[10a-M135-1~11] 3.6 Ultrashort-pulse and high-intensity lasers

[10a-M135-3] Time-resolved soft X-ray absorption spectroscopy of molecular nitrogen at 400 eV using high harmonics

〇Nariyuki Saito¹, Hiroki Sannohe¹, Nobuhisa Ishii¹, Teruto Kanai¹, Jiro Itatani¹ (1.ISSP)

Keywords:high-harmonic generation, X-ray absorption spectroscopy

We report on a time-resolved soft X-ray absorption spectroscopy of molecular nitrogen at the K-edge (400 eV) using high harmonics generated by a 1600-nm optical parametric chirped-pulse amplifier. An ultrafast absorption change in the Rydberg absorption peaks is observed.