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Phys. Rev. A 37, 1684 - 1690 (1988)

Generation of ultrashort x-ray pulses

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D. G. Stearns, O. L. Landen, E. M. Campbell, and J. H. Scofield
Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550

Received 27 July 1987

We report on the characterization of ultrashort (<10 psec at 1 keV), high-brightness (1020 photons/sec mm2eV into 2π sr at 1 keV) x-ray pulses. The pulses are generated by exciting a preformed laser-produced plasma using an ∼1 GW, picosecond laser pulse. Time-resolved measurements of the x-ray emission from a solid Au target are presented as well as the variation in the yield with laser energy and the angle of incidence. Time-integrated x-ray emission yields and spectra are presented for Si, Ti, and Au solid targets. Physical mechanisms responsible for the x-ray generation are discussed.


©1988 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.37.1684
DOI: 10.1103/PhysRevA.37.1684
PACS: 52.50.Jm, 52.40.Nk, 32.30.Rj

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