|Message: Re: Apparent undocumented change to Th231 (z90.a231) in PhotonEvaporation||Not Logged In (login)|
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Dear Guangyong Koh,
As mentioned by Dennis the problem occurs when changing format. But it has been already corrected in the PhotonEvaporation 4.3/gamma_correlated data that is now used by default in radioactive decay. There was a need to restore the old PhotonEvaporation 3.2 data in the PhotonEvaporation 4.3 for other process using photon_evaporation. This duplication of the data will be removed probably with the next patch. But again for radioactive decay the correct data PhotonEvaporation 4.3/gamma_correlated should be used in Geant4.10.3. Please check it an tell me if a problem occur in your output. The Th231 have been corrected in PhotonEvaporation 4.3 according to DDEP data (http://www.nucleide.org/DDEP.htm.) This is the reference I am using now when correcting/updating data. This is already documented in the History file of the database.
On Tue, 13 Dec 2016 02:27:52 GMT, gkoh wrote:
> Hi, > > There seems to be an issue with Th231 (z90.a231) in recent versions of > PhotonEvaporation. Below is my documentation of the problem. > > Feb 2006�Issue first raised here ( > http://hypernews.slac.stanford.edu/HyperNews/geant4/get/hadronprocess/441.html > ). > > Nov 2012�Geant4 9.6 / PhotonEvaporation.2.3 z90.a231 updated. Agrees > with fix proposed above. 2.05309e+02 -> 1.85714e+02 emitting a > 1.9595e+01 on line 6: internal conversion coefficient = 1e4, Gamma > intensity = 0.12. > > Dec 2013�Geant4 10.0 / PhotonEvaporation 3.0 No changes to z90.a231 on > release notes. Library agrees with above. > > Dec 2014�Geant4 10.1 / PhotonEvaporation 3.1 No changes to z90.a231 on > release notes, BUT Gamma intensity for same transition (now line 7) now > 0.00. IC coeff still 1e4. > > Present�Geant4 10.2 / PhotonEvaporation 4.3 Gamma intensity still 0. IC > coeff still 1e4 > > As was the case when the problem was first raised, the current version > of the table does not produce the 57% intensity for the 185.715 keV > gamma from U235 decay. My question is: was the change going from > PhotonEvaporation 3.0 to 3.1 intentional, but undocumented, or was it an > intentional fix? > > Thank you. >