<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hello Ezzat Elmoujarkach,<div class=""><br class=""></div><div class="">could you add some more information about your simulation,</div><div class="">i.e. which version of GATE you are using and maybe also the m.mac-files</div><div class="">concerning the physics. This could be useful to help you in this matter.</div><div class=""><br class=""></div><div class="">Kind regards,</div><div class=""><br class=""></div><div class="">Uwe Pietrzyk</div><div class=""><br class=""><div class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;">---------------------------------------</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Prof. Dr. Uwe Pietrzyk<br class="">Diplom-Physiker<br class="">Am Anger 18<br class="">50374 Erftstadt<br class="">Tel: +49-2235-922038<br class="">Fax: +49-2235-922039<br class="">Mobil: +49-172-213-2155<br class="">eMail: <a href="mailto:Uwe.Pietrzyk@web.de" class="">Uwe.Pietrzyk@web.de</a></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;">---------------------------------------</div></div>
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<br class=""><div><blockquote type="cite" class=""><div class="">On 19. Nov 2018, at 17:32, Ezzat Elmoujarkach <<a href="mailto:ezzat.elmo@gmail.com" class="">ezzat.elmo@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div dir="ltr" class="">Dear GATE users,<div class=""><br class=""></div><div class="">I've been working on some simulation using a neutron source with energy 2.5 MeV (mean energy of Cf-252). I noticed that the neutrons interact with the world material (air or vacuum) producing electrons and gamma. However, as soon as they touch any object (water phantom, a sheet or anything in the simulation) the neutron deposit all it's energy in the first layer of the object and no secondary radiations are produced. Is this how the simulation should work? or there is something wrong I need to fix?</div><div class=""><br class=""></div><div class="">I'm using vGate v8.1 and the physics list emstandard and QGSP_BIC_HP</div><div class=""><br class=""></div><div class="">Best Regards,</div><div class=""><br class=""></div><div class="">Ezzat</div></div>
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