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  • 1
    Electronic Resource
    Electronic Resource
    Line spectrum of the interstitial iron donor in silicon (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 2507-2509 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Photothermal ionization spectroscopy and infrared transmission measurements have been carried out on iron-doped silicon. A series of sharp lines in the range from 6100 to 6400 cm−1 was observed with both techniques. Photoionization cross-section spectra were determined by photothermal ionization spectroscopy and photoelectron paramagnetic resonance, and it is concluded that the lines originate from electronic transitions to excited shallow donor states at the interstitial iron impurity in the neutral charge state Fe0i. The lines and the Fe0i -related electron paramagnetic resonance signal annealed out together at approximately 170 °C. The line spectra are analyzed in terms of three overlapping donor series and the origins of these are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100210
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  • 2
    Electronic Resource
    Electronic Resource
    Interaction of hydrogen isotopes with metals: Deuterium trapped at lattice defects in palladium (1990)
    Springer
    Journal of fusion energy 9 (1990), S. 257-261 
    Details
    ISSN: 1572-9591
    Keywords: Trapping enthalpies ; lattice location ; hydrogen isotopes ; metals ; defects ; vacancies ; voids ; multiple occupancy of vacancies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract From an interplay between theory based on the effective-medium scheme and experiments, an extremely simple picture has evolved which is capable of describing a vast number of experimental quantities related to interaction of hydrogen with metals, especially the trapping of hydrogen at defects. It is shown that the trap strengths are determined mainly by the interstitial electron density, and any open structures in the lattice leads to a trap, with the vacancies and voids being the strongest traps. It is also found theoretically and experimentally that up to six hydrogen atoms can be accomodated in a vacancy, and the change in trap strengths with occupancy has been determined. Recent results for the trapping of deuterium to defects in Pd are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01059239
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Search for cold fusion in plasma-charged Pd-D and Ti-D systems (1990)
    Springer
    Journal of fusion energy 9 (1990), S. 315-317 
    Details
    ISSN: 1572-9591
    Keywords: Pd-D ; Ti-D ; DC-glow-discharge ; cold fusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract To investigate whether cold fusion of deuterium (D) can occur in solid Pd and Ti as proposed recently, we have searched for the D-D fusion reaction in plasma-charged Pd-D and Ti-D. In a small reaction cell, a DC glow-discharge was established in a deuterium gas between two electrodes, with a Pd or Ti sample placed on the cathode. A thin (50 Å) Cu film was evaporated on the surface of the Pd samples to establish a barrier reducing the escape of D from the samples. Neutrons were detected with a liquid scintillator, and conventional pulse-shape discrimination technique was employed to distinguish gamma counts from neutron counts. No indication for a neutron count rate in excess of the natural background level was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01059249
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    Paper (German National Licenses)
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