Browsing by Author "Kamil, Mohamed"

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    Aspects relevant for nucleosynthesis in novae and 136Xe neutrinoless double beta decay, probed via 32S(d; t) and 137Ba(3He; ) reactions
    (University of the Western Cape, 2025) Kamil, Mohamed
    This work uses two independent neutron removal reactions to investigate nuclear states relevant for two contexts: the 30P(p; )31S resonance reaction, which plays a crucial role in nucleosynthesis pathways in novae, and the neutrinoless double beta decay (0 ) of 136Xe ! 136Ba. To achieve these objectives, high-resolution measurements using the 32S(d; t) and the 137Ba(3He; ) reactions were employed to probe excitation energies of interest in 31S and 136Ba, respectively. Both experiments were performed using the Q3D spectrograph at the Maier-Leibnitz Laboratory (MLL) in Garching, Germany. A rigorous statistical analysis of the 32S(d; t) data was used to resolve a discrepancy concerning the existence of an astrophysically relevant state in 31S at around 6.4 MeV. The analysis of the second dataset provided valuable spectroscopic information to test calculated matrix elements for 136Xe 0 .
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    Spectroscopy of proton unbound states in 32Cl
    (University of the Western Cape, 2019) Kamil, Mohamed; Triambak, Smarajit
    This project aimed to investigate proton unbound states in 32Cl using the 32S(3He; t) charge-exchange reaction. This research is relevant both in the context of nuclear structure and astrophysics. Excited states in 32Cl up to Ex 6 MeV were produced using a 50 MeV 3He++ beam from the K200 separated sector cyclotron at iThemba LABS. The triton ejectiles were mass analysed and detected at the focal plane of the K600 magnetic spectrometer. An additional segmented silicon detector array called CAKE was used to detect the unbound protons from states in 32Cl in conjunction with the tritons. In this work we looked for potential sources of isospin admixture that could explain the apparent violation of the Isobaric Multiplet Mass Equation (IMME) for the A = 32, T = 2 quintet. We also investigated the possibility of determining the 31S(p; ) reaction rate indirectly, via measurements of the partial proton widths of unbound states in 32Cl.