@article{oai:repo.qst.go.jp:00048217,
 author = {飯田, 進平 (東理大) and 和田, 健 and 望月, 出海 (KEK) and 立花, 隆行 (立教大) and 山下, 貴志 (東理大) and 兵頭, 俊夫 (KEK) and 長嶋, 泰之 (東理大) and 和田 健},
 issue = {47},
 journal = {Journal of Physics: Condensed Matter},
 month = {Nov},
 note = {We have measured the time-of-flight of ortho-positronium emitted from Cs-, Na- and Li-coated single-crystal tungsten surfaces. The data obtained after the coating show a new positronium energy component with a specific energy loss in addition to the component whose emission energy is simply determined by the positron and the electron work functions. We suggest that this new component is attributed to the formation of positronium accompanied by inter-band transition and/or surface plasmon excitation at the surfaces.},
 pages = {475002-1--475002-4},
 title = {Emission of low-energy positronium from alkali-metal coated single-crystal tungsten surfaces},
 volume = {28},
 year = {2016}
}