[Gate-users] 22-Na positron source.

[Andrea González]

Hi again, sorry for my insistence.  I need a 22-Na source emitting positron because I want to study positrons annihilation range.How can I do that?
A kindly collaborator proposses me this:
/gate/source/addSource na22/gate/source/na22/setActivity 10000 Bq/gate/source/na22/gps/particle ion/gate/source/na22/gps/ion 11 22 0 0/gate/source/na22/gps/monoenergy 0. keV/gate/source/na22/gps/type Plane/gate/source/na22/gps/shape Circle/gate/source/na22/gps/radius 0.5 mm/gate/source/na22/gps/angtype iso/gate/source/na22/gps/centre 0. 0. 0. cmIn your physics list you have to enable radioactive decay:/gate/physics/addProcess Decay/gate/physics/addProcess RadioactiveDecay GenericIon
But it isn´t emitting positrons...
Thank you all.
 		 	   		  
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