Skip to ContentSkip to Navigation
About us Latest news News News articles

PhD Ceremony Peane Maleka

07 May 2010

On 7 May Peane Maleka will defend his thesis 'An assessment of gamma-ray and neutron spectra of in-situ element analysis using a pulsed-neutron source'.

Location: Academy Building, Broerstraat 5, Groningen

Time: 11:00 hrs.

Promotor: R.J. de Meijer

An assessment of gamma-ray and neutron spectra of in-situ element analysis using a pulsed-neutron source

The work of this thesis is based on a project in the framework of the EU programme GROWTH, to develop a multi-purpose instrumentation, NuPulse, capable to explore elemental concentrations for in situ measurements using a pulsed neutron source based on a Deuterium-Tritium reaction. NuPulse provides time- and energy-information generated by neutron interactions with geological formations. The work of this thesis mainly represents the contribution of the RUG/KVI team to the NuPulse consortium. Our tasks included design and construction of control units, data modelling, validation and interpretation of laboratory and field measurements.

At first, benchmark experiments were combined with Monte Carlo (MC) simulations, leading to the instrument’s design. Next, the instrument was tested and calibrated under well-defined laboratory conditions before deployment in field experiments. These experimental tests have shown on one hand the working and capabilities of the instrument but on the other hand showed unexpectedly, new challenges regarding the data interpretation via MC simulations.

The objectives of the NuPulse programme were maybe too ambitious because of unforeseen difficulties in the Monte Carlo simulations. The NuPulse instrument could not yet fulfil all the objectives, nevertheless some promising results were obtained with the instrument and further test will be needed to optimise the various components for the anticipated multi-purpose function. The instrument still requires some physics research before it could be adopted for deployment in mineral exploration, contraband detection and searching for explosives.

Peane Maleka (South-Africa, 1974) studied Physics at the University of the Western Cape. His PhD research was financed by the EU. Presently Maleka works at iThemba LABS (South-Africa).

Last modified:25 January 2019 11.14 a.m.
printView this page in: Nederlands

More news

  • 12 May 2022

    KNAW appoints two UG professors as members

    The Royal Netherlands Academy of Arts and Sciences (KNAW) has appointed Professor Maria Loi and Professor Dirk Slotboom from the Faculty of Science and Engineering as members of the Academy.

  • 15 March 2022

    Vici grants for three UG researchers

    The Dutch Research Council (NWO) has awarded three Vici grants, worth €1.5 million each, to three UG researchers. Prof. J.W Romeijn, Prof. S. Hoekstra, Prof. K.I. Caputi can use this money to develop an innovative line of research and to set up...

  • 20 December 2021

    Enthusiastic convert preaches sustainable business

    Reaching out to sustainable business owners is what Gjalt de Jong is all about. He sees the University as a director of innovation. An independent arbiter who can expedite the shift to a circular economy. To this end, he first needed to change...