Monochromatic x-rays from the Bonn 2.3GeV-Synchrotron were employed for inner shell excitation of argon. The vacancies are filled via a branching cascade which leads to the emission of a number of electrons.

• 利用德国波恩2.；3GeV同步辐射加速器作为辐射源；采用飞行时间法测得软X射线引起氲原子内壳电离后；电离产物的飞行时间谱。