<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><span style="font-family:arial,sans-serif;font-size:13px">Wednesday November 9th 3:30 in MOB Theory Room</span><br></div><div class="gmail_quote"><div dir="ltr"><div style="font-family:arial,helvetica,sans-serif;font-size:small"><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">This weeks paper:</div><div style="font-family:arial,sans-serif;font-size:13px"><a href="http://www.nature.com/nphys/journal/vaop/ncurrent/full/nphys3916.html" target="_blank">http://www.nature.com/nphys/jo<wbr>urnal/vaop/ncurrent/full/nphys<wbr>3916.html</a></div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Questions for reading:</div><div style="font-family:arial,sans-serif;font-size:13px">1) What is meant by a "bubble nucleus"?</div><div style="font-family:arial,sans-serif;font-size:13px">2) Why is 34Si a good candidate to be a bubble nucleus?</div><div style="font-family:arial,sans-serif;font-size:13px">3) What was the main motivation for this experiment?</div><div style="font-family:arial,sans-serif;font-size:13px">4) How do they determine if the proton knocked out of 34Si had L = 2 or L = 0 and why do they only need to consider these two options?</div><div style="font-family:arial,sans-serif;font-size:13px">5) Why is the measured longitudinal momentum distribution shown in figures 2 b-g asymmetric?</div><div style="font-family:arial,sans-serif;font-size:13px">6) What is the significance of the observed asymmetry between proton and neutron densities?</div><div style="font-family:arial,sans-serif;font-size:13px">7) Why do they conclude that 34Si is doubly magic?</div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">Questions for discussion:</div><div style="font-family:arial,sans-serif;font-size:13px">1) What can we learn by studying bubble nuclei?</div><div style="font-family:arial,sans-serif;font-size:13px">2) Can we trust their extraction of the spectroscopic factors from the experimental cross sections?</div><div style="font-family:arial,sans-serif;font-size:13px">3) Can studying 34Si really answer all of the questions that they say it can? </div><div style="font-family:arial,sans-serif;font-size:13px">4) How do their results place constraints on the nuclear spin-orbit force?</div></div></div>
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