So, yesterday I didn´t get the chance to share a graph, so today you´ll get a double dose :D
Also, I got a complaint that the last graphs didnt´have any christmas decorations on them - so I´ve tried to do better this time...;)
Today you get two versions of ALPHA!
ALPHA is the "capture to fission ratio" - it tells us how often a neutron is captured/absorbed, rather than causing a nucleus to fission. We want ALPHA to be as low as possible - since a low ALPHA means that little waste is produced :D
First there is ALPHA for neutrons with low energy:
The red line is for uranium-233, and the blue is for plutonium-239. For low-energy neutrons, ALPHA is lower for uranium-233 than plutonium-239, and this means that there is a smaller waste production from thorium-fuels than uranium...IF the neutrons have a low energy/are thermal (this can´t be said often enough ;) )!
Then there is ALPHA for neutrons with high energy - and here it changes (as it also did with ETA):
For neutrons with high energy the waste production is smaller for uranium-fuels than with thorium...