Jacob Adetunji

Biography

I retired from the University as a full time staff member in Geosciences, Department of Natural Sciences. However, I am continuing with research in collaboration with Professor Hugh Rollinson and am also teaching as an Associate Lecturer.    BSc (Physics and Pure Mathematics) University of Ghana, Legon, Accra.   MSc (Opto-electronics) University of Essex   PhD (Materials Physics) University of Essex   The Institute of Acoustics (London) Certificate in Environmental Noise Measurement      

Research Interest

Over the years, my research activities have spanned TEM studies of Ar-ion channelling and sputtering behaviour of single crystal carbonates, as well as pseudo-potential defect centre calculations in alkali-halides. Later my attention was focused on the use of the Fe-Mössbauer technique in the characterisation of iron-bearing natural and synthetic minerals. Fortunately, Fe, which is a typical Mössbauer element, is one of the major constituents of the earth’s crust (5%) and commonly found in rocks, soils and sediments. Iron exists in various oxidation states which can be characterised by the Mössbauer spectroscopic technique, and its 14.4keV gamma radiation source can serve as a probe for monitoring chemical changes occurring in the atomic environment, elucidating their mechanisms.