@article {dehn2020direct, title = {Direct observation of muonium reacting with uncapped gold nanoparticles in porous silica and nature of the final state}, journal = {The Journal of Chemical Physics}, volume = {152}, number = {18}, year = {2020}, pages = {184706}, publisher = {AIP Publishing LLC}, author = {Dehn, MH and Cao, Y and Wang, P-X and Cottrell, SP and MacLachlan, MJ and Fleming, DG and Kiefl, RF} }