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<body class='hmmessage'><div dir='ltr'>Hello, I'm trying to simulate positron annihilitaion for 22-Na in PMMA.<div><br><div>I would like to know wich is the best physics list in this case, because I have problems with my list (standard EM).</div><div><br></div><div>Thank you very much.</div><div><br></div><div>Andrea.</div><div><br></div><div><br></div></div> </div></body>
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