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Forum: Hadronic Processes
Re: None The unknown gamma rays from HP neutron inelastic process (yanxin0221)
Date: 08 Apr, 2014
From: John McFee <John McFee>

The 9.63 line is likely a transition from the 9.641 MeV level in 12C to the ground state (Lederer and Shirley 1978 page 12). The 3.21 MeV line is a transition from the 7.654 MeV level in 12C to the 4.439MeV level (same page). Both transitions appear to be possible from the (n,n'gamma) , (n,p gamma) or (n,alpha gamma) reactions.On Tue, 08 Apr 2014 08:09:34 GMT, yanxin0221 wrote:

> Hi everyone, 
>     I'm trying to simulation the gamma resulting from interaction of 14MeV via inelastic process. I am shooting a 14MeV neutron beam to a box of 12C. The gamma-rays I can get from the inelastic process are 9.63MeV 4.43MeV 3.21MeV. And the 4.43MeV is familiar to us as the atomic deexcitation of 12C. But the 9.63MeV and 3.21MeV come from the atomic deexcitation or some other processes?I think there are two probable reasons: Firstly,The process I use ( QGSP_BIC_HP in geant 4.9.6) does n&#65533;ot have the process of inelastic process and then atomic Deexcitation. Secondarly,the 9.63MeV and 3.21MeV are the atomic deexcitation of 12C. And how can I get the theoretical atomic deexcitation of target nucleus in inelastic process. 
>    What can I do? Thanks for your help! 
> 

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