<html><head></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1494352654249_4942">Hello </div><div dir="ltr" id="yui_3_16_0_ym19_1_1494352654249_6707">I have problem in my out put mac file when I want to define the biasing emition from a radioactivity source in dosimetry application.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1494352654249_7090"> I've tried diffrent theta angles(for example 0-10 deg and phi=0-360 for all ) but when i plot my dose profile, all are same and too narrow in ( cenral slice in a cubic phantom). the corrent plot is just when I define source isotopicly.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1494352654249_7134">what should i define a confined source along z axis correctly ?<br></div></div></body></html>