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  • Articles  (90)
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  • 42.55  (64)
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  • Articles  (90)
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  • Springer  (90)
  • American Association for the Advancement of Science
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  • 1
    Electronic Resource
    Electronic Resource
    In-depth concentration profiling of garnet epilayers using secondary ion mass spectrometry (1977)
    Springer
    Applied physics 12 (1977), S. 283-286 
    Details
    ISSN: 1432-0630
    Keywords: 07 ; 61.80 ; 68.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Rapid and reliable SIMS profiling of insulators can be achieved by using negative primary ions and a diaphragm placed on the specimen for charge compensation. Results with garnet LPE layers demonstrate the compositional variations arising from non-steady state growth conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00915203
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  • 2
    Electronic Resource
    Electronic Resource
    The investigation of radiation damage by electron beam absorption measurements (1978)
    Springer
    Applied physics 16 (1978), S. 339-343 
    Details
    ISSN: 1432-0630
    Keywords: 61.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Radiation damage in silicon was investigated by monitoring the absorbed sample current in a scanning electron microscope. The existence of different types of damage after implantation of light or heavy ions, respectively, could be revealed by plotting the change in sample current at the implantation boundary versus beam voltage. Results are explained by considering the yield and the anisotropy of electron backscattering in the presence of either small isolated defects or extended damaged zones. Applications of the new method are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00885857
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  • 3
    Electronic Resource
    Electronic Resource
    Propagation of ultrasonic shear waves in γ-ray irradiated quartz crystals (1977)
    Springer
    Applied physics 13 (1977), S. 171-173 
    Details
    ISSN: 1432-0630
    Keywords: 61.70 ; 61.80 ; 62
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Ultrasonic pulsed-echo patterns in AC-cut quartz crystals cooled to 4.2 K have been studied over the frequency range 0.2〈f〈0.6 [GHz]. The observed beats, superimposed on the exponential decay, have been identified as resulting from diffraction of the waves in the finite-size crystals. Furthermore, it has been found that irradiation with 1 MeV γ-rays yields samples with both a smaller attenuation constant and less pronounced beats. The significance of the reported results lies mainly in the potential application of the procedure of γ-ray irradiation, and subsequent bleaching with ultraviolet light, in order to obtain quartz crystals with improved acoustic patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00882477
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  • 4
    Electronic Resource
    Electronic Resource
    Lasing properties of some metal complexes of compounds containing the methyleneiminobisacetic acid group (1977)
    Springer
    Applied physics 13 (1977), S. 287-290 
    Details
    ISSN: 1432-0630
    Keywords: 78.60 ; 61.80 ; 82.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Aqueous solutions of some fluorescent metal complexes of three compounds containing the methyleneiminobisacetic acid group have been found to show lasing when tested on a pulsed nitrogen laser. Degradation constants for lasing of one of the complexes and of the corresponding uncomplexed dye have been determined by coaxial flashlamp pumping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00882894
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  • 5
    Electronic Resource
    Electronic Resource
    Excimer ArF/XeF lasers providing high-power stimulated radiation in Ar/Xe and F lines (1977)
    Springer
    Applied physics 14 (1977), S. 231-233 
    Details
    ISSN: 1432-0630
    Keywords: 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Lasing in atomic lines of noble gases and fluorine, prior to excimer radiation, was observed in an electric discharge ArF/XeF excimer laser. Some Ar/Xe lines end at metastable levels, which are very important for the formation of ArF/XeF excimer molecules. Five new lasing lines of atomic fluorine have been obtained. Consideration is given to the use of lasing in atomic and molecular lines, that occurs in one burst, in investigations of the excitation kinetics of excimer states under the conditions of a high-pressure electric discharge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00883096
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  • 6
    Electronic Resource
    Electronic Resource
    Properties and current-voltage characteristics of discharges in waveguide gas lasers (1977)
    Springer
    Applied physics 14 (1977), S. 277-282 
    Details
    ISSN: 1432-0630
    Keywords: 42.55 ; 52
    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 paper deals with the properties andI-V characteristics of discharges in narrow capillaries used, for example, for He−Ne waveguide lasers. It has been observed that discharges in He−Ne waveguide lasers are unstable because of the strongly falling characteristic. A theory is presented which assumes that at low currents wall charges restrict the positive column to a narrow plasma channel and are the main reason for the observed falling characteristic. A numerical evaluation for helium gives results which agree well with experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00882732
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  • 7
    Electronic Resource
    Electronic Resource
    Models of DNA-dye-complexes: Energy transfer and molecular structures as evaluated by laser excitation (1979)
    Springer
    Applied physics 18 (1979), S. 333-338 
    Details
    ISSN: 1432-0630
    Keywords: 87 ; 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Energy transfer in DNA-dye-complexes after excitation in the UV down to 220 nm by means of a tunable laser was investigated. DNA of different base composition and polynucleotides were compared. The dyes proflavine, acridine orange and ethidium bromide were used. The energy transfer from DNA-bases to dye molecules was measured in dependence of the excitation wavelength and the base composition of the DNA. Models of the energy transfer from DNA to dye and of the molecular structures of the DNA-dye-complex (intercalation) could be deduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00899685
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  • 8
    Electronic Resource
    Electronic Resource
    The sputtering mechanism for low-energy light ions (1979)
    Springer
    Applied physics 18 (1979), S. 391-398 
    Details
    ISSN: 1432-0630
    Keywords: 61.80 ; 79.20
    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 computer simulation program MARLOWE which follows the trajectories of energetic ions and recoiling target atoms in solids has been used to calculate sputtering yields for low energy (0.1–10keV) light ions (H, D, T,4He). Recoil energy densities were calculated for comparison with analytical theories. The sputtering yields obtained for amorphous Fe agree within a factor of two with experimentally measured values for polycrystalline stainless steel, while the calculated yields for protons on amorphous molybdenum are more than twice the experimental values on polycrystalline material. The calculations show that in the parameter range investigated, ions backscattered in the solid contribute a major part to sputtering. This result confirms earlier calculations of the threshold energy for sputtering which are in agreement with recent measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00899693
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  • 9
    Electronic Resource
    Electronic Resource
    Free-electron lasers and masers on curved paths (1979)
    Springer
    Applied physics 19 (1979), S. 47-51 
    Details
    ISSN: 1432-0630
    Keywords: 42.55 ; 42.80
    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 possibility of building free-electron lasers and masers with quasi-circular undulators is considered. The two-mirror cavity is replaced by a suitable waveguide. The magnetic field along the orbit has a continuous component superimposed on the alternating one. Besides allowing large freedom for electron guiding and focusing, the structure allows effective negative mass conditions, which may enhance the electron beam modulation when space charge effect are important. Furthermore the radiation frequency can be higher than that in a linear undulator with the same electron energy, and long interaction times are possible in a compact structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00900537
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  • 10
    Electronic Resource
    Electronic Resource
    Laser properties of praseodymium pentaphosphate single crystals (1979)
    Springer
    Applied physics 19 (1979), S. 345-351 
    Details
    ISSN: 1432-0630
    Keywords: 78.55 ; 42.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract PrP5O14, PrxLa1−xP5O14, and PrxY1−xP5O14 (0≦x≦1) single crystals of laser quality were synthesized and their crystallographic and optical parameters measured. Laser emissions in the visible (λ=637.4 nm) with no mirrors in place (superradiance) and also in various optical resonators have been observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00900479
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