| | Quantum Theory indicates that this would be impossible with electrons, but it is known to occur with a [[muon]] instead of an electron. Since a muon is 207 times heavier than an electron it orbits 207 times closer. <ref>http://www.rikenresearch.riken.jp/eng/frontline/5976</ref> | | Quantum Theory indicates that this would be impossible with electrons, but it is known to occur with a [[muon]] instead of an electron. Since a muon is 207 times heavier than an electron it orbits 207 times closer. <ref>http://www.rikenresearch.riken.jp/eng/frontline/5976</ref> |
| − | However, Muon-catalyzed fusion requires the production of muons, which requires substantial energy, and while one muon may catalyze more than one fusion reaction, eventually the muons are captured by other nuclei, such as helium, and the muon cannot then cause more fusions. It is real, but far from practical for energy production, as far as any approach known. | + | However, muon-catalyzed fusion requires the production of muons, which requires substantial energy, and while one muon may catalyze more than one fusion reaction, eventually the muons are captured by other nuclei, such as helium, and the muon cannot then cause more fusions. It is real, but far from practical for energy production, as far as any approach known. |