Re: p+U reaction

From: Andrzej Wojciechowski <andrzej_at_cyf.gov.pl>
Date: Mon, 19 Jul 2010 16:39:26 +0400

Dear Lucia
Do you explain me why the total fluence of neutrons scored with the
USRBDX estimator, crossing the boundary between region R3 and R4
is diferent than the "Number of secondaries generated in inelastic
interaction per beam particle" for neutron?
Kind regard
Andrzej

Dnia 15-07-2010, czw o godzinie 14:41 +0200, Lucia Sarchiapone pisze:
> Dear Andrzej,
>
> you are probably looking at the total fluence of neutrons scored with
> the USRBDX estimator, crossing the boundary between region R3 and R4.
> In my opinion if you want to look for the number of neutrons generated
> per primary proton you should look at the standard output file (*.out).
> In the list called "Number of secondaries generated in inelastic
> interaction per beam particle" you will find that neutrons are something
> like 37.8 (depending on the number of primaries you run in the
> simulation). This value is much closer to the experimental one.
> Cheers,
>
> Lucia
>
>
> On Jul 14, 2010 04:27 PM, Andrzej Wojciechowski <andrzej_at_cyf.gov.pl>
> wrote:
>
> > Dear FLUKA users
> > I am traying calculate the total number of neutron produced during
> > reaction p+U-238 (see attachment) (1.22GeV)
> > The experimental result[1] equal to 38.8+-5%,
> > the calculation result egual to 44.0
> > What am I doing badly?
> >
> > Kind regards
> > Andrzej
> >
> > [1] L. Pienkowski,* F. Goldenbaum, D. Hilscher,=C3=A2? and U. Jahnke,
> > Neutron
> > multiplicity distributions for 1.94 to 5 GeV/c proton-, antiproton-,
> > pion-, kaon-,and deuteron-induced spallation reactions on thin and
> > thick
> > targets.PHYSICAL REVIEW C VOLUME 56, NUMBER 4 OCTOBER 1997
Received on Mon Jul 19 2010 - 11:49:07 CEST

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