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Can somebody explain, what exactly is "ignition"? If even a single helium atom is fused you have "more energy than you have put into it". That does not seem imp
by macilacilove 3y ago
Can somebody explain, what exactly is "ignition"? If even a single helium atom is fused you have "more energy than you have put into it". That does not seem impressive.
- dist-epoch 3y agoNo, you have more energy than two separate helium atoms. You haven't counted the energy required to make them fuse in the first place.
- eesmith 3y agoThere is a nice Sankey diagram at https://en.wikipedia.org/wiki/National_Ignition_Facility#System https://en.wikipedia.org/wiki/National_Ignition_Facility#Sys... showing where the energy losses go.
- ynlefevre 3y agothis may help: https://lasers.llnl.gov/science/ignition https://lasers.llnl.gov/science/ignition