Evolution of the IVGDR and its fine structure from doubly-magic 40 Ca to neutron-rich 48 Ca probed using (p, p 0 ) scattering

M. B. Latif, I. T. Usman, J. Carter, E. Sideras-Haddad, L. M. Donaldson, M. Jingo, C. O. Kureba, L. Pellegri, R. Neveling, F. D. Smit, F. Nemulodi, P. von Neumann-Cosel, Y. Yu Ponomarev, P. Papka, J. A. Swartz, G. R.J. Cooper, H. Fujita, P. Papakonstantinou, E. Litvinova

Research output: Contribution to journalArticle

Abstract

Experiments investigating the fine structure of the Isovector Giant Dipole Resonances (IVGDR) have been carried out on target nuclei 40,42,44,48 Ca with 200 MeV proton inelastic scattering reactions using the high-energy resolution capability and the zero-degree set-up at the K600 magnetic spectrometer of the iThemba LABS, Cape Town, South Africa. Quasi-free scattering background contributions in the experimental data have been removed by applying a novel method of Discrete Wavelet Transform (DWT) analysis. Energy scales extracted are compared with the state-of-the-art theoretical calculations within the framework of the Quasiparticle-RPA and Relativistic Quasiparticle Time Blocking Approximation (RQTBA). For 40,48 Ca, these calculations consider all major processes (Landau damping, escape width, spreading width) contributing to the damping of the IVGDR.

Original languageEnglish
Pages (from-to)461-468
Number of pages8
JournalActa Physica Polonica B
Volume50
Issue number3
DOIs
Publication statusPublished - Mar 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Latif, M. B., Usman, I. T., Carter, J., Sideras-Haddad, E., Donaldson, L. M., Jingo, M., Kureba, C. O., Pellegri, L., Neveling, R., Smit, F. D., Nemulodi, F., von Neumann-Cosel, P., Ponomarev, Y. Y., Papka, P., Swartz, J. A., Cooper, G. R. J., Fujita, H., Papakonstantinou, P., & Litvinova, E. (2019). Evolution of the IVGDR and its fine structure from doubly-magic 40 Ca to neutron-rich 48 Ca probed using (p, p 0 ) scattering. Acta Physica Polonica B, 50(3), 461-468. https://doi.org/10.5506/APhysPolB.50.461