ABSTRACT
A Nickel-like Yttrium x-ray laser at 23.4 nm J. Zhao, F. Yan, JY Zhong, J. Zhang® Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
Abstract: A nickel-like yttrium collisional-excitation x-ray laser at 23.4 nm pumped by a Ins prepulse followed by a lps main pulse is simulated using a one-dimensional Lagrangian hydrodynamic code MED 103 coupled with an atomic physics data package. The optimized conditions of preplasmas are achieved by optimizing the intensity of the prepulse and the time delay between the prepulse and the main pulse. By using a two-dimensional ray tracing code, the output intensity and the propagation properties of the x-ray laser are simulated with different parameters of the main pulse. The results show that Ni-like yttrium ions are very sensitive to the intensity and the duration of the main pulse. We predict a saturated output with an effective gain product length of 14 can be generated by the optimized drive configuration with an energy about 1.0J.
