<html><head></head><body><div class="ydp99f962e2yahoo-style-wrap" style="font-family: courier new, courier, monaco, monospace, sans-serif; font-size: 13px;"><div><div dir="ltr" data-setdir="false">Hello again,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Your definition is correct and Heavyoxygen corresponds to 18-O. Good job.!</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Regards,</div><div dir="ltr" data-setdir="false">Konstantinos</div><div><br></div><div class="ydp99f962e2signature"><div style="font-family:courier, monaco, monospace, sans-serif;font-size:13px;"><div style="color:rgb(0, 0, 0);font-family:Arial;font-size:16px;font-style:normal;font-weight:normal;letter-spacing:normal;orphans:2;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;"><span style="font-style:italic;">-----------------------------------------------------</span></div><span style="color:rgb(0, 0, 0);font-family:Arial;font-size:16px;font-weight:normal;letter-spacing:normal;orphans:2;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;font-style:italic;"> Konstantinos Chatzipapas<br> Medical Physicist, </span><span style="color:rgb(0, 0, 0);font-family:Arial;font-size:16px;font-weight:normal;letter-spacing:normal;orphans:2;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;font-style:italic;">MSc<br></span><div style="color:rgb(0, 0, 0);font-family:Arial;font-size:16px;font-style:normal;font-weight:normal;letter-spacing:normal;orphans:2;text-indent:0px;text-transform:none;white-space:normal;widows:2;word-spacing:0px;"><div><span style="font-style:italic;"> <span style="font-weight:bold;">University of Patras</span></span></div><div><span style="font-style:italic;"><span style="font-weight:bold;"><br></span></span></div><div dir="ltr"><span style="font-style:italic;"><span style="font-weight:bold;"> web: <a href="http://physicsfeed.blogspot.com/" rel="nofollow" target="_blank">Physics Magazine</a></span></span></div></div></div></div></div>
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Στις Κυριακή, 4 Απριλίου 2021, 08:20:40 μ.μ. EEST, ο χρήστης APSARA TENNAKOON <apsara@connect.hku.hk> έγραψε:
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<div><div id="yiv1198808782"><div><div dir="ltr">Thank you Konstantinos,<div><br clear="none"><div>Could you help advise if GATE allows me to define<i> </i>a material containing <i>a specific isotope </i>of an element (e.g. 18-O). I am trying to simulate interactions of a proton beam in 18-O enriched water.</div><div><br clear="none"></div><div>I have tried to define a new element 'Heavyoxygen' (S = Oh) with Z = 8., A = 17.999 g/mole, and a new material Heavywater composed of H and Oh in GateMaterials.db. My concern is if GATE recognizes Oh as 18-O and knows to use the associated cross-sections for interactions with e.g. protons. </div><div><br clear="none"></div><div>Please advise. </div><div><br clear="none"></div><div>Thank you!</div><div>Apsara</div></div></div><br clear="none"><div class="yiv1198808782yqt1331273969" id="yiv1198808782yqt06912"><div class="yiv1198808782gmail_quote"><div class="yiv1198808782gmail_attr" dir="ltr">On Sat, Apr 3, 2021 at 3:04 PM APSARA TENNAKOON <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:apsara@connect.hku.hk" target="_blank" href="mailto:apsara@connect.hku.hk">apsara@connect.hku.hk</a>> wrote:<br clear="none"></div><blockquote class="yiv1198808782gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;"><div dir="ltr">Thank you, Konstantinos,<br clear="none"><br clear="none">Sorry, to clarify, I am trying to define 18-O enriched water in GATE. Does GATE allow one to define an <i>isotope</i> of an element (e.g. <u>18</u>-O) - and hence 18-O water - in GateMaterials.db, and have e.g. protons interacting with it using the relevant reaction cross-sections for <u>18</u>-O? <div><br clear="none"></div><div>Thank you!</div><div><br clear="none"></div><div>Apsara Tennakoon</div></div><br clear="none"><div class="yiv1198808782gmail_quote"><div class="yiv1198808782gmail_attr" dir="ltr">On Sat, Apr 3, 2021 at 1:08 PM Konstantinos P. Chatzipapas <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:konhat88@yahoo.gr" target="_blank" href="mailto:konhat88@yahoo.gr">konhat88@yahoo.gr</a>> wrote:<br clear="none"></div><blockquote class="yiv1198808782gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;"><div><div style="font-family:courier, monaco, monospace, sans-serif;font-size:13px;"><div><div dir="ltr">Hello Apsara,</div><div dir="ltr"><br clear="none"></div><div dir="ltr">What exactly do you mean by enriched materials?? You can insert any kind of material in GateMaterials.db.</div><div dir="ltr"><br clear="none"></div><div dir="ltr"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://opengate.readthedocs.io/en/latest/materials.html">https://opengate.readthedocs.io/en/latest/materials.html</a><br clear="none"></div><div><br clear="none"></div><div><br clear="none"></div><div dir="ltr">Regards,</div><div dir="ltr">Konstantinos</div><div><br clear="none"></div><div><div style="font-family:courier, monaco, monospace, sans-serif;font-size:13px;"><div style="color:rgb(0,0,0);font-family:Arial;font-size:16px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;"><span style="font-style:italic;">-----------------------------------------------------</span></div><span style="color:rgb(0,0,0);font-family:Arial;font-size:16px;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-style:italic;"> Konstantinos Chatzipapas<br clear="none"> Medical Physicist, </span><span style="color:rgb(0,0,0);font-family:Arial;font-size:16px;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-style:italic;">MSc<br clear="none"></span><div style="color:rgb(0,0,0);font-family:Arial;font-size:16px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;"><div><span style="font-style:italic;"> <span style="font-weight:bold;">University of Patras</span></span></div><div><span style="font-style:italic;"><span style="font-weight:bold;"><br clear="none"></span></span></div><div dir="ltr"><span style="font-style:italic;"><span style="font-weight:bold;"> web: <a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://physicsfeed.blogspot.com/">Physics Magazine</a></span></span></div></div></div></div></div>
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Στις Παρασκευή, 2 Απριλίου 2021, 10:44:25 μ.μ. EEST, ο χρήστης APSARA TENNAKOON <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:apsara@connect.hku.hk" target="_blank" href="mailto:apsara@connect.hku.hk">apsara@connect.hku.hk</a>> έγραψε:
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<div><div id="yiv1198808782gmail-m_-3650016595843273124gmail-m_-1900201658104949184yiv2973922382"><div dir="ltr">Dear GATE users,<div><br clear="none"></div><div>Is it possible to define enriched materials in GATE? I would like to simulate a proton beam in e.g. 50% 18-O enriched water, and score proton-induced activation, to attempt to replicate the TOPAS simulations in this work: <br clear="none"></div><div><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://doi.org/10.1016/j.radphyschem.2021.109385">https://doi.org/10.1016/j.radphyschem.2021.109385<br clear="none"></a></div><div><br clear="none"></div><div>Thank you!</div><div><br clear="none"></div><div>Best regards,</div><div><br clear="none"></div><div>Apsara Tennakoon</div><div>Masters student - Medical Physics</div><div>The University of Sydney</div></div>
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