|Message: Re: define mixture with gdml||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)|
if you want to create a mixture of materials, the 'fraction' tag calls the
has the signature
void AddMaterial(G4Material* material, //the material G4double fraction); //fractionOfMass
so, the answer is mass fraction.
You can also create a mixture of elements by using the 'composite' tag, and in that case the method that would be called will be:
G4Material::AddElement, with the signature:
void AddElement(G4Element* element, //the element G4int nAtoms); //nb of atoms in // a molecule
(so no mass fraction, but number of atoms).