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Idea Re: Inelastic interaction models and cross sections 

Forum: Hadronic Processes
Re: Question Inelastic interaction models and cross sections
Date: 07 May, 2012
From: Vladimir Ivanchenko <Vladimir Ivanchenko>

Hello,

Sorry for very late answers.

>Considering an interaction of a primary C12 with a proton in the PE target, >the first question would be which cascade (binary or light ion binary) is >used for a possible inelastic reaction, since in binary light ion cascade the >lightest particle (here: proton) is considered as projectile? If it's binary >light ion cascade, the Tripathi and Shen total cross sections are used.

For protons and neutrons the Binary cascade is used. For C12 ion the Binary Light Ion cascade is used.

>Precompound is the default de-excitation model for the excited nuclei after >cascade. Is there an evaporation model standardly invoked for de-excitation >after precompound de-excitation? Maybe G4Evaporation, Fermi-Breakup, SMF etc. >or even all?

Yes, exactly.

>Since the channel cross sections for producing specific fragments, e.g. C10 >in the reaction p + C12 -> C10 + X have sparse data (see EXFOR database plot >in attachment), I would like to know, how these channel cross sections are >implemented? Is there some kind of parametrization?

There is no parameterisation inside Binary cascade, there is step by step sampling of a cascade. The alternative may be usage of QMD model - which is slower but more accurate model.

VI

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1 Question: Re: Inelastic interaction models and cross sections   (HadronTherapy_Aachen - 08 May, 2012)
(_ None: RE: Inelastic interaction models and cross sections   (Vladimir Ivantchenko - 08 May, 2012)
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