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Harries, J.; 大饗 千彰*; 岩山 洋士*; 川口 健太郎*; 久間 晋*; 宮本 祐樹*; 永園 充*; 中嶋 享*; 矢橋 逸夫*; 繁政 英治*; et al.
no journal, ,
Superfluorescence is the rapid, collective emission of radiation following the ultrafast creation of a population inversion in an atomic medium. We report the results of experiments and simulations for the excitation of helium atoms using pulses from the SCSS EUV free-electron laser.