Conveners
Session 4: Nuclear Structure, Reactions and Dynamics
- Retief Neveling (iThemba LABS)
Recent observations of peak structures in the excitation spectra of the four-neutron system have brought new attention to multineutron systems from both experimental and theoretical perspectives. A key challenge lies in identifying the mechanisms behind these peaks and exploring systematics as neutron number changes. Addressing these issues is important for deepening our grasp of neutron-rich...
The strength distributions of Isoscalar Giant Resonances have been investigated via inelastic alpha- particle scattering on $^{142,146–150}$Nd and $^{172}$Yb. All nuclei, except $^{142}$Nd, exhibit deformed characteristics, with $^{172}$Yb having the largest deformation with its quadrupole deformation parameter exceeds 0.3. The Isoscalar Giant Monopole Resonance (ISGMR) strength distributions...
It has been established that inelastic alpha scattering at a few hundred MeV, particularly at very forward scattering angles including $0^\circ$, is effective for probing the Isoscalar Giant Monopole Resonance (ISGMR) strength distribution ($E_0$) in atomic nuclei. Two previous studies on the evolution of the ISGMR in the even-even $^{40,42,44,48}$Ca isotopes were conducted at two different...
We are constructing a cross-section calibration standard for photo-neutron reactions, by obtaining high-precision ($\gamma$,1n) and ($\gamma$,2n) cross sections. Photo-absorption reactions are when a nucleus absorbs electromagnetic radiation of energies around 10-20 MeV, exciting the isovector giant dipole resonance (GDR) response in the nucleus. Most heavy nuclei decay by emitting neutrons...
