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Target atomic number effect on the duration and conversion efficiency of ultrashort x-ray pulses (1996)

Pelletier, J. F. ; Chaker, M. ; Kieffer, J. C.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 69 (1996), S. 2172-2174

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: High-density plasmas produced by 400 fs, 1018 W/cm2 laser pulses are characterized with a transmission grating spectrometer coupled to an x-ray streak camera. Conversion efficiencies and durations of the soft x-ray emission in the 0.1–1.2 keV energy range are analyzed for different target materials (Fe, Cu, Mo, Ta, and Pb). Our results show that the x-ray emission duration is constant for the different materials, with an average value of 4 and 5.7 ps in the 0.8–1.2 keV and 0.2–0.3 keV ranges, respectively. The converstion efficiency is optimal for a Ta target and is about 0.3% for both energy ranges. © 1996 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.117155

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