problems with 252Cf source

Dear experts,

I want to model a source of Californium-252. Because of the complex
energy spectrum and the isotropy a source routine is necessary. I
found a source routine written and posted in November 2009 by Alberto
Fasso. I compiled and linked it and inserted a SOURCE-card with the
first WHAT set 1 in my input file and tried a simple sphere of vacuum,
using an USRBIN-card for neutrons. The results do not match with my
comprehension of an isotropic source, because there is only a beam in
one direction. Changing the parameters in the BEAM and BEAMPOS cards,
I couldn?t improve the results. Is there anything wrong in my input
file? Is the use of the source routine the wrong approach?

Looking forward to get helpful answers!
Best regards
Carolin
Received on Fri Jun 22 2012 - 12:27:25 CEST