Dear Guojun Hu,
in the case you describe, the neutron balance density is the sum of all
neutrons produced by fissions inside the bin, minus the neutrons producing the
fissions, divided by the volume of the bin.
For instance, if a reaction is n(fission,2n) the balance contribution by that
reaction is +1 (two outgoing neutrons minus one incoming neutron).
Alberto
On Fri, 20 Jul 2012, huguojun_at_mail.ustc.edu.cn wrote:
> Dear FLUKA experts,
=
> I have a problem about Neutron Balance Density in USRBIN detector. In the
> handbook of fluka, neutron balance density is an "algebraic sum of outgoing
> neutrons minus incoming neutrons for all interactions". For a particular
> bin(such as x[x1,x2],y[y1,y2], z[z1,z2] in a X-Y-Z coordinate system ) in a
> multiplying system which is in an unsteady state, sum of outgoing neutrons
> minus incoming neutrons may be positive, is this sum the number of neutrons
> produced (such as produced by fission)in this bin ?
> Thanks in advance!
> Guojun Hu
Received on Sun Jul 22 2012 - 13:06:09 CEST
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