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  • Short Wavelength Coherent Radiation: Generation and Applications
  • Technical Digest Series (Optica Publishing Group, 1988),
  • paper SWLOS189

X-Ray Emission Studies of Sub-Picosecond Laser Produced Plasmas

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We report on both experimental and theoretical studies of high-temperature, high-density plasmas produced when a solid is illuminated with intense, 160 femtosecond laser pulses. Time resolved measurements have determined the x-ray pulsewidth from the plasma to be 2 ± 2 psec in all spectral regions up to a kilovolt. Spectroscopic observations demonstrate that the x-ray emission comes from regions of density higher than those found in a conventional laser produced plasma. Finally reflectivity measurements indicate that the laser is absorbed at the surface of the solid before it expands.

© 1988 Optical Society of America

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