Phys. Rev. A 37, 1684–1690 (1988)Generation of ultrashort x-ray pulsesReceived 27 July 1987; published in the issue dated March 1988 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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