Waste management is a challenge currently faced by nuclear energy worldwide. Most power plants operate in once-through cycle and all spent fuel stored long term. Fast reactors can recycle 96% of the material thermal reactors, reducing drastically time required to store waste. The S-PRISM reactor modular, pool-type sodium-cooled fast that with variety types. In this study, advantages presented w...

We consider the potential detection of chameleons using bouncing ultracold neutrons. We show that the presence of a chameleon field over a planar plate would alter the energy levels of ultracold neutrons in the terrestrial gravitational field. When chameleons are strongly coupled to nuclear matter, β≳10(8), we find that the shift in energy levels would be detectable with the forthcoming GRANIT ...