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Forum: Physics List
Re: Question User Interface Command "/physics_engine/tailor/GammaNuclear" (Adrian Vogel)
Date: 09 Feb, 2006
From: Vladimir IVANTCHENKO <vnivanch@mail.cern.ch>

On Wed, 8 Feb 2006, Adrian Vogel wrote:

> *** Discussion title: Physics List
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/phys-list/209"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Hello,
> 
> I saw that there is a user interface command "
> /physics_engine/tailor/GammaNuclear on|off " (and a similar one for
> synchrotron radiation). However, I could not find any further
> information on this in the manual, the examples, or the forum. I saw
> that the default value of both commands is " false ", but the data
> member " G4EmExtraPhysics::gammNucOn " is initialised to " true ",
> whereas " G4EmExtraPhysics::synchOn " is initialised to " false ". "
> G4EmMessenger::GetCurrentValue " is unfortunately not implemented.
> 
> Is it right that one will get photonuclear / electronuclear reactions,
> but no synchrotron radiation by default (i.&nbsp;e. without calling the
> above commands)? Does this hold for all built-in physics lists?
> 
> Thanks in advance,
> Adrian
> 

Hello,

Yes, for 8.0 in all predefined PhysicsLits gamma-nuclear interaction is ON 
by default, it is written in release notes. We choose this variant of 
defaults, because there are no visible CPU penalty, if this physics is 
simulated.

About synchrotron radiation: we choosed OFF by default (as it was before), 
because field is not exist in each application.

Can you, please, briefly describe your application, so for better 
understanding what users need.

VI

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1 Feedback: Re: User Interface Command "/physics_engine/tailor/GammaNuclear"   (Adrian Vogel - 09 Feb, 2006)
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