windmill wrote:So, correct me if I'm wrong, but reading the new patent, Polywell now: 1) does not need an electron-beam-injected potential well to operate, 2) requires a 2.5 meter radius core to generate just 90MW of fusion power even with D-T, and 3) has even less of a chance than before of burning aneutronic fuels with a decent fusion Q.
If memory serves me right the first two of those assumptions was based on the results from WB-8, the High beta cusp device and some simulations. Everything should have been further validated/investigated in the proof of principle reactor that didn't get funded till now.
Considering the lack of a broader scientific experimental database, even if the latest experimental run they made did indeed show a glimpse of a promising situation (especially when they was shooting at higher power), I would suggest you to consider the first 2 points with a grain of salt.
The third point was just the result of a numerical simulation, I would not consider it meaningful until there is some scientific data to support it.