重離子(heavy ion)泛指所有質量比氦原子核大(即質量數大於4)的離子[1]。簡單的說就是比氦原子大的原子核或離子(像是碳、矽、鎢、金、鉛或鈾等的原子核)。在核子物理學中,重離子通常用來製造更重的元素或核種,像是以鈣-48轟擊鐦-249的原子核,就有機會產生超重元素鿫。
參考
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