28 June 2015 to 3 July 2015
Africa/Johannesburg timezone
SAIP2015 Proceeding published on 17 July 2016

Fine structure of the isovector Giant Dipole Resonance in neutron-rich calcium isotopes using the (p,p') reaction at 200 MeV

3 Jul 2015, 11:10
20m
Oral Presentation Track B - Nuclear, Particle and Radiation Physics NPRP

Speaker

Mr Mouftahou Latif (University of the Witwatersrand, Johannesburg 2050)

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>

Proton inelastic-scattering experiments have been carried out on the neutron-rich isotopes of calcium, 42,44,48Ca at zero-degrees using the high-energy resolution K600 Magnetic Spectrometer of iThemba LABS with a view to investigating the fine structure in the region of the Isovector Giant Dipole Resonance (IVGDR). Excellent energy resolutions were achieved with ∆E(FWHM)≈ 30 KeV for 44Ca and ∆E(FWHM)≈ 40 KeV for 42,48Ca leading to clear observation of fine structure thus allowing for an understanding of the damping of the resonance by comparison with state-of-the-art microscopic theoretical calculations. Double differential cross-sections have been extracted from the data obtained for each of the isotopes. Equivalent photo-absorption cross-sections were obtained from the measured data using virtual-photon production rates which agree well with those photo-absorption cross-sections already reported in the literature. In addition, preliminary results of the extracted characteristic energy scales are presented and future prospects are discussed.

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)

No

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

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

Iyabo Usman (Iyabo.Usman@wits.ac.za

Primary author

Mr Mouftahou Latif (University of the Witwatersrand, Johannesburg 2050)

Co-authors

Dr Chamunorwa Oscar Kureba (School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa) Prof. ELIAS SIDERAS-HADDAD (University of the Witwatersrand) Dr Frederick David Smit (iThemba LABS) Dr Iyabo Usman (University of the Witwatersrand, Johannesburg.) Mr Jacobus Swartz (Stellenbosch University) Prof. John Carter (University of the Witwatersrand) Ms Lindsay Donaldson (University of the Witwatersrand) Mr MAXWELL JINGO (UNIVERSITY OF THE WITWATERSRAND) Dr Paul Papka (Stellenbosch University) Prof. Peter von-Neumann Cosel (Institut für kernphysik Technische Universitat, Darmstadt D-64289, Germany) Dr Retief Neveling (iThemba LABS) Dr Vladimir Ponomarev (Institut für kernphysik Technische Universitat, Darmstadt D-64289, Germany) Dr fhumulani nemulodi (iThemba LABS)

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