4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=10&confId=86">The Proceedings of SAIP2016</a> published on 24 December 2017

Fine structure of the Isoscalar Giant Monopole Resonance in <sup>208</sup>Pb, <sup>90</sup>Zr, <sup>58</sup>Ni and <sup>40</sup>Ca using medium energy Alpha-particle Scattering at Zero Degree

5 Jul 2016, 16:10
1h 50m
Kramer Law building

Kramer Law building

UCT Middle Campus Cape Town
Board: B.418
Poster Presentation Track B - Nuclear, Particle and Radiation Physics Poster Session (1)

Speaker

Mr Nolan Botha (University of the Witwatersrand)

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

PhD

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

Yes

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)?

No

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 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 208Pb, 90Zr, 58Ni and 40Ca 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, 208Pb and 40Ca, and proton-magic, 90Zr and 58Ni. 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° 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°, 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.

Main supervisor (name and email)<br>and his / her institution

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

Primary author

Mr Nolan Botha (University of the Witwatersrand)

Co-authors

Dr Frederick David Smit (iThemba LABS) Dr Iyabo Usman (University of the Witwatersrand, Johannesburg.) Prof. John Carter (University of the Witwatersrand) Dr Retief Neveling (iThemba LABS)

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