X-RAY LASER GAIN MEASUREMENTS AND BEAM OPTICS DIAGNOSTICS IN Ne-LIKE Ge
类氖锗的X射线激光增益及其传输特性研究

The X-ray laser investigations in Ne-Like Ge were carried out using Shengguang (1012W) laser facility. An 1 m packaged grazing incidence grating spectrograph was positioned to view the plasma axially. The gain coefficients and the beam patterns were obtained from lasing line spectra. The measured gain coefficients of 19.638, 23.224, 23.627, 24.743 and 28.643 nm lasing lines were 3.06, 3.99, 3.72, 2.36 and 4.59 cm-1 respectively, the diverence angles of X-ray laser beams were about 12 mrad, the angles of X-ray laser beams from the axis of the line focus plasma were about 5.7 mrad.