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None Re: Seemingly incorrect (n,alpha) cross section on Cu65 

Forum: Hadronic Processes
Re: Warning Seemingly incorrect (n,alpha) cross section on Cu65 (Ben Loer)
Re: None Re: Seemingly incorrect (n,alpha) cross section on Cu65 (Koi, Tatsumi)
Date: 15 Mar, 2012
From: Ben Loer <Ben Loer>

Hi Tatsumi,

> I could not reproduce your problem by the 1 M events simulation of 1MeV
> neutron on G4_Cu target. I did this on v9.5 with NDL4.0 with Shielding
> physics list.
> 

Hmmm. I also couldn't reproduce with a slightly modified DMX physics list from the undergound example in a different framework.

Has Shielding been updated between 4.9.4.p02 and 4.9.5? Meanwhile I will try to reconstruct with a simpler setup (our current list inherits from Shielding and adds optics and radioactive decay processes).

> One point, the cross section of Cu65(n,a) reaction will not be ZERO
> until the energy down to 0.11MeV, but I do not believe this is the
> reason your problem.

Yes, you're right; I was just looking at the plot and not the actual data points.

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