APPLIED PHYSICSTHE SCIENTIFIC AND TECHNICAL JOURNAL
Radiation recombination at the irradiation of atomic clusters by intense femtosecond laser pulses V. P. Krainov, A. V. Sofronov
New mechanism is suggested for generation of hard x-ray radiation at the interaction of atomic clusters
with intense femtosecond laser pulses. Electrons which are ejected from the cluster due to outer ionization, can get
again inside the neighboring cluster interacting with the Coulomb field of positively charged cluster produced by
outer ionization. During the transition from continuum to
the ground state in this Coulomb field, electrons emit spontaneously photons with the energy
of several keV.
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