[ RadSafe ] Na 22 PET question

[John Jacobus]

Gary,
You set your discriminator to the 0.511 Mev energy
annihilation photons.  See page 66 at
http://www.inl.gov/gammaray/catalogs/pdf/naicat.pdf.


--- Gary Isenhower <garyi at trinityphysics.com> wrote:

> How can Na 22 be used to find efficiency for wipe
> counters at PET 
> facilities, if the Na 22 has that extra 1.2 Mev
> photon  with every 
> decay?  Doesn't that mess up the efficiency or do
> the counters correct 
> for that somehow?
> 
> Thanks for any help,
> Gary Isenhower, M.S.
> 713.690.3020
> 
> 
> 
> _______________________________________________
> 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/
> 


+++++++++++++++++++
"A scientist's aim in a discussion with his colleagues is not to persuade, but to clarify." 
Leo Szilard
-- John
John Jacobus, MS
Certified Health Physicist
e-mail:  crispy_bird at yahoo.com

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com