<html>
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<div class="moz-cite-prefix">Dear Sundaresun,<br>
<br>
It's doubtful that the solid salt form presents an advantage in
terms of heat management. As per Google, boiling point of Gallium
Chloride is 201 C, Gallium Bromide 279 C, Gallium Iodide 345 C,
Gallium Sulfate 330 C, Gallium Nitrate melting point is 110 C.
Depositing of 50 kW in the material will make it melt and
vaporize. <br>
<br>
Liquid Gallium metal stays liquid up to the temperature of 2400 C.
This property is what makes it possible to work at high
temperature gradients that allow the management and dissipation of
the high beam power delivered. <br>
<br>
Another disadvantage of salts is that significant portion of beam
energy is spent on activation of elements other than Gallium.<br>
<br>
How expensive would it be to convert metal gallium into the salt
for easier purification?<br>
<br>
Best regards,<br>
Pavel<br>
<br>
On 04/12/2018 01:33 PM, Sundaresan Gobalakrishnan wrote:<br>
</div>
<blockquote type="cite"
cite="mid:2gelkdg3debfrdwo0mcxa71r.1523554395281@email.android.com">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<meta content="text/html; charset=Windows-1252">
Dear Pavel,<br>
<br>
This idea was originally propsed by Jamal, he included this as a
future direction in our previous application (last paragraph, I
think).<br>
<br>
Gallium salts are commercially available
(eg: <a class="moz-txt-link-freetext" href="https://www.sigmaaldrich.com/materials-science/material-science-products.html?TablePage=19295346">https://www.sigmaaldrich.com/materials-science/material-science-products.html?TablePage=19295346</a>)
We don't have to convert liquid for this. <br>
<br>
Salts can be made into a solid target, and its heat management
during bombardment will be easier than liquid.<br>
<br>
Purification will be lot more easier than with liquid target.<br>
<br>
I am guessing it will be cost effective too.<br>
<br>
Best regards,<br>
Sundaresan<br>
<br>
-------- Original Message --------<br>
From: Isotope-prod <a class="moz-txt-link-rfc2396E" href="mailto:isotope-prod-bounces@jlab.org"><isotope-prod-bounces@jlab.org></a> on behalf
of Pavel Degtiarenko <a class="moz-txt-link-rfc2396E" href="mailto:pavel@jlab.org"><pavel@jlab.org></a><br>
Date: Thu, April 12, 2018 1:26 PM -0400<br>
To: <a class="moz-txt-link-abbreviated" href="mailto:isotope-prod@jlab.org">isotope-prod@jlab.org</a><br>
Subject: Re: [Isotope-prod] [EXTERNAL] DOE-FOA<br>
<br>
<div>
<div class="moz-cite-prefix">Dear Sundaresan,<br>
<br>
Could you please list advantages of using the salts, just
briefly for non-professionals.<br>
And how difficult would it be to convert 100 gram of liquid
metal Gallium into a salt form.<br>
<br>
Thanks, and best regards,<br>
Pavel<br>
<br>
On 04/12/2018 11:45 AM, Sundaresan Gobalakrishnan wrote:<br>
</div>
<blockquote type="cite">
<meta name="Generator" content="Microsoft Exchange Server">
<style>
<!--
.EmailQuote
{margin-left:1pt;
padding-left:4pt;
border-left:#800000 2px solid}
-->
</style>
<div>Besides liquid Gallium, production of Cu-67 from Gallium
salts could also be explored via the new application. Good
opportunity.<br>
<br>
Best regards,<br>
Sundaresan</div>
</blockquote>
<br>
</div>
</blockquote>
<p><br>
</p>
</body>
</html>