<div dir="ltr">Mike --<div>I didn't mean to imply that <span style="font-family:Arial,sans-serif;font-size:16px">beryllium and lithium are all that expensive, just not as dirt cheap as</span><span style="font-family:Arial,sans-serif;font-size:16px"> </span><span style="font-family:Arial,sans-serif;font-size:16px">deuterium. However, it looks like there is a lot of processing needed before being used, and that will drive up the price. I also don't know if the ceramic pebbles need to be replaced from time-to-time. </span></div><div><span style="font-family:Arial,sans-serif;font-size:16px">--Larry</span></div><div><img src="cid:ii_l15wujes2" alt="image.png" width="917" height="396" style="margin-right: 0px;"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 24, 2022 at 10:54 PM Michael Alexander <<a href="mailto:mna.ma@yahoo.com">mna.ma@yahoo.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>
Maybe I misunderstand the last part of Larry’s post: beryllium and lithium are rather common elements. Maybe there are special requirements – purity, for example?<div><br></div><div>Is it possible that some beryllium (Be) and lithium compounds would be suitable for the neutron multipliers? Pure lithium oxidizes easily, so a stable compound might have practical advantages. Beryllium is stable, but BeO might be less expensive (I don’t know).</div><div><br></div><div>A side note: Be is very poisonous, damaging the lungs. When I did an NMR study of Be, the powder sample was encased in a very heavy-duty glass tube. A special facility had manufactured the sample (one<span id="gmail-m_5558876416502492231yahoo-rte-cursor-span"></span> wouldn’t buy it on Amazon, I think … although I haven’t checked).</div><div><br></div><div> – Mike Alexander<br><br><br><br><p style="font-size:15px;color:rgb(113,95,250);padding-top:15px;margin-top:0px">On Thursday, March 24, 2022, 12:33 PM, L Wittig <<a href="mailto:9423lew@gmail.com" target="_blank">9423lew@gmail.com</a>> wrote:</p><blockquote><div id="gmail-m_5558876416502492231yiv6816763809"><div><div dir="ltr">I watched<span style="font-size:12pt;font-family:Arial,sans-serif"> Rein’s presentation (not the Q&A). He spent a fair amount of time talking about how plentiful and cheap deuterium is. Indeed you can get it from water by simple electrolysis. It could hardly be any cheaper. But he didn't talk about tritium, which is more complicated. If you wanted to buy it it costs ~$300,000/gram and has a 12 yr half life; probably the most expensive material </span><span style="font-family:Arial,sans-serif;font-size:16px">on earth </span><span style="font-size:12pt;font-family:Arial,sans-serif">bar none. (<a rel="nofollow noopener noreferrer" shape="rect" href="https://en.wikipedia.org/wiki/Tritium#:~:text=As%20of%202000%2C%20commercial%20demand,approximately%20US%2430%2C000%20per%20gram." target="_blank">https://en.wikipedia.org/wiki/Tritium#:~:text=As%20of%202000%2C%20commercial%20demand,approximately%20US%2430%2C000%20per%20gram.</a> ) The cost is high because it is a byproduct of breeder reactors. HOWEVER for use for fusion it can be breed inside the reactor by bombardment of beryllium and lithium. Fortunity, there is a lot of research on this (MIT/CFS don't have to develop it.) It does mean you need to procure beryllium and lithium which is a more expensive process than procuring deuterium. Beryllium and lithium blankets for fusion reactors are discussed here starting about one-fourth of the way down: <a rel="nofollow noopener noreferrer" shape="rect" href="https://www.fusion.qst.go.jp/rokkasyo/en/project/blanket.html" target="_blank">https://www.fusion.qst.go.jp/rokkasyo/en/project/blanket.html</a></span><div><img