From: Andrzej Wojciechowski <andrzej_at_cyf.gov.pl>

Date: Mon, 06 Jun 2011 19:57:38 +0400

Date: Mon, 06 Jun 2011 19:57:38 +0400

Dear Alberto

Thank you for your fast answer.

How can I calculated y89(n,2n)y88 reactions using only primary

neutrons? I would like to calculate the (n,3n), (n,4n) and (n,5n)

reactions too.

Kind reagards

Andrzej

Dnia 03-06-2011, piÄ… o godzinie 10:36 -0700, Alberto Fasso' pisze:

*> Andrzej,
*

*>
*

*> how do you calculate a cross section from RESNUCLEi results? Your result
*

*> would only be valid if you used an extremely thin target, and in any
*

case you

*> have no way to know if the target was thin enough.
*

*> I suspect that the difference you get with respect to TENDL comes from
*

the fact

*> that as energy increases you produces more and more secondary neutrons,
*

which

*> can contribute to the reaction you are interested in.
*

*> In other words, you probably get y89(n,2n)y88 reactions not only due to
*

primary

*> neutrons, but also to secondaries: and this is why the "FLUKA cross
*

section"

*> appears to be larger.
*

*>
*

*> Alberto
*

*>
*

*>
*

*> On Wed, 1 Jun 2011, Andrzej wrote:
*

*>
*

*> > Dear FLUKA experts
*

*> > I would like to calculate the cross section of y89(n,2n)y88 reaction
*

using

*> > RESNUCLEi command.(see ny200.inp).
*

*> > Unfortunately the results are not correctly for beam energy greater than
*

*> > 70MeV (comparing with TENDL data) (see TENDL-n2n.doc.)
*

*> > Are TENDL evaluated data reliable?
*

*> > What is the reeaons? What do I do badly?
*

*> > Kind regards
*

*> > Andrzej
*

Received on Mon Jun 06 2011 - 17:42:54 CEST

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