Dear list members, can you please tell me, what the ion chamber utility calculates. I did not understand the perl code. Does it give me first the percentage absorbed via Beers law und then give me the Nbofphotonsabsorbed, that means the flux absorbed in the chamber or is the result that gives the program out the "number of transmitted photons" after the chamber? Thank you Irmi -- ********************************************* I. Reitz German Cancer Research Center DKFZ, E0401 Dept. of Medical Physics in Radiation Therapy Im Neuenheimer Feld 280 D – 69120 Heidelberg Phone: +49 - 6221 42-2455 Fax: +49 - 6221 42-2572 Email: I.Reitz@dkfz.de *********************************************
can you please tell me, what the ion chamber utility calculates. I did not understand the perl code.
Does it give me first the percentage absorbed via Beers law und then give me the Nbofphotonsabsorbed, that means the flux absorbed in the chamber
or is the result that gives the program out the "number of transmitted photons" after the chamber?
It reports % absorbed and number of photons/second transmitted after the chamber. --Matt
Hi Irmi: The calculation gives the fraction of the incident photons (in percentage) which are _absorbed_ in the ionization chamber. The length of the chamber, the gas mixture and the incident energy are the parameters you have to put in to the calculation. HTH Carlo On Tue, 17 Apr 2007, I.Reitz wrote:
Dear list members,
can you please tell me, what the ion chamber utility calculates. I did not understand the perl code.
Does it give me first the percentage absorbed via Beers law und then give me the Nbofphotonsabsorbed, that means the flux absorbed in the chamber
or is the result that gives the program out the "number of transmitted photons" after the chamber?
Thank you Irmi
-- Carlo U. Segre -- Professor of Physics Associate Dean for Special Projects, Graduate College Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@iit.edu http://www.iit.edu/~segre segre@debian.org
participants (3)
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Carlo Segre -
I.Reitz -
Matt Newville