|Message: Re: Strange results of 10B(n,2a+t) reaction||Not Logged In (login)|
Click on the Forum title, e.g. on the "Forums by Category" page, to read a sequence of postings to the Forum and its threads all in one page. If you are only interested in one thread or the thread following a specific posting, click the thread or the posting, which takes you to a smaller page, which contains only the part you are interested in and may be easier to navigate.
Messages are "chained" if there are only replies at the first level, i.e. 1/1.html, 1/1/1.html etc. In case of "chained" messages the message number is replaced by the icon and there is no indentation.
Inline: Display the subject line only or also the text of the posting(s); for the choice "All" the "Outline" choices are switched off.
|1||0||1||no text / full text of posting|
|2||1||All||text for level 1 only / text for All postings|
Outline: Choose the depth of the posting thread, successive toggle controls provide increasing detail.
|1||2||1||2 levels / 1 level (original posting)|
|2||3||2||3 levels / 2 levels|
|3||3||All||3 levels / all levels (all postings)|
On Wed, 06 Mar 2019 21:34:41 GMT, Dongwon Lee wrote:
> I've been simulating fast neutron (1 to 10MeV) interactions on a thin > 10-Boron nitride, and I ran into strange results of 10B(n,2a+t) > reaction. When this reaction happens, total deposited energy of 2 alphas > and a triton is way over what I expect. I looked up its Q-value on NNDC > website and it is only 0.32MeV. Has anyone noticed the same issue with > mine? I use version 4.10.3 with G4NDL 4.5. My physics list is > QGSP_BERT_HP. >
Here, an output of example Hadr03 to enforce your question.
What is the difference between reactions 1 and 2 ? why their Q is so different ? This does not happen in the other reactions (Li7 or Be10) . Futhermore, it does not happen at all if we do not use _HP physics constructors.
May I suggest you to open a bug report.
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2019/03/11/11.25-9392-neutron.mac.txt http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2019/03/11/11.25-91979-neutron.out.txt