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In the present study, the suitability of Raman spectroscopy for nuclear forensics is proven by a systematic investigation of laboratory-prepared synthetic and industrial uranium ore concentrate (UOC) samples, of different origin and with wide range of impurity content. Besides the identification of the compound type, the identification of process-related impurities observed in these samples is reported for the first time. Both handheld and laboratory Raman spectrometers were used in the measurements. The ability to measure different UOCs and the sufficient sensitivity of the handheld device demonstrate its usefulness in nuclear safeguards and nuclear security applications. Even more importantly in such a context, the likely identity of process-related impurities could be verified by Raman Spectroscopy in the present work, allowing to draw conclusions on the process history of the sample.

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Measurements of the second-harmonic electron cyclotron radiation emitted perpendicularly to the magnetic field in the T-10 tokamak are presented. The radial profiles of electron temperature were obtained by changing the value of the toroidal field. The comparison with electron temperature obtained by Thomson scattering shows that, in agreement with hot-plasma theory, the plasma radiates like a black body at the local value of the electron temperature.