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  • Articles  (51)
  • Springer  (51)
  • 2000-2004  (14)
  • 1980-1984  (30)
  • 1965-1969  (6)
  • 1935-1939  (1)
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  • Articles  (51)
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  • 1
    Electronic Resource
    Electronic Resource
    On a semi-experimentally determined nuclear matter phase diagram (1983)
    Springer
    The European physical journal 313 (1983), S. 369-370 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown how for temperatures below the critical one (Tc≈20 MeV) the phase diagram of hot nuclear matter may be reconstructed by using experimentally determined cluster abundances from nucleus-nucleus collisions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01439493
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  • 2
    Electronic Resource
    Electronic Resource
    Strong impact of the electron-photon matrix element on angle-resolved photoelectron spectra of Sr 2 CuO 2 Cl 2 (2001)
    Springer
    The European physical journal 23 (2001), S. 69-77 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 74.72.Jt Other cuprates – 79.60.-i Photoemission and photoelectron spectra – 74.25.Jb Electronic structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In recent years insight has been gained into the electronic structure of layered cuprates using angle-resolved photoelectron spectroscopy. In many of these studies it is assumed that the electron-photon matrix element follows the trends set by the atomic photoionization cross sections and does not influence lineshape, dispersion and the k-dependence of the spectral intensity. In this study using Sr2CuO2Cl2 as an example it will be shown that the electron-photon matrix element can have a strong impact on both strength and shape of a feature in an angle-resolved photoelectron spectrum of a layered cuprate which can strongly affect information on character and the momentum-dependence of the energy and spectral weight of a state deduced from the spectra. The results of this study put an emphasis on the need to employ the whole parameter range of the ARPES method to get reliable information on the spectral function of cuprates for which purpose synchrotron radiation is an uniquely suited tool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510170083
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  • 3
    Electronic Resource
    Electronic Resource
    Technicolor unification without catastrophe? (1983)
    Springer
    The European physical journal 16 (1983), S. 347-352 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The extended technicolor modelSU(8) ⊃SU(5)×SU(3) c ×U(1)⊃SU TC(3)×SU w(2)×SU c(3) ×U(1) with fermion representations containing three quark lepton families attracts attention because of its unique technicolor coupling: it increases in the infrared circumventing a no-go theorem and further-more stays big over the whole technicolor range. Hence an enhancement of fermion and pseudogoldstone masses proposed by Holdom might happen, allowing for a large sideways scale. A scalar field in the 1015 GeV range introduced in order to break an exact global flavour symmetry of the model is argued to influence strongly the vacuum alignment in the technicolor sector. It permits an explanation of the quark lepton mass pattern even with-out a detailed fit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01577104
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  • 4
    Electronic Resource
    Electronic Resource
    Automatisches Herstellen von englumigen Glaskapillaren, Glasfäden und Mikropipetten (1966)
    Springer
    Naturwissenschaften 53 (1966), S. 582-582 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00600532
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  • 5
    Electronic Resource
    Electronic Resource
    Semiconductor laser physics (1982)
    Springer
    Applied physics 28 (1982), S. 208-218 
    Details
    ISSN: 1432-0649
    Keywords: 85.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697847
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  • 6
    Electronic Resource
    Electronic Resource
    Defect generation in polycrystalline Cu(In,Ga)Se2 by high-energy electron irradiation (2000)
    Springer
    Applied physics 70 (2000), S. 677-680 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 61.80.Fe; 61.82.Fk; 84.60.Jt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. We investigate the degradation of ZnO/CdS/ Cu(In,Ga)Se2 heterojunction solar cells for space applications and the defect generation in polycrystalline Cu(In,Ga)Se2 thin films by irradiation with 1-MeV electrons with fluences φe up to φe=5×1018 cm-2. Notable degradation of the solar cell performance starts at fluences of φe=1017 cm-2 where the open circuit voltage decreases by about 5% while short circuit current and fill factor remain essentially unaffected. Thus, Cu(In,Ga)Se2 solar cells withstand electron fluences which are higher by one order of magnitude or more when compared to other technologies. A model describes the absolute open circuit voltage loss considering the increase of space charge recombination by electron irradiation-induced defects. Defect analysis by admittance spectroscopy shows that acceptor defects with an energy distance of approximately 300 meV from the valence band are generated at a rate γ=0.017 (±0.01) cm-1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050014
