[en] Raman spectroscopy has been used to characterize uranium hydride and deuteride. Raman shifts of UH_3 and UD_3 are evident to be inversely proportional to the square root of the mass of hydrogen isotope. The typical Raman peaks of UH_3 and UD_3 can be characterized by the mass difference of hydrogen isotope for one another. In addition, Raman peaks of uranium hydride and deuteride are identified to be at 725 and 938 cm"−"1 for UH_3 and 518 and 669 cm"−"1 for UD_3, respectively

[en] DEB hydrogen getter has been prepared by mixing DEB(ω = 75%) and Pd/C(ω = 25%) catalyst and then grinding for 5 h. The hydrogen uptake capability has been characterized by PVT method. Raman spectrum was used to characterise DEB hydrogen getter before and after hydrogen uptake process. The results show that the hydrogen uptake capacity of DEB can attain 87.5% of the theoretical value. When the uptake capacity of DEB reaches 50% of the theoretical value, the residual hydrogen content in the argon can be also controlled to less than 10 × 10^-6. Raman spectra analysis indicates that the strength of stretch vibration of the carbon-carbon triple bond gradually becomes weaker as the hydrogen uptake proceeds. (authors)

[en] The residual coolant on the surface of uranium after manufacture is inevitable and it will be effective on the corrosion of uranium. IR and Raman spectra were used to investigate the contamination on the uranium surface in this study. The results show that Raman spectrum and infrared spectrum can distinguish the contamination species and determine the amount of contamination. The results also show that the distribution of contamination is not uniform. (authors)