1-8 July 2022
Virtual Conference
Africa/Johannesburg timezone
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Nuclear forensic analysis of natural uranium mined from northern Nigeria.

4 Jul 2022, 12:15
15m
Zoom Platform (Virtual Conference)

Zoom Platform

Virtual Conference

Oral Presentation Track B - Nuclear, Particle and Radiation Physics Nuclear, Particle and Radiation Physics

Speaker

Prof. Iyabo Usman (University of the Witwatersrand, Johannesburg.)

Description

Nuclear forensic science seeks to to aid attribution process of nuclear or radioactive materials found outside regulatory control. It is progressively seen as fundamental part of a strong nuclear security program. Having abundant deposits of uranium ore in Africa portends potential nuclear insecurity thereby the need to generate fingerprints becomes inevitable task. Isotopic ratios such as uranium, lead and thorium concentration, rare-earth elements patterns, trace impurities elements and age were determined. These analyses provide specific information on the origin and production process of uranium bearing materials. This study investigated these fingerprints and their applications in four selected uranium mines from northern parts of Nigeria (Riruwai, Mika-I, Mika-II and Michika), using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) analytical technique. In the results obtained, isotope system of 206Pb/238U, 207Pb/235U chronometry and Pb-Pb isochron as applied to the samples, yielded variable average age range of 29.4±0.009 Ma to 4280 ± 0.046 Ma comparable with the age of the Earth (4543 Ma), respectively.

Level for award;(Hons, MSc, PhD, N/A)?

N/A

Apply to be considered for a student ; award (Yes / No)? No

Primary authors

Prof. Iyabo Usman (University of the Witwatersrand, Johannesburg.) Dr Samuel Ogana John (Department of Physics, Nasarawa State University, Keffi, Nigeria.)

Presentation Materials