Editing Subcritical reactor (section)

== Muon-driven systems for nuclear waste disposal ==
Subcritical methods for use in [[Radioactive waste|nuclear waste]] disposal that do not rely on neutron sources are also being developed.<ref>{{cite book |doi=10.7566/JPSCP.21.011063|isbn=978-4-89027-130-6|doi-access=free|chapter=Intense Negative Muon Facility with MERIT Ring for Nuclear Transmutation|title=Proceedings of the 14th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2017)|year=2018|last1=Mori|first1=Yoshiharu|last2=Taniguchi|first2=Akihiro|last3=Kuriyama|first3=Yasutoshi|last4=Uesugi|first4=Tomonori|last5=Ishi|first5=Yoshihiro|last6=Muto|first6=Masayuki|last7=Ono|first7=Yuka|last8=Okita|first8=Hidefumi|last9=Sato|first9=Akira|last10=Kinsho|first10=Michikazu|last11=Miyake|first11=Yasuhiro|last12=Yoshimoto|first12=Masahiro|last13=Okabe|first13=Kota}}</ref> These include systems that rely on the mechanism of [[muon capture]], in which [[muon]]s (μ<sup>−</sup>) produced by a compact accelerator-driven source [[Nuclear transmutation|transmute]] long-lived radioactive isotopes to stable isotopes.<ref>{{Cite web|last=Nagamine|first=Kanetada|date=2016|title=Nuclear Waste Disposal method and its apparatus using muon-nuclear-absorption (WO2016143144A1)|url=https://worldwide.espacenet.com/patent/search/family/056878645/publication/WO2016143144A1?q=pn%3DWO2016143144A1|archive-url=|archive-date=|access-date=|website=Espacenet (patent database)}}</ref>