Dependence of the yield of hard incoherent X-rays from femtosecond laser plasma on the atomic number of a target material

The yield of hard incoherent X-rays emitted by a dense femtosecond laser plasma is studied as a function of the atomic number Z of the target material. It is shown that for Z values in the range from 14 (Si) to 73 (Ta), the efficiency of laser radiation conversion to X-rays with quantum energy excee...

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