src="cid:17fbf43144bcb971f162" alt="image.png" width="562" height="136"><br clear="none"></div><div><br clear="none"></div></div><br clear="none"><div><div id="gmail-m_5558876416502492231yiv6816763809yqt78302"><div dir="ltr">On Thu, Mar 24, 2022 at 8:14 AM john rudy <<a rel="nofollow noopener noreferrer" shape="rect" href="mailto:jjrudy1@comcast.net" target="_blank">jjrudy1@comcast.net</a>> wrote:<br clear="none"></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-US"><div><p><span style="font-size:12pt;font-family:Arial,sans-serif">85 minutes<u></u><u></u></span></p><p><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><div><p><span style="font-size:10pt;font-family:Arial,sans-serif">John Rudy<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">781-861-0402<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">781-718-8334 (cell)<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><a rel="nofollow noopener noreferrer" shape="rect" href="mailto:John.rudy@alum.mit.edu" target="_blank"><span style="color:rgb(5,99,193)">John.rudy@alum.mit.edu</span></a> <u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">13 Hawthorne Lane<u></u><u></u></span></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">Bedford, MA 01730-1047<u></u><u></u></span></p><p><img id="gmail-m_5558876416502492231yiv6816763809gmail-m_4952363874543508873Picture_x0020_2" border="0" width="99" height="94" style="width: 1.0312in; min-height: 0.9791in;" src="cid:17fbf43144a4cff311"><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u><u></u></span></p></div><p><span style="font-size:12pt;font-family:Arial,sans-serif"><u></u> <u></u></span></p><div><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in"><p><b>From:</b> Robert Primak <<a rel="nofollow noopener noreferrer" shape="rect" href="mailto:bobprimak@yahoo.com" target="_blank">bobprimak@yahoo.com</a>> <br clear="none"><b>Sent:</b> Thursday, March 24, 2022 6:03 AM<br clear="none"><b>To:</b> Lex Computer Group <<a rel="nofollow noopener noreferrer" shape="rect" href="mailto:lctg@lists.toku.us" target="_blank">lctg@lists.toku.us</a>>; john rudy <<a rel="nofollow noopener noreferrer" shape="rect" href="mailto:jjrudy1@comcast.net" target="_blank">jjrudy1@comcast.net</a>><br clear="none"><b>Subject:</b> Re: [Lex Computer & Tech Group/LCTG] Fusion<u></u><u></u></p></div></div><p><u></u> <u></u></p><div><div id="gmail-m_5558876416502492231yiv6816763809gmail-m_4952363874543508873ydpe1c52c90yiv9517024821"><div><div><div><p><span style="font-size:10pt;font-family:Helvetica,sans-serif">We haven't had a session on fusion in awhile. Would this update take a whole session? Are there any other items to group with this topic?<u></u><u></u></span></p></div><div><p><span style="font-size:10pt;font-family:Helvetica,sans-serif"><u></u> <u></u></span></p></div><div><p><span style="font-size:10pt;font-family:Helvetica,sans-serif">-- Bob Primak<u></u><u></u></span></p></div><div><p><span style="font-size:10pt;font-family:Helvetica,sans-serif"><u></u> <u></u></span></p></div><div><p><span style="font-size:10pt;font-family:Helvetica,sans-serif"><u></u> <u></u></span></p></div></div></div></div></div><div id="gmail-m_5558876416502492231yiv6816763809gmail-m_4952363874543508873yiv9517024821yqt92371"><div><p>On Wednesday, March 23, 2022, 07:55:22 PM EDT, john rudy <<a rel="nofollow noopener noreferrer" shape="rect" href="mailto:jjrudy1@comcast.net" target="_blank">jjrudy1@comcast.net</a>> wrote: <u></u><u></u></p></div><div><p><u></u> <u></u></p></div><div><p><u></u> <u></u></p></div><div><div id="gmail-m_5558876416502492231yiv6816763809gmail-m_4952363874543508873yiv9517024821"><div><div><p><span