Date: Fri, 7 Feb 2020 19:51:07 +0000
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
[mdacc-logo2]
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.
__________________________________________________________________________
You can manage unsubscription from this mailing list at https://www.fluka.org/fluka.php?id=acc_info
(image/jpeg attachment: image001.jpg)