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Question few percent of an element 

Forum: Geometry
Date: 29 Jan, 2014
From: Sergio Lo Meo <Sergio Lo Meo>

Dear G4 Experts,

in my setup, I built a material in which there are small percentages of certain elements, for example:

...
 PbF->AddElement(elTi,fractionmass=3.453E-8*perCent);
 PbF->AddElement(elCr,fractionmass=1.54E-6*perCent);
 PbF->AddElement(elFe,fractionmass=7.035E-7*perCent);
....

Are these elements really considered by Geant4?

In the summary of the material (at start up) they are reported with percentage of 00.00%...

I hope it's just a limitation of the display of significant digits...

The question came to me studying spallation reactions with protons to produce the neutron flux. Many of these elements have big cross sections for neutron capture and currently I can not see their contribution in the neutron flux output.

Thanks in advance.

Best Regards.

Sergio

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1 None: Re: few percent of an element   (michel maire - 29 Jan, 2014)
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