Abstract
Charge Neutralization in Nickel Coated Simulated High Level Waste Glass Analyzed by Secondary Ion Mass Spectrometry
Highlights
Nuclear Power Programme in India is based on “closed fuel cycle”
The zigzag black lines near the analysis region are due to the arcing effects produced by charge build up on the analysis region. figure 1(b) represents the condition in which Normal incidence Electron Gun (NEG) is made active before the primary beam
The area covered by the electron beam is greater than the primary beam raster area as shown by the contrast in the light colour observed in the region near the analysis area shown in figure 1(b)
Summary
Nuclear Power Programme in India is based on “closed fuel cycle”. Closed fuel cycle involves reprocessing and recycling of spent nuclear fuel coming out of nuclear reactors. A novel approach for charge neutralization has been presented, by replacing the noble metals Au, Pt and Pd used in the conductive coating of HLW glasses with Ni and operating SIMS in negative secondary ion beam mode in conjunction with NEG. The surface, depth and 3D distribution analyses of elements in Ni coated ‘G10’ sample was investigated by using magnetic sector Cameca IMS-7f instrument equipped with both oxygen (O2+ and O-) and cesium (Cs+) primary ion beams.
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