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Träfflista för sökning "WFRF:(Knollenberg J.) srt2:(2005-2009)"

Sökning: WFRF:(Knollenberg J.) > (2005-2009)

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  • Kueppers, Michael, et al. (författare)
  • Triple F-a comet nucleus sample return mission
  • 2009
  • Ingår i: Experimental astronomy. - : Springer Science and Business Media LLC. - 0922-6435 .- 1572-9508. ; 23:3, s. 809-847
  • Tidskriftsartikel (refereegranskat)abstract
    • The Triple F (Fresh From the Fridge) mission, a Comet Nucleus Sample Return, has been proposed to ESA's Cosmic Vision program. A sample return from a comet enables us to reach the ultimate goal of cometary research. Since comets are the least processed bodies in the solar system, the proposal goes far beyond cometary science topics (like the explanation of cometary activity) and delivers invaluable information about the formation of the solar system and the interstellar molecular cloud from which it formed. The proposed mission would extract three sample cores of the upper 50 cm from three locations on a cometary nucleus and return them cooled to Earth for analysis in the laboratory. The simple mission concept with a touch-and-go sampling by a single spacecraft was proposed as an M-class mission in collaboration with the Russian space agency ROSCOSMOS.
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  • Martz, Dale, et al. (författare)
  • Large area high efficiency broad bandwidth 800 nm dielectric gratings for high energy laser pulse compression
  • 2009
  • Ingår i: Optics Express. - : Optical Society of America. - 1094-4087. ; 17:26, s. 23809-23816
  • Tidskriftsartikel (refereegranskat)abstract
    • We have demonstrated broad bandwidth large area (229 mm x 114 mm) multilayer dielectric diffraction gratings for the efficient compression of high energy 800 nm laser pulses at high average power. The gratings are etched in the top layers of an aperiodic (Nb0.5Ta0.5)2O5-SiO2 multilayer coating deposited by ion beam sputtering. The mean efficiency of the grating across the area is better than 97% at the center wavelength and remains above 96% at wavelengths between 820 nm and 780 nm. The gratings were used to compress 5.5 J pulses from a Ti:sapphire laser with an efficiency above 80 percent.
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  • Resultat 1-7 av 7

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