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<b><big><big>Jefferson Lab Colloquium<br>
<br>
Applications of Electron Linacs to Isotope Production</big></big><br>
<br>
D.P. Wells<br>
South Dakota School of Mines and Technology</b><br>
<br>
<b>ABSTRACT</b><br>
The application of accelerators to isotope production has a long
history of successes, primarily with positive ion accelerators.
Electron linacs, in contrast, have played a very limited role in
isotope production. The primary reason behind the limited role of
electron linacs in isotope production lies in the low specific
activity that is readily attainable with bremsstrahlung-based
photo-nuclear reactions. It is important to note, however, that
photo-nuclear reactions, coupled with thick targets, can be used to
produce large quantities of total radioactivity. However, there are
some circumstances, largely unexploited, whereby high specific
activity is achievable with photo-nuclear reactions. This
presentation will report on electron linac-based photo-nuclear
isotope production research, with an emphasis on several isotopes of
interest for research and medicine, including 18F, 64Cu, 67Cu,
99Mo/99Tc, 111In and 131Ba/131Cs. Some of the technical challenges
that photo-nuclear production face are reliable high-power electron
beams (tens of kW at 30 MeV or higher), target cooling, overcoming
radiolytic chemical reactions and high specific activity. In
addition, linacs coupled to subcritical assemblies can produce the
full gamut of reactor-based isotope production. Each of these will
be addressed.<br>
<br>
<b>Wednesday, March 6, 2013<br>
4 p.m.<br>
CEBAF Center auditorium<br>
Cookies & coffee in the CEBAF Center lobby, 3:30 p.m.</b><br>
<br>
--<br>
Regards,<br>
Deb Magaldi<br>
Jefferson Lab<br>
Public Affairs<br>
x5102<br>
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