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<p class="MsoNormal"><span style="font-size:14.0pt">There will be a Modern Optics and Spectroscopy Seminar held next
<b>Tuesday, May 1 at 12pm </b>in <b>34-401</b></span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt">Professor Stephen R. Leone</span></b><o:p></o:p></p>
<p class="MsoNormal"><i><span style="font-size:14.0pt">Departments of Chemistry & Physics
</span></i><i><span lang="DA" style="font-size:14.0pt"><br>
</span></i><i><span style="font-size:14.0pt">Lawrence Berkeley National Laboratory<br>
</span></i><i><span lang="DA" style="font-size:14.0pt">University of California, Berkeley</span></i><i><span style="font-size:14.0pt">
</span></i><i><span style="font-size:14.0pt"> <o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:14.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><b><i><span lang="DA" style="font-size:14.0pt">”Attosecond Dynamics: From Molecules to Semiconductor Solids</span></i></b><b><i><span style="font-size:14.0pt">”
<o:p></o:p></span></i></b></p>
<p class="MsoNormal"><b><i><span style="font-size:14.0pt"> </span></i></b><o:p></o:p></p>
<p class="MsoNormal"><i><span style="font-size:14.0pt">X-ray transitions accessed by attosecond pulses are responsive to charge, chemical oxidation state, and electronic environment, and they exhibit sensitive shifts even with vibrational excitation. An introduction
to femtosecond and attosecond x-ray measurements is presented, with a basic goal to reveal new dynamical timescales and processes in molecule and solids. Investigations involve the development of methods to explore passage through conical intersections, carbon-molecule
ring opening, singlet-to-triplet transitions, the response of semiconductors to the excitation of carriers, and core-level excitons in single layers of metal dichalcogenides.</span></i><span style="font-size:11.0pt"><br>
<br>
</span><i><span style="font-size:14.0pt"><o:p></o:p></span></i></p>
<p class="MsoNormal">Refreshments will be served immediately following the seminar<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">Christine Brooks</span></b><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Administrative Assistant</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Massachusetts Institute of Technology</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Department of Chemistry</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">77 Massachusetts Ave, 6-333</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Cambridge, MA 02139</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">p: 617.253.7239</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">e: <a href="mailto:cbrooks@mit.edu">cbrooks@mit.edu</a></span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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