Grazing incidence grating spectrometer in the low energy x-ray region

A new soft X-ray grating spectrometer for studying laser produced plasmas has been developed. The 1 m grating incidence vaccum spectrometer is equipped with a 1200 grooves / mm or 600 grooves / mm grating and a 1000 A thick aluminum filter. The spectrometer is arranged at a vaccum target chamber when it is used to measure the ionic distribution. It is aligned accurately in target plane using 4 D. adjustment unit and a system with optical fiber bundle, electronic camera and TV monitor. The design of optical system, novel construction of spectrometer, and experiment arrangement and results are discussed.