@inproceedings{oai:repo.qst.go.jp:00054889,
 author = {ハリーズ, ジェームズ and S.Kuma and H.Iwayama and E.Shigemasa and ハリーズ ジェームズ},
 book = {X-Ray Lasers 2016},
 month = {Mar},
 note = {We discuss the observation of superfluorescence following the excitation of helium atoms with pulses from a free-electron laser. From semi-classical simulations and consideration of transition parameters, we predict that it should be possible to generate pulses of EUV superfluorescence using two-photon excitation.},
 pages = {105--108},
 publisher = {Springer},
 title = {Superfluorescence/Superradiance in Helium Following Free-Electron Laser Excitation},
 year = {2018}
}