|Message: Inelastic gamma emission from carbon||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)|
I'm looking at n,n'g on carbon (14.1 MeV neutrons) and the production intensity of the 4.4 MeV line is correct when material is 100 % carbon; however when the material is a mixture the intensity does not scale by the number density of carbon in the mixture i.e.
G4Material* PlasticMat = new G4Material("PlasticMat",1.00*g/cm3, 2); PlasticMat->AddElement(Hydrogen, 1); PlasticMat->AddElement(Carbon, 1);
This material should produce 50 % gamma emission compared to:
G4Material* carbon = new G4Material("carbon",1.00*g/cm3, 1); PlasticMat->AddElement(Carbon, 1);
I'm using the QGSP_BERT_HP physics package for this...
Also, the n,n'g reaction produces lines above 4.4 (7, 9 and 11.5 MeV) all of which are incorrect; these levels should decay via alpha/other emission, not gamma emission. I can easily remove these by setting the volume sensitive and killing them, but I'd prefer not to have to!).
Any help would be great.
|Inline Depth:||Outline Depth:||Add message:|