<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">Dear Hari,<br>
<br>
We will see some indirect activation by neutrons from the
Be-9(gamma,n)Be-8 reaction, where the threshold is low (1.665
MeV). Be-8 decays to 2 alphas.<br>
<br>
There will be no Be-7 production up to ~20 MeV.<br>
<br>
B-10(gamma,n)B-9 threshold is 8.437 MeV; B-9 decays immediately to
Be-9 - no long lived isotopes.<br>
<br>
N-14(gamma,n)N-13 threshold is just above 10 MeV, so no production
there. But at higher energy that will produce a lot of short-lived
activity (~10 min half lifetime).<br>
<br>
If we limit the beam energy at 6 MeV the only source of activation
will be indirect neutrons from the Be-9(gamma,n)Be-8 reaction. I
do not expect a problem here, but it should be evaluated before
planning the tests. <br>
<br>
Best regards,<br>
Pavel<br>
<br>
<br>
<br>
On 06/27/2016 08:35 AM, Hari Areti wrote:<br>
</div>
<blockquote
cite="mid:1635631830.3123476.1467030935196.JavaMail.zimbra@jlab.org"
type="cite">
<div style="font-family: arial, helvetica, sans-serif; font-size:
12pt; color: #000000">
<div>Dear Pavel,<br>
</div>
<div>Thanks for the input.<br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>You are absolutely right abouth hBN, I will add to the
narrative,<br data-mce-bogus="1">
</div>
<div>we do not know what radiation does to hBN's integrity and
its<br>
</div>
<div>properties (thermal conductivity). That is another piece of
data<br>
</div>
<div>that will result from this R&D. If hBN fails, we have a
fall back<br data-mce-bogus="1">
</div>
<div>in ceramic insert. <br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>Two more things that you can shed light on.<br
data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>We claim that low energy tests at LERF will eliminate or
reduce<br data-mce-bogus="1">
</div>
<div>local activity. Keeping to around 6 MeV will help with
tungsten<br data-mce-bogus="1">
</div>
<div>and copper. Is this true for Be and BN?<br
data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>Thanks.<br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>-H<br data-mce-bogus="1">
</div>
<div><br>
</div>
<div><br>
</div>
<hr id="zwchr" data-marker="__DIVIDER__">
<div data-marker="__HEADERS__"><b>From: </b>"Pavel Degtiarenko"
<a class="moz-txt-link-rfc2396E" href="mailto:pavel@jlab.org"><pavel@jlab.org></a><br>
<b>To: </b>"isotope-prod" <a class="moz-txt-link-rfc2396E" href="mailto:isotope-prod@jlab.org"><isotope-prod@jlab.org></a><br>
<b>Sent: </b>Sunday, June 26, 2016 6:50:08 PM<br>
<b>Subject: </b>Re: [Isotope-prod] Updated draft narrative<br>
</div>
<div><br>
</div>
<div data-marker="__QUOTED_TEXT__">
<div class="moz-cite-prefix">Dear Hari,<br>
<br>
Several remarks:<br>
1. On pages 3 and 4 the subtitle <span style="color:
#ff0000;" data-mce-style="color: #ff0000;" color="#ff0000">"</span>
<i style="mso-bidi-font-style: normal"><span
style="text-decoration: underline;"
data-mce-style="text-decoration: underline;"><span
style="font-family:"Times New
Roman";mso-fareast-font-family: "Times New
Roman";mso-ansi-language:EN-GB" lang="EN-GB"><span
style="color: #ff0000;" data-mce-style="color:
#ff0000;" color="#ff0000">Photo-production
Principles"</span> </span></span></i>is repeated
twice. The second one should probably be " <i
style="mso-bidi-font-style: normal"><span
style="text-decoration: underline;"
data-mce-style="text-decoration: underline;"><span
style="font-family:"Times New
Roman";mso-fareast-font-family: "Times New
Roman";mso-ansi-language:EN-GB" lang="EN-GB">Photo-production
Process"</span></span></i><br>
<br>
2. On page 5 the typos are is in the reaction description
(67 should be superscript, and the reaction should be
"gamma,alpha"):<br>
<p class="MsoNormal"
style="margin-bottom:0in;margin-bottom:.0001pt"><span
style="color: #ff0000;" data-mce-style="color: #ff0000;"
color="#ff0000"><span style="font-family:"Times New
Roman";mso-ansi-language:EN-GB" lang="EN-GB">"Similarly,
67Cu can be produced via the <sup>71</sup>Ga (</span><span
style="font-family:Symbol;mso-ansi-language:EN-GB"
lang="EN-GB">g</span></span><span
style="font-family:"Times New
Roman";mso-ansi-language:EN-GB" lang="EN-GB"><span
style="color: #ff0000;" data-mce-style="color:
#ff0000;" color="#ff0000">, p) <sup>67</sup>Cu
reaction, as in this proposal."</span></span></p>
<style>
<!--
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;
mso-font-charset:204;
mso-generic-font-family:swiss;
mso-font-pitch:variable;
mso-font-signature:-1610611985 1073750139 0 0 159 0;}
p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-parent:"";
margin-top:0in;
margin-right:0in;
margin-bottom:10.0pt;
margin-left:0in;
line-height:115%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:Calibri;
mso-fareast-font-family:Calibri;
mso-bidi-font-family:"Times New Roman";}
@page Section1
{size:8.5in 11.0in;
margin:56.7pt 42.5pt 56.7pt 85.05pt;
mso-header-margin:.5in;
mso-footer-margin:.5in;
mso-paper-source:0;}
div.Section1
{page:Section1;}
-->
</style><br>
3. Page 8, last line needs the dot at the end:
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:"Times New Roman""><span
style="color: #ff0000;" data-mce-style="color:
