ヘリウムイオンの FEL 励起に伴う超蛍光、ヨーク超蛍光、自由誘 導減衰、四光波混合
ハリーズ ジェームズ, James Harries
Abstract
We report the observation of superfluorescence at wavelengths of 469 nm, 164 nm and 30.4 nm from helium ions created and excited using pulses from the EUV free-electron laser at SACLA BL1. Experimental observations of intense, highly-directional emission (all 3 wavelengths) and a 1/(density) pulse delay dependence (469 nm emission), along with a detailed numerical simulation support our interpretations.