style="font-size:12pt;font-family:Arial,sans-serif">Here is Rein’s recent Fusion talk. It is fascinating. Start at about 7 mins after the stuff dealing with my class and out reunion</span><u></u><u></u></p><p><span style="font-size:12pt;font-family:Arial,sans-serif">John</span><u></u><u></u></p><p><span style="font-size:12pt;font-family:Arial,sans-serif"> </span><u></u><u></u></p><p><span style="font-size:12pt;font-family:Arial,sans-serif"><a rel="nofollow noopener noreferrer" shape="rect" href="https://1967.alumclass.mit.edu/s/1314/2015/club-class-main.aspx?sid=1314&gid=58&pgid=60177" target="_blank">https://1967.alumclass.mit.edu/s/1314/2015/club-class-main.aspx?sid=1314&gid=58&pgid=60177</a></span><u></u><u></u></p><p><span style="font-size:12pt;font-family:Arial,sans-serif"> </span><u></u><u></u></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">John Rudy</span><u></u><u></u></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">781-861-0402</span><u></u><u></u></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">781-718-8334 (cell)</span><u></u><u></u></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"><a rel="nofollow noopener noreferrer" shape="rect" href="mailto:John.rudy@alum.mit.edu" target="_blank">John.rudy@alum.mit.edu</a> </span><u></u><u></u></p><p><span style="font-size:10pt;font-family:Arial,sans-serif"> </span><u></u><u></u></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">13 Hawthorne Lane</span><u></u><u></u></p><p><span style="font-size:10pt;font-family:Arial,sans-serif">Bedford, MA 01730-1047</span><u></u><u></u></p><p><img id="gmail-m_5558876416502492231yiv6816763809gmail-m_4952363874543508873yiv9517024821Picture_x0020_1" border="0" width="99" height="94" style="width: 1.0312in; min-height: 0.9791in;" src="cid:17fbf43144a4cff311"><u></u><u></u></p><p> <u></u><u></u></p></div></div></div><p>===============================================<br clear="none">::The Lexington Computer and Technology Group Mailing List::<br clear="none">Reply goes to sender only; Reply All to send to list.<br clear="none">Send to the list: <a rel="nofollow noopener noreferrer" shape="rect" href="mailto:LCTG@lists.toku.us" target="_blank">LCTG@lists.toku.us</a> Message archives: <a rel="nofollow noopener noreferrer" shape="rect" href="http://lists.toku.us/private.cgi/lctg-toku.us" target="_blank">http://lists.toku.us/private.cgi/lctg-toku.us</a><br clear="none">To subscribe: email <a rel="nofollow noopener noreferrer" shape="rect" href="mailto:lctg-subscribe@toku.us" target="_blank">lctg-subscribe@toku.us</a> To unsubscribe: email <a rel="nofollow noopener noreferrer" shape="rect" href="mailto:lctg-unsubscribe@toku.us" target="_blank">lctg-unsubscribe@toku.us</a><br clear="none">Future and Past meeting information: <a rel="nofollow noopener noreferrer" shape="rect" href="http://LCTG.toku.us" target="_blank">http://LCTG.toku.us</a><br clear="none">List information: <a rel="nofollow noopener noreferrer" shape="rect" href="http://lists.toku.us/listinfo.cgi/lctg-toku.us" target="_blank">http://lists.toku.us/listinfo.cgi/lctg-toku.us</a><br clear="none">This message was sent to <a rel="nofollow noopener noreferrer" shape="rect" href="mailto:bobprimak@yahoo.com." target="_blank">bobprimak@yahoo.com.</a><br clear="none">Set your list options: <a rel="nofollow noopener noreferrer" shape="rect" href="http://lists.toku.us/options.cgi/lctg-toku.us/bobprimak@yahoo.com" target="_blank">http://lists.toku.us/options.cgi/lctg-toku.us/bobprimak@yahoo.com</a><u></u><u></u></p></div></div></div></div>===============================================<br clear="none">
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