|Message: Re: interaction force in the origin of coordinates||Not Logged In (login)|
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Dear José, Forced interaction functionnality is under develoment at this stage. However, we can discuss to find a solution to your problem. Please, let me ask a few more details if you are interested to go further: - you shoot a (primary) gamma - at its point of emission you want this gamma to interact - do you want the same interaction to always happen (ie : always compton, or always pair creation, or always photonuclear, etc.) or do you want any valid interaction to randomly occur (ie the gamma interacts, and you don't care about what process makes the interaction) ? - if the gamma survives to the interaction (say, a compton process occured) I guess you don't want to re-force the interaction : is this correct ? Cheers, Marc Le 09/06/2011 21:42, Gumplinger Peter a écrit : > *** Discussion title: Event and Track Management > > What you want to do is not so clear. How do you want your photon to > interact immediately, via G4PhotoElectricEffect, G4ComptonScattering, or > G4GammaConversion? These are competing processes and the interaction > length sampled accordingly decides which of them wins out. If, however, > you want only one type of interaction, and you have access to the G4 > source, you may set: > > *condition = Forced; > > in PostStepGetPhysicalInteractionLength > > There may well be more elegant ways to accomplish this not requiring > access to the source. Please, read about 'biasing' options. > > ------------------------------------------------------------- > Visit this GEANT4 at hypernews.slac.stanford.edu message (to reply or unsubscribe) at: > http://hypernews.slac.stanford.edu/HyperNews/geant4/get/eventtrackmanage/1012/1.html
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