#ff0000;" color="#ff0000">"including studies of
targeted hybrid probes"</span></span></p>
4. Page 16, discussion of the parasitic test at 10 MeV, the
statement <br>
<p class="MsoNormal" style="text-align:justify"><span
style="font-family:"Times New Roman""><span
style="color: #ff0000;" data-mce-style="color:
#ff0000;" color="#ff0000">"This is not a surprising
result because the energy threshold for production is
higher."</span></span><br>
</p>
should be "This is not a surprising result because while the
beam energy is above the production threshold, the cross
section for the alpha particle emission is suppressed by the
nuclear Coulomb barrier."<br>
<br>
5. Page 17, correct <span style="color: #ff0000;"
data-mce-style="color: #ff0000;" color="#ff0000">"<span
style="font-size:11.0pt;line-height:115%;
font-family:"Times New
Roman";mso-fareast-font-family:Calibri;mso-ansi-language:
EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">stay below the
<sup>69</sup>Ga(</span><span
style="font-size:11.0pt;line-height:115%;font-family:Symbol;mso-ascii-font-family:"Times
New
Roman";mso-fareast-font-family:Calibri;mso-hansi-font-family:"Times
New Roman"; mso-bidi-font-family:"Times New
Roman";mso-ansi-language:EN-US;mso-fareast-language:
EN-US;mso-bidi-language:AR-SA;mso-char-type:symbol;mso-symbol-font-family:Symbol"><span
style="mso-char-type:symbol;mso-symbol-font-family:Symbol">g</span></span><span
style="font-size:11.0pt;line-height:115%;font-family:"Times
New Roman";
mso-fareast-font-family:Calibri;mso-ansi-language:EN-US;mso-fareast-language:
EN-US;mso-bidi-language:AR-SA">, 2n)<sup>67</sup>Ga <span
style="mso-spacerun:yes"> </span>because </span>"</span>
<style>
<!--
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;
mso-font-charset:204;
mso-generic-font-family:swiss;
mso-font-pitch:variable;
mso-font-signature:-1610611985 1073750139 0 0 159 0;}
p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-parent:"";
margin-top:0in;
margin-right:0in;
margin-bottom:10.0pt;
margin-left:0in;
line-height:115%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:Calibri;
mso-fareast-font-family:Calibri;
mso-bidi-font-family:"Times New Roman";}
@page Section1
{size:8.5in 11.0in;
margin:56.7pt 42.5pt 56.7pt 85.05pt;
mso-header-margin:.5in;
mso-footer-margin:.5in;
mso-paper-source:0;}
div.Section1
{page:Section1;}
-->
</style> to " <span style="font-size:11.0pt;line-height:115%;
font-family:"Times New
Roman";mso-fareast-font-family:Calibri;mso-ansi-language:
EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">stay
below the <sup>69</sup>Ga(</span><span
style="font-size:11.0pt;line-height:115%;font-family:Symbol;mso-ascii-font-family:"Times
New
Roman";mso-fareast-font-family:Calibri;mso-hansi-font-family:"Times
New Roman"; mso-bidi-font-family:"Times New
Roman";mso-ansi-language:EN-US;mso-fareast-language:
EN-US;mso-bidi-language:AR-SA;mso-char-type:symbol;mso-symbol-font-family:Symbol"><span
style="mso-char-type:symbol;mso-symbol-font-family:Symbol">g</span></span><span
style="font-size:11.0pt;line-height:115%;font-family:"Times
New Roman";
mso-fareast-font-family:Calibri;mso-ansi-language:EN-US;mso-fareast-language:
EN-US;mso-bidi-language:AR-SA">, 2n)<sup>67</sup>Ga <span
style="mso-spacerun:yes"></span><span style="color:
#3333ff;" data-mce-style="color: #3333ff;"
color="#3333ff">reaction threshold</span> because </span>
<style>
<!--
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;
mso-font-charset:204;
mso-generic-font-family:swiss;
mso-font-pitch:variable;
mso-font-signature:-1610611985 1073750139 0 0 159 0;}
p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-parent:"";
margin-top:0in;
margin-right:0in;
margin-bottom:10.0pt;
margin-left:0in;
line-height:115%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:Calibri;
mso-fareast-font-family:Calibri;
mso-bidi-font-family:"Times New Roman";}
@page Section1
{size:8.5in 11.0in;
margin:56.7pt 42.5pt 56.7pt 85.05pt;
mso-header-margin:.5in;
mso-footer-margin:.5in;
mso-paper-source:0;}
div.Section1
{page:Section1;}
-->
</style>"<br>
<br>
<br>
6. I think that at present we don't really have a proof
that hBN target holder will perform as we say it will. One
of the questions to be answered by the tests is how well
this material will withstand the radiation damage. We know
that chemical structure of hBN is close to graphite. There
are studies on the rad. damage to graphite, causing
displacements in the crystal structure and loss of thermal
conductivity. I think we should mention somewhere that we
know about the issue, will do dedicated testing, and will
consider alternatives if hBN won't work.<br>
<br>
Best regards,<br>
Pavel<br>
<br>
On 6/26/2016 4:28 PM, Hari Areti wrote:<br>
</div>
<blockquote
cite="mid:349803214.3015668.1466972936246.JavaMail.zimbra@jlab.org">
<div style="font-family: arial, helvetica, sans-serif;
font-size: 12pt; color: #000000">
<div>I have updated two sections at the end of the
narrative.</div>
<div>It is in the dropbox folder 24June2016 and later. The
name</div>
<div>is 26June2016 draft narrative.</div>
<div><br>
</div>
<div>Section on objectives - rearranged the items.</div>
<div><br>
</div>
<div>Elaborated the summary to ensure that the elements
mentioned in the FOA</div>
