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8-12 July 2013
Africa/Johannesburg timezone
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Quasi-free nucleon knockout contribution in 40Ca(p,p') inclusive scattering at 200 MeV

10 Jul 2013, 14:50
20m
Oral Presentation Track B - Nuclear, Particle and Radiation Physics NPRP

Speaker

Dr Iyabo Usman (University of the Witwatersrand, Johannesburg.)

Abstract content <br> &nbsp; (Max 300 words)

The Distorted Wave Impulse Approximation (DWIA) has been used to measure the extent of contributions due to quasi-free proton and neutron knockout in inclusive inelastic proton-scattering reactions from 40Ca(p,2p)39K and 40Ca(p,pn)39Ca. Such reactions contribute to the underlying background in the continuum of the Isoscalar Giant Quadrupole Resonance (ISGQR) region. In the DWIA, the three-body cross-section for a reaction is considered with final relative nucleon-nucleon energy prescription (FEP) in the evaluation of cross sections. Three distorted waves are generated using different optical potentials for different channels involved. The two-body cross-section is then evaluated using on-shell amplitude interpolated from phase shifts for projectile-ejectile scattering. Quantitative description of proton and neutron contributions and the influence on the ISGQR will be discussed.

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Primary author

Dr Iyabo Usman (University of the Witwatersrand, Johannesburg.)

Co-authors

Prof. Achim Richter (Technische Universitaet Darmstadt, Germany) Prof. Elias Sideras-Haddad (University of the Witwatersrand, Johannesburg) Dr Fredrick Smit (iThemba LABS, Somerset West) Prof. Gordon Cooper (University of the Witwatersrand, Johannesburg.) Dr Hirohiko Fujita (Research Center for Nuclear Physics, Osaka University, Ibaraki, Japan) Prof. John Carter (University of the Witwatersrand, Johannesburg.) Ms Lindsay Donaldson (University of the Witwatersrand, Johannesburg) Mr Maxwel Jingo (University of the Witwatersrand, Johannesburg) Mr Mouftahou Latif (University of the Witwatersrand, Johannesburg) Mr Oscar Kureba (University of the Witwatersrand, Johannesburg) Prof. Paul Papka (Stellenbosch University) Prof. Peter von Neumann-Cosel (Technische Universitaet Darmstadt, Germany) Dr Retief Neveling (iThemba LABS, Somerset West) Prof. Roger Fearick (University of Cape Town, Rondebosch) Dr Siegie Fortsch (iThemba LABS, Somerset West) Prof. Yoshitaka Fujita (Research Center for Nuclear Physics, Osaka University, Ibaraki, Japan) Dr Zinhle Buthelezi (iThemba LABS, Somerset West)

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