[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: FW: Tissue Equivalent Proportional Counters
When you say "n and gamma rates", do you mean dose rates?
The opinions expressed are strictly mine.
It's not about dose, it's about trust.
Curies forever.
Bill Lipton
liptonw@dteenergy.com
"Doty, Patrick" wrote:
> An organic scintillation detector with pulse-shape discrimination can
> determine n and gamma rates independently. Is there a commercial system
> based on this approach?
>
> F. P. Doty, Ph. D.
> Member of Technical Staff
> Sandia National Labs
> 7011 East Avenue
> Livermore, CA
>
> -----Original Message-----
> From: William V Lipton [mailto:liptonw@DTEENERGY.COM]
> Sent: Wednesday, April 30, 2003 8:54 AM
> To: MCCONNELL, MICHAEL E
> Cc: 'radsafe@list.vanderbilt.edu'
> Subject: Re: FW: Tissue Equivalent Proportional Counters
>
> Tissue equivalent proportional counters are sensitive to any ionizing
> radiation that can reach the active region of the detector. Thus, you will
> have trouble performing neutron surveys in a mixed gamma - neutron radiation
> field.
>
> I remember, from my accelerator hp days, that the Zero Gradient Synchrotron,
> at Argonne National Laboratory used them. This facility had a stable
> gamma/neutron ratio and the hp's had performed detailed studies to determine
> the effective quality factor. Thus, they could determine the mrems/hour for
> both neutrons and gamma with one survey instrument. If you can't establish
> an
> effective Q, however, tissue equivalent counters are probably not useful.
>
> The opinions expressed are strictly mine.
> It's not about dose, it's about trust.
> Curies forever.
>
> Bill Lipton
> liptonw@dteeenergy.com
>
> "MCCONNELL, MICHAEL E" wrote:
>
> > > -----Original Message-----
> > > From: MCCONNELL, MICHAEL E
> > > Sent: Monday, April 28, 2003 3:36 PM
> > > To: 'radsafe@list.vanderbilt.edu'
> > > Subject: FW: Tissue Equivalent Proportional Counters
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: MCCONNELL, MICHAEL E
> > > Sent: Monday, April 28, 2003 3:31 PM
> > > To: 'radsafe@list.vanderbilt.edu'
> > > Subject: Tissue Equivalent Proportional Counters
> > >
> > >
> > > Question: What are the pros and cons of using a "Tissue Equivalent
> > > Proportional Counter" (i.e. the REM-500 by FarWest Technologies) for
> > > measuring neutron expsoure rate, versus the Boron Tri-flouride (BF3)
> > > detector used with the PNR-4? I'm trying to clarify the difference for a
> > > class I'm presenting on the PNR-4. All responses will be appreciated.
> > > Thank you.
> > >
> > >
> > ************************************************************************
> > You are currently subscribed to the Radsafe mailing list. To unsubscribe,
> > send an e-mail to Majordomo@list.vanderbilt.edu Put the text "unsubscribe
> > radsafe" (no quote marks) in the body of the e-mail, with no subject line.
> > You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/
>
> ************************************************************************
> You are currently subscribed to the Radsafe mailing list. To unsubscribe,
> send an e-mail to Majordomo@list.vanderbilt.edu Put the text "unsubscribe
> radsafe" (no quote marks) in the body of the e-mail, with no subject line.
> You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/
>
> ************************************************************************
> You are currently subscribed to the Radsafe mailing list. To unsubscribe,
> send an e-mail to Majordomo@list.vanderbilt.edu Put the text "unsubscribe
> radsafe" (no quote marks) in the body of the e-mail, with no subject line.
> You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/
************************************************************************
You are currently subscribed to the Radsafe mailing list. To unsubscribe,
send an e-mail to Majordomo@list.vanderbilt.edu Put the text "unsubscribe
radsafe" (no quote marks) in the body of the e-mail, with no subject line.
You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/