Assertion: tritium's nucleus | /r/CapableOf | get
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text: A heuristic for estimating reaction rates is that nuclei must be able to get within 100 femtometers (1 × 10−13 meter) of each other, where the nuclei are increasingly likely to undergo quantum tunneling past the electrostatic barrier and the turning point where the strong nuclear force and the electrostatic force are equally balanced, allowing them to fuse.