出典:Wiktionary
出典:『Wiktionary』 (2026/04/01 20:18 UTC 版)
diproton (plural diprotons)
What happens in a star is probably something like this: protons (H nuclei) move so fast that they come together despite their Coulomb repulsion, forming a diproton. Usually the two protons then separate. But very rarely they stay together, and one of them turns into a neutron, resulting in heavy hydrogen: deuterium.
出典:Wikipedia
出典:『Wikipedia』 (2011/05/01 23:02 UTC 版)
A diproton (or helium-2, symbol 2
He) is a hypothetical type of helium nucleus consisting of two protons and no neutrons. Diprotons are not stable; this is due to spin-spin interactions in the nuclear force, and the Pauli exclusion principle, which forces the two protons to have anti-aligned spins and gives the diproton a negative binding energy.