4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
Paper Review: Initial screening in progress
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Fine structure of the Isoscalar Giant Monopole Resonance in 208Pb, 90Zr, 58Ni and 40Ca using medium energy Alpha-particle Scattering at Zero Degree

Presented by Mr. Nolan BOTHA on 5 Jul 2016 from 16:10 to 18:00
Type: Poster Presentation
Track: Track B - Nuclear, Particle and Radiation Physics
Board #: B.418

Abstract

A systematic experimental investigation was performed of the phenomenon associated with the fine structure of giant resonances, with emphasis on the Isoscalar Giant Monopole Resonance (ISGMR), for <sup>208</sup>Pb, <sup>90</sup>Zr, <sup>58</sup>Ni and <sup>40</sup>Ca using a 200 MeV alpha-particle beam delivered by the Separated Sector Cyclotron of iThemba LABS. These nuclei are of special interest since they are doubly-magic, <sup>208</sup>Pb and <sup>40</sup>Ca, and proton-magic, <sup>90</sup>Zr and <sup>58</sup>Ni. Measurements were made using the state-of-the-art K = 600 magnetic spectrometer to obtain unique high energy-resolution alpha-particle inelastic scattering excitation-energy spectra in the region of ISGMR at θlab = 0&deg; where the cross-section of the ISGMR is at a maximum. In addition, measurements were also made for all four target nuclei at θlab = 4&deg;, where the cross-section of the Isoscalar Giant Quadrupole Resonance (ISGQR) is at a maximum. This was done in order to subtract the contribution of the ISGQR from the excitation energy spectra taken at zero degrees. Preliminary results are presented.

Award

No

Level

PhD

Supervisor

Dr IT Usman, Iyabo.Usman@wits.ac.za School of Physics, University of the Witwatersrand

Paper

No

Permission

Yes

Place

Location: Kramer Law building
Address: UCT Middle Campus Cape Town
Room:


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