SAIP2015

Second-order Coulomb excitation effects from the GDR

30 Jun 2015, 11:30

20m

Oral Presentation Track B - Nuclear, Particle and Radiation Physics NPRP

Speaker

Prof. Nico Orce (University of the Western Cape)

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

A new empirical formula for the (-2) moment of the photo-absorption cross section, sigma-2, has been determined from the 1988 compilation of Dietrich and Berman. A new fit to the data yields a new empirical formula which is in better agreement with Migdal's original calculation,
and approximately yields a 30% decrease in the polarization potential generated by virtual electric-dipole excitations of states around the giant dipole resonance. The effect of a mass-dependent symmetry energy provides an explanation for deviations from the hydrodynamic model.

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

No

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

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Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes