Nickel-Like Samarium 4d-4p X-Ray Laser Gain in Laser Plasmas
DONG Guo-Xuan1, ZENG Jiao-Long2
1Department of Mathematical and Physical Sciences, National Natural Science Foundation of China, Beijing 100085
2National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
Nickel-Like Samarium 4d-4p X-Ray Laser Gain in Laser Plasmas
DONG Guo-Xuan1;ZENG Jiao-Long2
1Department of Mathematical and Physical Sciences, National Natural Science Foundation of China, Beijing 100085
2National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
Abstract: Populations of the 249 levels belonging to the ground configuration 3s23p63d10 and those of single excitations of a 3d, 3p or 3s electron to the orbitals of n=4 and 5 have been calculated for nickel-like samarium at temperatures from 300 to 1600eV and at densities from 1020 to 1022cm-3. The gain coefficients for possible x-ray laser lines are also determined under these plasma conditions. The possible laser lines are transitions from levels (3d-13/24d3/2)0 and (3d-15/24d5/2)0 to levels (3d-13/24p1/2)1, (3d-15/24p3/2)1 and (3d-13/24p3/2)1. The favourable plasma condition for x-ray lasers is at the temperature of about 800eV and at the density of approximately 5.0×1021cm-3.