<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Yes, our engineers strongly advise against it. They prefer that we order the filament just before installing it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Yaroslav Tsybovsky, Ph.D. (contractor)<o:p></o:p></p>
<p class="MsoNormal">Senior Scientist & Head<o:p></o:p></p>
<p class="MsoNormal">Vaccine Research Center Electron Microscopy Unit<o:p></o:p></p>
<p class="MsoNormal">Frederick National Laboratory for Cancer Research<o:p></o:p></p>
<p class="MsoNormal" style="mso-line-height-alt:10.05pt;text-autospace:none"><span style="color:black">Leidos Biomedical Research, Inc.
<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-line-height-alt:10.05pt;text-autospace:none"><span style="color:black">Post Office Box B
<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-line-height-alt:10.05pt;text-autospace:none"><span style="color:black">Frederick, Maryland 21702
<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-line-height-alt:10.05pt;text-autospace:none"><span style="color:black">Phone: 301-846-7550
<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Morgan, David Gene <dagmorga@indiana.edu> <br>
<b>Sent:</b> Friday, October 15, 2021 10:27 AM<br>
<b>To:</b> 3dem@ncmir.ucsd.edu<br>
<b>Subject:</b> [3dem] LaB6 question<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Hi,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Does anyone worry about keeping a spare LaB6 filament for several years before using it?<o:p></o:p></span></p>
</div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div id="Signature">
<div>
<div name="divtagdefaultwrapper">
<div name="divtagdefaultwrapper">
<p class="MsoNormal">-- <o:p></o:p></p>
</div>
<div name="divtagdefaultwrapper">
<p class="MsoNormal"> politics is more difficult than physics.<o:p></o:p></p>
</div>
<div name="divtagdefaultwrapper">
<p class="MsoNormal"> A. Einstein<o:p></o:p></p>
</div>
<div name="divtagdefaultwrapper">
<p class="MsoNormal"><o:p> </o:p></p>
<div name="divtagdefaultwrapper">
<p class="MsoNormal"> David Gene Morgan<br>
Electron Microscopy Center<br>
047E Simon Hall<br>
IU Bloomington<br>
812 856 1457 (office)<br>
812 856 3221 (3200)<br>
<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__iubemcenter.indiana.edu&d=DwQFAw&c=-35OiAkTchMrZOngvJPOeA&r=L7-zyQ-04fFCMRqzLIOnx7H0exGZHwIQe_wMPuY600I&m=k1bJh6TfjHlmz00wKqwIW5TNt8AUcGaR-gAKexjA5AQ&s=n7jij5mUPILcG5P4S7qrd09ZcCdcV_rV70UfDvZFJOY&e=">
http://iubemcenter.indiana.edu</a><o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>