7-11 July 2014
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=16&confId=34"><font color=#0000ff>SAIP2014 Proceedings published on 17 April 2015</font></a>

Study of the Isovector Giant Dipole Resonance across the neodymium and samarium isotope chains from spherical to deformed nuclei using (p,p') scattering at 200 MeV

9 Jul 2014, 14:00
20m
D Les 101

D Les 101

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

Speaker

Ms Lindsay Donaldson (University of the Witwatersrand)

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

Prof. John Carter
john.carter@wits.ac.za
University of the Witwatersrand

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

PhD

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

Yes

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>

Fine structure in the energy region of the Isovector Giant Dipole Resonance (IVGDR) from spherical to deformed neodymium isotopes (142, 144, 146, 148, 150Nd) has been observed in high energy-resolution proton inelastic scattering experiments for Ep = 200 MeV at zero degrees using the K600 magnetic spectrometer of iThemba LABS. This investigation is being extended to include the samarium isotope chain. The analysis of the (p,pʹ) scattering data on both the neodymium and samarium isotope chains will yield insight into the transition from spherical to deformed nuclei and provide information about the dominant damping mechanisms. For nuclei with 88 < N < 92, a detailed study of the IVGDR is of specific interest since this is the nuclear region in which a transition from spherical to permanently deformed nuclei occurs. As such, comparisons between 148Nd and 150Sm as well as between 150Nd and 152Sm, which are isotones in the transitional region, will provide further insight into the nature of the transition region itself and will allow for an investigation into the change in characteristic energy scales in the region where the onset of deformation is seen. Double differential cross-sections have been obtained for the neodymium isotope chain, paying particular attention to the reliability of the instrumental background subtraction. A comparison to photo-absorption data has been made and a preliminary wavelet analysis has been completed. These results will be presented, along with some theoretical aspects with respect to the comparison between neodymium and samarium isotopes.

Primary author

Ms Lindsay Donaldson (University of the Witwatersrand)

Co-authors

Prof. A Richter (Institut fur Kernphysik, Technische Universitat Darmstadt) Prof. A Tamii (Research Center for Nuclear Physics, Osaka University) Mr Chamunorwa Oscar Kureba (School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa) Dr Deon Steyn (iThemba LABS) Prof. ELIAS SIDERAS-HADDAD (University of the Witwatersrand) Mr Fhumulani Nemulodi (University of Cape Town) Dr Frederick David Smit (iThemba LABS) Prof. G. R. J. Cooper (University of the Witwatersrand) Dr Hiro Fujita (Research Center for Nuclear Physics, Osaka University) Dr Iyabo Usman (University of the Witwatersrand, Johannesburg.) Mr Jacobus Swartz (Stellenbosch University) Dr Joele Mira (iThemba LABS) Prof. John Carter (University of the Witwatersrand) Mr MAXWELL JINGO (UNIVERSITY OF THE WITWATERSRAND) Prof. P Von Neumann-Cosel (Institut fur Kernphysik, Technische Universitat Darmstadt) Dr Paul Papka (Stellenbosch University) Dr Retief Neveling (iThemba LABS) Prof. Roger Fearick (University of Cape Town) Dr Siegfried Förtsch (iThemba LABS) Prof. Y Fujita (Department of Physics, Osaka University) Dr Zinhle Buthelezi (iThemba LABS)

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