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  • PACS: 79.20.D; 61.80.B; 61.82.P  (2)
  • PACS:12.40.Vv Vector-meson dominance – 21.65.+f Nuclear matter  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Low-mass dileptons at the CERN-SpS: evidence for chiral restoration? (1999)
    Springer
    The European physical journal 6 (1999), S. 415-420 
    Details
    ISSN: 1434-601X
    Keywords: PACS:12.40.Vv Vector-meson dominance – 21.65.+f Nuclear matter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Using a rather complete description of the in-medium ρ spectral function – being constrained by various independent experimental information – we calculate pertinent dilepton production rates from hot and dense hadronic matter. The strong broadening of the ρ resonance entails a reminiscence to perturbative q¯q annihilation rates in the vicinity of the phase boundary. The application to dilepton observables in Pb(158AGeV)+Au collisions – incorporating recent information on the hadro-chemical composition at CERN-SpS energies – essentially supports the broadening scenario. Possible implications for the nature of chiral symmetry restoration are outlined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050364
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Surface modification and structuring of electrical conducting and isolating polyaniline films (1999)
    Springer
    Applied physics 69 (1999), S. S291 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 79.20.D; 61.80.B; 61.82.P
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Laser ablation of polyaniline in its conducting and isolating form revealed very similar ablation properties upon irradiation at 308 nm. Both types of polymer film can be structured with high resolution at high fluences. The ablation craters have sharp contours and no debris contaminates the surrounding area. At low fluences the creation of cone structures is observed. X-ray photoelectron spectroscopy reveals the carbonization of the surface upon laser ablation. As preferred decomposition sites the imine groups in doped and undoped polyaniline are identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051402
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Imaging-XPS/Raman investigation on the carbonization of polyimide after irradiation at 308 nm (1999)
    Springer
    Applied physics 69 (1999), S. S651 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 79.20.D; 61.80.B; 61.82.P
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. The laser ablation of polyimide was studied using 308 nm laser irradiation ≤225 mJ cm-2. Confocal Raman microscopy revealed the deposition of carbon surrounding the ablation crater, which consists of amorphous carbon with some crystalline features. Inside the crater, graphitic material was detected on top of the cones, very similar to the material from cw-Ar+ ion laser irradiation. FT-Raman measurements reveal the presence of intermediates of the polyimide decomposition. Imaging-X-ray photoelectron spectroscopy confirmed the deposition of carbon material surrounding the ablation crater and showed that the oxygen and nitrogen contents of the remaining material decrease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051497
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    Paper (German National Licenses)
    Fulltext
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