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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Also see the attached article in this regard.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Sundaresan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> Isotope-prod [mailto:isotope-prod-bounces@jlab.org]
<b>On Behalf Of </b>Pavel Degtiarenko<br>
<b>Sent:</b> Tuesday, May 03, 2016 5:30 PM<br>
<b>To:</b> isotope-prod@jlab.org<br>
<b>Subject:</b> [EXTERNAL] Re: [Isotope-prod] CERN Courier article<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi All,<br>
<br>
Technically these Tb isotopes are not alpha emitters. <br>
However, Tb-152 decays to Gd-152, which emits alphas (but the half-life is ~10^14 Yrs)<br>
Tb-152 (17.5h) has a 344 keV gamma line<br>
Tb-155 (5.3d) has 86 keV and 105 keV lines<br>
<br>
I do not see a comfortable path to get those in gamma-nuclear reactions.<br>
They are pretty far from the major stable nuclei<br>
Tb-159(100%) can be used - but it's a lot of neutrons to detach (and it will be bad specific activity)<br>
Dy-156(0.056%) targets would need severe isotope separation (that would be a good candidate target if we can get it).<br>
<br>
Tb-149 is an alpha emitter, but it's way too far from stability<br>
<br>
Tb-161(6.9d, beta- 138 and 157 keV, x-rays) is listed as perspective R&D isotope in
<a href="https://cas.web.cern.ch/cas/Austria2015/Lectures/6Wed03/Koester.pdf">https://cas.web.cern.ch/cas/Austria2015/Lectures/6Wed03/Koester.pdf</a><br>
That one can be obtained from Dy-162(25%) in a (gamma,p) reaction relatively cleanly.<br>
<br>
Pavel<br>
<br>
On 05/03/2016 03:41 PM, Hutton Andrew wrote:<o:p></o:p></p>
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<p class="MsoNormal">Everyone <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am attaching an article on a radioisotope that I have never heard of. Is it something we could produce here? <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Andrew<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"> <img border="0" width="418" height="325" id="_x0037_C506926-F92D-49CA-8DDD-B2AD3E44E32E" src="cid:image001.png@01D1A567.A82003E0"><o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Isotope-prod mailing list<o:p></o:p></pre>
<pre><a href="mailto:Isotope-prod@jlab.org">Isotope-prod@jlab.org</a><o:p></o:p></pre>
<pre><a href="https://mailman.jlab.org/mailman/listinfo/isotope-prod">https://mailman.jlab.org/mailman/listinfo/isotope-prod</a><o:p></o:p></pre>
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<p class="MsoNormal"><o:p> </o:p></p>
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