Experimental Solid State Physics

Luminescence Research Laboratory

Research projects
The general theme of our research is the study of point-defects in insulating materials using luminescence methods.  Our current interest concerns the use of time-resolved optical stimulation (TR-OSL) to study dynamics of luminescence processes in quartz and the ultra-sensitive dosimeter, a-Al2O3:C.     We also have projects using thermoluminescence to study luminescence properties of quartz, a-Al2O3:C, ultra-high molecular weight polyethylene and various materials of interest in phosphor research.


Equipment in use

  •  RISØ TL/OSL DA-20 Luminescence Reader
  • Blue (470 nm) LED Time-resolved Luminescence Spectrometer
  • Green (525 nm) LED Time-resolved Luminescence Spectrometer 


Staff Members of Group
M L Chithambo
S Nsengiyumva


Collaborators

  • Professor Vasilis Pagonis, McDaniel College, USA
    • Research on experimental and modelling studies of time-resolved luminescence processes in quartz on TR-OSL phenomena in quartz and aluminum oxide
  • Dr Folorunso Ogundare, University of Ibadan, Nigeria
    • Collaborative research on experimental and theoretical studies of thermoluminescence and time-resolved luminescence processes in quartz and other geological materials.
  • Prof Jim Feathers, University of Washington, Seattle, USA
    • Development of time-resolved luminescence methods for use in retrospective dosimetry. 
  • Prof Marco Martini, Dr Mauro Fasoli, Università di Milano-Bicocca, Milano, Italy
    • Complementary studies of luminescence dynamics in quartz using time-resolved optical stimulation and radioluminescence methods
  • Prof Karl Ramseyer, University Bern, Bern, Switzerland
    • Research on luminescence lifetimes in low and high-sensitivity natural quartz

Visitors

  • Mr Luyanda Noto-Male and Ms Puseletso Mokoena, University of the Free State, Bloemfontein, November 2012
  • Prof F Dejene, Mr A Wako and  Mr L F Koad, University of the Free State, Qwa-Qwa campus, April 2013

Funding
We acknowledge with gratitude funding from various sources including the following:
Rhodes University
The National Research Foundation
The Royal Society (UK)
The Third World Academy of Sciences
The Claude Leon Foundation

 

Last Modified: Thu, 08 Nov 2018 08:55:39 SAST