|Message: define a sphere shell source||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)|
Hi, I'm trying to define a neutron source which needs to meet the following requirements: 1.shape: sphere shell volume source,i.e. inter radius 1700cm, outer radius 4100cm. 2.energy: monoenergy 3.momentum: inwards & outwards, i.e. neutrons should move in the direction of both towards center and the opposite. (I found an example of a sphere-shell-shape source in the file <G4sourcedir>/examples/extended/eventgenerator/particleGun but it seems that all particles are moving outwards.
I have also considered using two sphere surface sources, but I have to let the two sources emit neutrons in opposite direction (outside surface outwards, inside surface inwards), which has also not achieved yet.
Can anyone give me some help or advice? Thank you sincerely, Jincai.
|Inline Depth:||Outline Depth:||Add message:|