Study of low-lying proton unbound states in 24Al using the 24Mg(3He; t)24Al reaction.
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Date
2022
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of the Western Cape
Abstract
This MSc project entails a study of astrophysically relevant states in 24Al,
that are important for a better understanding of the 23Mg(p,
)24Al nuclear
reaction rate in classical novae. This is a crucial breakout reaction that links
the NeNa and MgAl cycles and o ers an understanding of the nucleosynthesis
of elements between Neon and Aluminium. In this work the K = 600 magnetic
spectrometer at iThemba LABS was used together with a silicon detector
array to measure proton branching ratios for the relevant states in 24Al
using the 24Mg(3He,t) charge-exchange reaction. Our experiment yields the
rst direct measurement of the relative proton branching ratios from these
states. We used our measured observables and theoretical estimates of partial
gamma widths of unbound states in 24Al, to indirectly determine the
total 23Mg(p,
) reaction rate at nova temperatures.
Description
>Magister Scientiae - MSc
Keywords
Nuclear reaction, Aluminium, Elements, Magnetic spectrometer