07                                      Subject
>             AM                        [ RadSafe ] Radon pCi/l to mRem/hr
>
>
>
>
>
>
>
>
>
>
> Need a little help.
> I recently tested my home for radon gas using a commercially available
> passive alpha-track detector. Results were reported in picocuries per
> liter. I would like to convert this to millirem per year. Can some one
> point me in the right direction to find the formula for this?
>
> Thanks
> Doug
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
>
> Before posting a message to RadSafe be sure to have read and understood 
> the
> RadSafe rules. These can be found at:
> http://radlab.nl/radsafe/radsaferules.html
>
> For information on how to subscribe or unsubscribe and other settings
> visit: http://radlab.nl/radsafe/
>
>
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
>
> Before posting a message to RadSafe be sure to have read and understood 
> the
> RadSafe rules. These can be found at:
> http://radlab.nl/radsafe/radsaferules.html
>
> For information on how to subscribe or unsubscribe and other settings 
> visit:
> http://radlab.nl/radsafe/
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.446 / Virus Database: 268.18.26/748 - Release Date: 4/5/2007
> 3:33 PM
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.446 / Virus Database: 268.18.26/751 - Release Date: 4/7/2007
> 10:57 PM
>
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
>
> Before posting a message to RadSafe be sure to have read and understood 
> the RadSafe rules. These can be found at: 
> http://radlab.nl/radsafe/radsaferules.html
>
> For information on how to subscribe or unsubscribe and other settings 
> visit: http://radlab.nl/radsafe/