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  • 7
    Electronic Resource
    Electronic Resource
    Generation of acoustic surface waves on GaAs by photoexcitation (1982)
    Springer
    Applied physics 28 (1982), S. 211-214 
    Details
    ISSN: 1432-0630
    Keywords: 78.35 ; 68.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In the experiments reported here we observed the generation of non-thermal, large amplitude acoustic surface waves at GHz frequencies on the surface of a GaAs crystal under intense illumination with 514.5 nm radiation from an Ar+ laser at room temperature. The acoustic surface waves were detected by optical Brillouin spectroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00618696
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  • 8
    Electronic Resource
    Electronic Resource
    Mössbauer and high field magnetization studies of the solid solution CoFexAl2-xO4 (1982)
    Springer
    Physics and chemistry of minerals 8 (1982), S. 206-211 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract By means of paramagnetic Mössbauer spectra the cation distribution of the solid solution CoFe x Al2−x O4 with 0≦x≦1.5 has been determined. The existence of high field magnetic susceptibility at low temperature for samples with x≧0.4 has been interpreted in terms of non-collinear ferrimagnetic arrangements. Below the Neel temperature the spinel CoAl2O4 has a complex antiferromagnetic behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00309479
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  • 9
    Electronic Resource
    Electronic Resource
    Variance comparison as a tool in clinical pharmacology: An example with two loop diuretics (1982)
    Springer
    European journal of clinical pharmacology 23 (1982), S. 221-224 
    Details
    ISSN: 1432-1041
    Keywords: frusemide ; piretanide ; variance comparison ; regularity of effect ; activity comparison ; drug excretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Comparison of variances can be useful in assessing the regularity of drug effects. In order to compare the variances of the saluretic effects of piretanide and frusemide, two loop diuretics with different bioavailabilities, a double-blind cross-over study was carried out in 34 normal volunteers. The diuretics were given in randomized order, with an interval of 7 days, in single equipotent doses (frusemide 6.25 mg and piretanide 1.0 mg chosen from previous results) adjusted by body weight. The dispersion of individual values (comparison of variances from paired measures) for Na+, Cl− and Ca++ excretion, urine osmolality and excretion of the drugs, was significantly smaller for piretanide than for frusemide. It is concluded that the saluretic effect of a single dose of piretanide varies less than that of an equipotent dose of frusemide. The methodology may be useful in trials of drugs for which regularity of effect is important.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00547557
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  • 10
    Electronic Resource
    Electronic Resource
    The influence of electrode potential on the corrosion of gas turbine alloys in sulfate melts (1982)
    Springer
    Oxidation of metals 18 (1982), S. 195-223 
    Details
    ISSN: 1573-4889
    Keywords: Acidic and basic fluxing ; hot corrosion ; sulfate melts, super alloys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The influence of the electrode potential on the corrosion behavior of a series of nickel- and cobalt-base gas turbine alloys has been investigated in a (mole %) 53Na2SO4+7CaSO4+40MgSO4 melt at 1073 and 1173 K and in a 90Na2SO4+10K2SO4 melt at 1173 K. Only acidic fluxing is observed in the (Na 2,Ca, Mg)SO4 melt at positive potentials while a protective scale rich in MgO is formed on all alloys at negative potentials. This scale prevents basic fluxing because MgO is insoluble in neutral and basic melts. The breakthrough potential for acidic fluxing is a function of the material composition. Increasing chromium content of the alloys extends the potential range of protective film formation. Acidic and basic fluxing are observed in the (Na, K)2SO4 melt. Acidic fluxing occurs at positive and basic fluxing at negative potentials. A protective scale is formed in an intermediate (neutral) potential range on the high-chromium alloys IN-597 and IN-738 LC. Here, too, the breakthrough potentials for acidic and basic fluxing are influenced by the composition of the alloys.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00662038
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