Continuing the discussion from Discrepancy with Cs-137 radioisotope source:
Please provide the used software versions.
FLUKA:4-5.1
Flair:3.3-0.3
Cs_issue_17_tab.lis (45.1 KB)
Cs_issue.flair (898 Bytes)
Cs_issue.inp (1.1 KB)
I have scored the energy spectrum in a region (target filled with Be) for Cs-137 decay. Due to some reason it extends beyond the Q-value. Kindly explain.
Hi @akardeepak
Could you please include in your.flair file the scoring that you are using to produce the plot?
Cheers,
Jerzy
i have already included it.
For convenience I am again including it (unit of X-scale is 1/keV). The similar behaviour was observed with flair 3.4-3 also.
Cs_issue.flair (1.8 KB)
Okay, so there are two things:
You give a kinetic energy of 3 MeV to your primary Cs137 beam.
I think that what you see with theDETECTcard can actually be betas + gammas, everything that is deposited within one primary history.
However, I tried to change the primary energy to 0 and look at the DETECT scoring again and the tail is still there, so at the moment I am not sure why would it reach up to 3 MeV and potentially more, to be investigated.
When using a USRTRK with a DCYSCOREassigned in semi-analoge mode, the spectra look like this.
Cheers,
Jerzy
The primary energy is in fact ignored when ISOTOPEis requested, sorry for the confusion! Yet I still have to find out what is happening there with the DETECTcard.
I cannot understand the peaks around 500-600 for electrons using USRTRK with DCYSCORE. I have simulated for 662 keV photons in identical condition. The electron spectra are attached for it (they don’t have these peaks). I have attached the flair and lis files also.
Meanwhile is there an alternative way to generate energy spectra as DETECT output doesn’t seem to be satisfactory?
Cs_issue.flair (2.7 KB)
662_21_tab.lis (61.1 KB)
662_22_tab.lis (61.1 KB)
662_23_tab.lis (61.1 KB)
662_24_tab.lis (61.1 KB)
Hi @akardeepak
Sorry for the late reply! I will have a look again at your question next week.
Best,
Jerzy
