-- _______________________________________________ Jean-Emmanuel Groetz Laboratoire Chrono-Environnement UMR CNRS 6249 Université de Franche-Comté 16 route de Gray 25030 Besançon Cedex France mailto : jegroetz_at_univ-fcomte.fr tel : +33 (0) 3 81 66 65 07 fax : +33 (0) 3 81 66 65 22 http://chrono-environnement.univ-fcomte.fr/spip.php?article1537 _______________________________________________ Le mardi 03 mars 2020 à 17:29 +0000, Bartkoski,Dirk Alan a écrit : > Thank you for the recommendation. Are you familiar how Geant4 > compares to FLUKA in this regard? > > -----Original Message----- > From: Jean-Emmanuel Groetz [mailto:jegroetz_at_univ-fcomte.fr] > Sent: Monday, February 10, 2020 2:50 AM > To: Bartkoski,Dirk Alan <DABartkoski_at_mdanderson.org> > Subject: [EXT] Re: [fluka-discuss]: Tungsten Characteristic X-Ray > Discrepancy and Underestimation > > WARNING: This email originated from outside of MD Anderson. Please > validate the sender's email address before clicking on links or > attachments as they may not be safe. > > Personal message > > Dirk, > > In my opinion, if you want to use a generalist code, you should use > Penelope 2014 (2018 version should be available soon), which has a > very good treatment of relaxation processes and also electron impact > ionization. This is the most accurate code for X-ray fluorescence (K > and L lines) compared to FLUKA or MCNP. > > Hope this helps. > Jean-Emmanuel > -- > _______________________________________________ > Jean-Emmanuel Groetz > Laboratoire Chrono-Environnement UMR CNRS 6249 Université de Franche- > Comté > 16 route de Gray > 25030 Besançon Cedex > France > > mailto : jegroetz_at_univ-fcomte.fr > tel : +33 (0) 3 81 66 65 07 > fax : +33 (0) 3 81 66 65 22 > http://chrono-environnement.univ-fcomte.fr/spip.php?article1537 > _______________________________________________ > > > > > Le vendredi 07 février 2020 à 19:51 +0000, Bartkoski,Dirk Alan a > écrit : > > I have a simple 120 keV electron beam incident on a 50 um thick > > tungsten target of which I am measuring the energy spectrum of the > > forward scattering photons with an energy resolution of 0.1 keV. I > > expect to see a typical partial-transmission target spectrum with > > characteristic x-rays for Ka2 of 57.982 keV (NIST) in the 57.9- > > 58.0 > > keV bin and Ka1 of 59.319 keV (NIST) in the 59.3-59.4 keV bin. > > However, I have peaks in the 58.1-58.2 keV bin and the 59.4-59.5 > > keV > > bin. > > > > Is this discrepancy to be expected? > > > > Secondly, upon researching the answer, I came across a few threads > > dating back to 2012 to as recent as 2019: > > > > http://www.fluka.org/web_archive/earchive/new-fluka-discuss/5107.html > > http://www.fluka.org/web_archive/earchive/new-fluka-discuss/8498.html > > > > http://pcfluka.mi.infn.it/web_archive/earchive/new-fluka-discuss/13977.html > > > > that indicate that FLUKA does not include characteristic x-rays > > from > > direct electron impact ionization events and thereby > > underestimates > > characteristic x-ray production. I saw nothing about this in the > > FLUKA2020 release notes. Is there a plan to add this additional > > characteristic x-ray contribution in the near future > > > > ___________________________________________________________________ > > __ > > __________ > > Dirk A. Bartkoski, Ph.D. > > Research Scientist | Division of Radiation Oncology > > > > T. Boone Pickens Tower (FCT8.5007) > > 1515 Holcombe Blvd. > > Unit 1420 > > Houston, TX 77030 > > (713)794-5026 > > > > The information contained in this e-mail message may be > > privileged, > > confidential, and/or protected from disclosure. This e-mail > > message > > may contain protected health information (PHI); dissemination of > > PHI > > should comply with applicable federal and state laws. If you are > > not > > the intended recipient, or an authorized representative of the > > intended recipient, any further review, disclosure, use, > > dissemination, distribution, or copying of this message or any > > attachment (or the information contained therein) is strictly > > prohibited. If you think that you have received this e-mail message > > in > > error, please notify the sender by return e-mail and delete all > > references to it and its contents from your systems. > > > The information contained in this e-mail message may be privileged, > confidential, and/or protected from disclosure. This e-mail message > may contain protected health information (PHI); dissemination of PHI > should comply with applicable federal and state laws. If you are not > the intended recipient, or an authorized representative of the > intended recipient, any further review, disclosure, use, > dissemination, distribution, or copying of this message or any > attachment (or the information contained therein) is strictly > prohibited. If you think that you have received this e-mail message > in error, please notify the sender by return e-mail and delete all > references to it and its contents from your systems. __________________________________________________________________________ You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_infoReceived on Wed Mar 04 2020 - 14:28:24 CET
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