论文部分内容阅读
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 1600 e V and at densities from 1020 to 1022 cm-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-31/24d3/2)0and (3d-1 5/24d5/2)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 × 1021 cm-3.