与核裂变依靠原子核分裂释放能量不同,聚变由较轻原子核聚合成较重原子核释放能量,常见的是由氢的同位素氘与氚聚合成氦释放能量。 Unlike nuclear fission, which relies on the release of energy by nuclear fission, the fusion releases energy from the polymerization of lighter nuclei to heavier nuclei. It is common for hydrogen to release energy from the condensation of deuterium and tritium into helium.