Speaker
Mr
Gaogalalwe Mokgatitswane
(Botswana International University of Science and Technology)
Description
We report on the optical and structural properties of plastic scintillators irradiated with a neutron beam produced by the IBR-2 reactor of the Frank Laboratory of Neutron Physics in JINR, Dubna. Blue and green shifting Ukraine polystyrene-based scintillators UPS 923A were irradiated with neutron fluence ranging from 3 x 10^(13) to 1.7 x 10^(16) n/cm^2 and neutron energy E > 1 MeV. Discolouring in the plastic scintillators was observed after irradiation. The effects of radiation damage on the optical and structural properties of the samples were characterized by conducting light yield, light transmission, light fluorescence and Raman spectroscopy studies. According to the results obtained, neutron radiation does influence damage in the material. The disappearance of the Raman peak features in green emitters at 1165.8, 1574.7 and 1651.2 cm^(-1) revealed significant structural alteration due to neutron bombardment. We observed a loss in the fluoroscence intensity, light yield and light transmission in the plastics.
Supervisor details<br><b>If not a student, type N/A.</b><br>Student abstract submision<br>requires supervisor permission:<br>please give their name,<br> institution and email address.
Dr Chamunorwa Oscar Kureba
Department of Physics and Astronomy, Botswana International University of Science and Technology, Private Bag 16, Palapye, Botswana
kurebac@biust.ac.bw
| Please confirm that you<br>have carefully read the<br>abstract submission instructions<br>under the menu item<br>"Call for Abstracts"<br><b>(Yes / No)</b> | yes |
|---|---|
| Consideration for<br>student awards<br><b>Choose one option<br>from those below.</b><br>N/A<br>Hons<br>MSc<br>PhD | MSc |
Primary authors
Prof.
Bruce Mellado
(University of the Witwatersrand)
Dr
Chamunorwa Oscar Kureba
(Botswana International University of Science and Technology)
Prof.
ELIAS SIDERAS-HADDAD
(University of the Witwatersrand)
Mr
Gaogalalwe Mokgatitswane
(Botswana International University of Science and Technology)
Ms
Joyful Elma Mdhluli
(University of the Witwatersrand)
Dr
Rudolph Erasmus
(University of the Witwatersrand)
Mr
Vladimir Baranov
(Joint Institute for Nuclear Research, Dubna, Russia)
Yuri Davydov
(Joint Institute for Nuclear Research, Dubna, Russia)
