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Forum: Hadronic Processes
Re: Question Gammas from neutron capture on Cd-113 (Steven Brown)
Date: 03 Jul, 2015
From: michel maire <michel maire>

On Thu, 02 Jul 2015 18:35:54 GMT, Steven Brown wrote:
> I've simulated radiative capture of thermal neutrons on Cd-113 and
> recorded the energy of each gamma ray produced from deexcitation. I used
> Geant4-10.0.2/G4NDL4.4 and the G4NeutronHPCapture model. The result is
> shown in the attached histogram. Although I do get a number of expected
> lines ( http://www.nndc.bnl.gov/capgam/byn/page128.html ), they occur
> with the wrong yield and alongside other unexpected lines. To make
> things worse, there is a continuum of gammas beneath the discrete lines.
> I have a several questions:
> 
> Why is this incorrect result produced? Am I missing something with the
> physics settings? If not, are the models likely to improve in the near
> future?
> 

 In attachement, a run of Hadr03 and the gamma plot, in linear and log scales.

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/07/03/06.07-2907-Brown.mac.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/07/03/06.07-59963-out.txt
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/07/03/06.07-15747-nCapt-lin.gif
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2015/07/03/06.07-5269-nCapt-log.gif

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