<div>are addressed. You may want to elaborate. </div>
<div><br>
</div>
<div>-H</div>
<div><br>
</div>
<div>The elements are:</div>
<div><br>
</div>
<div><br>
</div>
<div>
<ul>
<li style="margin: 0px;">clearly describe how the
outcome would support and enhance the production of
isotopes used for research and applications in
medicine, homeland security, the physical sciences,
biological and geological sciences, energy,
industry, etc.</li>
<li style="margin: 0px;">incorporate effective ways to
train personnel with essential knowledge and skills
related to the production, processing, purification,
and distribution of enriched stable and radioactive
isotopes</li>
<li style="text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Novel
or improved capabilities for inducing transmutation
of atoms in targets to create radioisotopes;</li>
<li style="text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Optimum
selection of the materials and effective design of
targets for the production of radioisotopes;</li>
<li style="text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Innovative
approaches to model and predict behavior of targets
undergoing irradiation in order to optimize yield
and minimize target failures during routine isotope
production;</li>
<li style="text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Chemical
and physical processes to recover and purify
radioisotopes from activated targets, legacy
materials, or facility components;</li>
<li style="text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Automation
of production and processing techniques to enhance
efficiency and safety of the production of
radioisotopes; and</li>
<li style="text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Mass-separation
for enriched stable isotopes and high specific
activity radioactive isotopes</li>
</ul>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">Merit Review Criteria</p>
<p style="margin: 0px;">` Scientific
and/or Technical Merit of the Project;</p>
<ul>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>What
is the scientific innovation of proposed research?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>What
is the likelihood of achieving valuable results?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>How
might the results of the proposed work impact the
direction, progress, and thinking in relevant
scientific fields of research?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>How
does the proposed work compare with other efforts in
its field, both in terms of scientific and/or
technical merit and originality?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Is
the Data Management Plan suitable for the proposed
research and to what extent does it support the
validation of research results?</li>
</ul>
<p style="margin: 0px;"> </p>
<p style="text-indent: 0.5in; margin: 0px;">Appropriateness
of the Proposed Method or Approach;</p>
<ul>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>How
logical and feasible are the research approaches?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Does
the proposed research employ innovative concepts or
methods?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Are
the conceptual framework, methods, and analyses well
justified, adequately developed, and likely to lead
to scientifically valid conclusions?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Does
the applicant recognize significant potential
problems and consider alternative strategies?</li>
</ul>
<p style="margin: 0px;"> </p>
<p style="text-indent: 0.5in; margin: 0px;">Competency
of Applicant’s Personnel and Adequacy of Proposed
Resources</p>
<ul>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>What
is the past performance and potential of the
Principal Investigator (PI)?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>How
well qualified is the research team to carry out the
proposed research?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Are
the research environment and facilities adequate for
performing the research?</li>
<li style="margin-left: .75in; text-indent: -.25in;"><span
style="font-family: Symbol;"><span style="font:
7.0pt 'Times New Roman';"> </span></span>Does
the proposed work take advantage of unique
facilities and capabilities?</li>
</ul>
<p style="text-indent: 0.5in; margin: 0px;"> </p>
<p style="text-indent: 0.5in; margin: 0px;"><br>
</p>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre>_______________________________________________
Isotope-prod mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:Isotope-prod@jlab.org" target="_blank">Isotope-prod@jlab.org</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/isotope-prod" target="_blank">https://mailman.jlab.org/mailman/listinfo/isotope-prod</a>
</pre>
</blockquote>
<p><br>
</p>
<br>
_______________________________________________<br>
Isotope-prod mailing list<br>
<a class="moz-txt-link-abbreviated" href="mailto:Isotope-prod@jlab.org">Isotope-prod@jlab.org</a><br>
<a class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/isotope-prod">https://mailman.jlab.org/mailman/listinfo/isotope-prod</a><br>
</div>
</div>
</blockquote>
<br>
</body>
</html>