Dear Guanying Zhu
Low-energy neutron (<20MeV) interactions are not simulated as exclusive processes but using average cross sections within energy groups for neutron scattering, residual nucleus production and gamma generation. Charged particles are not created explicitly (except for hydrogen recoils and protons from 14N(n,p) reactions) but their energy is deposited on the spot.
Therefore, the code simulates the 40Cl production but does not generate explicitly the proton related to the reaction.
You can find more information, for example in the FLUKA course lecture on low energy neutrons.
https://indico.cern.ch/event/442634/contributions/1096544/attachments/1185163/1717805/10_Low_Energy_Neutrons_2015.pdf
Cheers
Stefan
From: owner-fluka-discuss_at_mi.infn.it [mailto:owner-fluka-discuss_at_mi.infn.it] On Behalf Of Zhu, Guanying
Sent: 11 January 2017 21:02
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: Cl40 production in Ar40
Dear fluka users,
I’m simulating Cl40 production in pure liquid Ar40. My beam particles are hundred GeV muons.
I recorded the interactions under mgdraw.f.
IF (ICRES .EQ. 17 .AND. IBRES .EQ. 40) THEN
do ip = 1, NP
WRITE(80, *) NCASE, JTRACK, ETRACK, ICODE,
& ICHTAR, IBTAR, IBRES, ICRES, ip, KPART(ip), NP
end do
END IF
From the output, I can understand muon captures and (n,p) interactions with ICODE 101.
However, for low energy neutrons (ICODE=300), I see (n,n+gamma), which doesn’t make sense to me.
Does anyone know how to interpret the low energy neutron events?
Thanks!
Guanying Zhu
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Received on Thu Jan 12 2017 - 13:42:21 CET