Abstract
The
50
Cr(p,
γ
)
51
Mn proton capture reaction has been used to study the photon strength functions by utilizing primary gamma ray transitions from the entry states to discrete states of ...known spins and parities. The reaction was conducted with the 3 MV Tandetron accelerator at iThemba LABS which delivered proton beams of 2.5 to 2.740, 2.760 to 3.0 MeV and 3.675 to 4.498 MeV in intervals of 20-25 keV with beam currents of up to 5
μ
A. In this work the proton capture reaction was employed together with the Average Resonance Capture method to extract the shape of the PSF of
51
Mn.
The pygmy dipole resonance (PDR) thus far has been described microscopically as a cluster of 1− states around the neutron separation energy (Sn). This study is an attempt to probe the nature of the ...PDR, specifically the single-particle or collective character of these states. One-step transfer reactions represents a good probe for this study due to their selectivity in exciting single-particle states. The 97Mo(p,d) 96Mo and 95Mo(d,p)96Mo reactions, were used to populate the nucleus of interest. The experiment was conducted at the INFN-LNS facility in Catania, Italy. The ejectiles were momentum-analysed by the MAGNEX spectrometer and detected by its focal-plane detector. In this paper, preliminary results for the 97Mo(p, d) 96Mo reaction will be presented.
With its unique combination of excellent timing properties and good energy resolution, LaBr3:Ce detectors have proven to be effective tool in gamma spectroscopy and in particular fast-timing studies. ...Eight 2” x 2” LaBr3:Ce detectors used in conjunction with the 16 channel all-digital waveform 500 MHz acquisition module, PIXIE-16 were commissioned at iThemba Laboratory for Accelerator Based Sciences, South Africa. The results presented here give insight of the performance of the 2” x 2” LaBr3 detectors when used in conjunction with a digital pulse processing (DPP) module and electronic read-out module. Initial commissioning experiments were done using radioactive sources, including 60Co, 152Eu and 67Ga. The detectors were then exposed to an in-beam environment using the AFRODITE array with targets 45Sc and 64Ni, with a proton beam energy of 27 MeV.
Abstract
The pygmy dipole resonance (PDR) thus far has been described microscopically as a cluster of 1
−
states around the neutron separation energy (S
n
). This study is an attempt to probe the ...nature of the PDR, specifically the single-particle or collective character of these states. One-step transfer reactions represents a good probe for this study due to their selectivity in exciting single-particle states. The
97
Mo(p,d)
96
Mo and
95
Mo(d,p)
96
Mo reactions, were used to populate the nucleus of interest. The experiment was conducted at the INFN-LNS facility in Catania, Italy. The ejectiles were momentum-analysed by the MAGNEX spectrometer and detected by its focal-plane detector. In this paper, preliminary results for the
97
Mo(p, d)
96
Mo reaction will be presented.
Photo-nuclear reactions of light nuclei below a mass of $A=60$ are studied
experimentally and theoretically by the PANDORA (Photo-Absorption of Nuclei and
Decay Observation for Reactions in ...Astrophysics) project. Two experimental
methods, virtual-photon excitation by proton scattering and real-photo
absorption by a high-brilliance gamma-ray beam produced by laser Compton
scattering, will be applied to measure the photo-absorption cross sections and
the decay branching ratio of each decay channel as a function of the photon
energy. Several nuclear models, e.g. anti-symmetrized molecular dynamics,
mean-field type models, a large-scale shell model, and ab initio models, will
be employed to predict the photo-nuclear reactions. The uncertainty in the
model predictions will be evaluated from the discrepancies between the model
predictions and the experimental data. The data and the predictions will be
implemented in a general reaction calculation code TALYS . The results will be
applied to the simulation of the photo-disintegration process of
ultra-high-energy cosmic rays in inter-galactic propagation.
Photo-nuclear reactions of light nuclei below a mass of \(A=60\) are studied experimentally and theoretically by the PANDORA (Photo-Absorption of Nuclei and Decay Observation for Reactions in ...Astrophysics) project. Two experimental methods, virtual-photon excitation by proton scattering and real-photo absorption by a high-brilliance gamma-ray beam produced by laser Compton scattering, will be applied to measure the photo-absorption cross sections and the decay branching ratio of each decay channel as a function of the photon energy. Several nuclear models, e.g. anti-symmetrized molecular dynamics, mean-field type models, a large-scale shell model, and ab initio models, will be employed to predict the photo-nuclear reactions. The uncertainty in the model predictions will be evaluated from the discrepancies between the model predictions and the experimental data. The data and the predictions will be implemented in a general reaction calculation code TALYS . The results will be applied to the simulation of the photo-disintegration process of ultra-high-energy cosmic rays in inter-galactic propagation.
Introduction:Spinal Cord Injury is one of the most devastating conditions affecting a person's physical, psychological, and social well-being. The World Health Organisation estimates that the annual ...global incidences of spinal cord injuries rose from 40 to 80 cases per million people. Furthermore, in South Africa, the number of people affected by spinal cord injury is approximately 12.3 per 100 000 people. Within the rehabilitation centres the registered nurses are actively involved in caring for spinal cord injury patients throughout the patient’s lifetime while admitted to the rehabilitation units. Although many studies have been conducted on spinal cord injury, there is limited studies relating to the views of the registered nurses towards the care of patient in rehabilitation.Aims:The aim of the study is to explore and describe the views of registered nurses caring for patients with spinal cord injuries at a private rehabilitation hospital in the Gauteng Province.Research design and methods:The study used a descriptive, exploratory, and contextual design, qualitative approach and research method. Semi-structured face-to-face interviews were used to collect data from the 12 registered nurses caring for patients with spinal cord injuries at a rehabilitation hospital in the Gauteng Province. The data was analysed following the 8 steps of Tesch data analysis method. Measures to ensure trustworthiness were ensured throughout the study.Results:Upon analysis of the data, the following five (5) themes emerged, namely 1. Nurse’s views on the care for spinal cord injury patients, 2. Nurses' challenges when caring for spinal cord injury patients, 3. Challenges faced by spinal cord injury patients, 4. Nurses competencies to care for spinal cord injury patients and 5. Nurses recommendations when caring for spinal cord injury patients.Conclusion:The findings of the study concluded that the objectives had been attained. The registered nurses view their care for spinal cord injury patients as being multifaceted. The care includes preventing pressure sore, slips and falls, promoting bladder and bowel management, some patients are reluctant to participate in the rehabilitation programme, patient financial challenges, family training, patient institutional hospitalization, a home visit by the social worker, community support and considering more registered nurse in a rehabilitation unit. Lastly, the researcher has made recommendations to improve the care of spinal cord injury patients at private rehabilitation.
Photonuclear reactions of light nuclei below a mass of
A
=
60
are planned to be studied experimentally and theoretically with the PANDORA (Photo-Absorption of Nuclei and Decay Observation for ...Reactions in Astrophysics) project. Two experimental methods, virtual photon excitation by proton scattering and real photo absorption by a high-brilliance
γ
-ray beam produced by laser Compton scattering, will be applied to measure the photoabsorption cross sections and decay branching ratio of each decay channel as a function of the photon energy. Several nuclear models, e.g. anti-symmetrized molecular dynamics, mean-field and beyond-mean-field models, a large-scale shell model, and ab initio models, will be employed to predict the photonuclear reactions. The uncertainty in the model predictions will be evaluated based on the discrepancies between the model predictions and experimental data. The data and predictions will be implemented in the general reaction calculation code, TALYS. The results will be applied to the simulation of the photo-disintegration process of ultra-high-energy cosmic rays in inter-galactic propagation.
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