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  • 1
    Electronic Resource
    Electronic Resource
    Nanosecond-time-resolution thermal emission measurement during pulsed excimer-laser interaction with materials (1996)
    Springer
    Applied physics 62 (1996), S. 51-59 
    Details
    ISSN: 1432-0630
    Keywords: 44.10. + i ; 64.70.Dv ; 79.20.Ds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A nanosecond-time-resolution pyrometer has been developed for measuring the transient surface temperature of a solid material heated by pulsed excimer-laser irradiation. Fast germanium diodes are employed to capture the transient thermal emission signals in the wavelength range between 1.2 and 1.6 pm. The surface temperature is derived from the measured spectral thermal emission. The directional spectral emissivity is determined in situ by measuring the transient directional spectral reflectivity and applying Kirchhoffs law. The experimental results are in good agreement with numerical thermal modeling predictions. The pyrometric thermal emission measurement also yields the solid/liquid interface temperature during the pulsed excimer-laser-induced melting. The relation between the measured interface superheating temperature and the interface velocity reveals the melting kinetic relation during the high-power, short-pulse laser-induced phase-change processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01568087
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Mechanical properties and molecular mobility in oriented polyolefines (1987)
    Springer
    Colloid & polymer science 265 (1987), S. 220-225 
    Details
    ISSN: 1435-1536
    Keywords: Fibers ; elastic modulus ; correlation time ; molecularmobility ; orientation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The static modulus of elasticity (E) and the correlation time of rotation (τ c ) of 2,-2,6,6-tetramethylpiperidine-1-oxyl are studied as a function of the temperature (210〈T 〈350°K) for oriented films of isotactic polypropylene and polyethylene of high and low density.E andτ c change both upon heating and polymer orientation; this result indicates that sample properties are influenced by the microstructure of the amorphous phase where probes are localized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412710
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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