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  • Springer  (217)
  • Springer Nature  (8)
  • American Institute of Physics (AIP)  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Investigation of the characteristic energy losses of platinum (111) (1974)
    Springer
    Applied physics 3 (1974), S. 135-140 
    Details
    ISSN: 1432-0630
    Keywords: Characteristic energy losses ; Platinum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract With the help of a combined LEED- and Auger-investigation, the surface of a platinum (111) crystal was cleaned first. Then, the spectrum of the characteristic energy losses for both contaminated and cleaned surfaces is studied. On the cleaned surface the following losses were found: ΔE 1=7.4 eV, ΔE 2=13.5 eV, ΔE 3=24.8 eV, ΔE 4=31.8 eV, ΔE 5=45.1 eV, ΔE 6=54.1 eV, ΔE 7=71.2 eV. The present results are compared with the measurement of other investigators. In particular, in good agreement with optical measurements we identify ΔE 1 and ΔE 2 as interband transitions, and ΔE 3 and ΔE 4 as surface and volume plasma loss, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00884411
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  • 2
    Electronic Resource
    Electronic Resource
    A Markov dilation of a non-quasifree Bloch evolution (1983)
    Springer
    Communications in mathematical physics 90 (1983), S. 251-262 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We construct a new minimal dilation of a dynamical system governed by a Bloch equation. In contrast to a dilation of the same dynamical system recently obtained by Varilly [13] our dilation satisfies a Markov property. This presents the first example of a Markov dilation for a non-commutative dynamical system which is not equivalent to a quasifree evolution. Furthermore the dilation turns out to be a generalizedK-system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01205506
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  • 3
    Electronic Resource
    Electronic Resource
    Behaviour of auroras during the Spörer minimum (1450-1550) (1994)
    Springer
    Annales geophysicae 12 (1994), S. 808-809 
    Details
    ISSN: 0992-7689
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract It is shown that such data that exist on auroral activity in the period between 1450 and 1550 do not provide conclusive evidence that some authors have claimed for the existence of the so-called “Spörer minimum” in solar activity during this interval.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-994-0808-7
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  • 4
    Electronic Resource
    Electronic Resource
    Oxygen-containing radiation defects in Si1−x Gex (2000)
    Springer
    Semiconductors 34 (2000), S. 989-993 
    Details
    ISSN: 1063-7826
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The processes of formation and annealing of radiation defects in Si1−x Gex samples irradiated with 4-MeV electrons were studied. It is shown that, in the range of Ge contents of 3.5–15 at. %, a reduction in the efficiency of formation of oxygen-containing defects (VO and VO2) compared to that in silicon is observed. The existence of three types of VO centers, perturbed and unperturbed by neighboring Ge atoms, is detected in Si1−x Gex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1309399
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  • 5
    Electronic Resource
    Electronic Resource
    Energy dissipation in matrix-isolated silver atoms: A time-resolved fluorescence study (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 3434-3440 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The fluorescence from optically excited Ag atoms in Ar, Kr, and Xe matrices has been investigated in a time-resolved synchrotron-radiation study. A detailed energy dissipation model could be established from a systematic analysis of rise and decay times of all the observed fluorescence bands after pulsed excitation into the Ag (4d105p)2P1/2,3/2 levels, and by setting time windows between the excitation pulses in emission and emission-yield spectroscopy. Although the overall wavelength dependence of the decay time follows the λ3 law, the decay time is independent of λ within a given emission band. Finally, the role of energy transfer between Ag atoms and dimers for the evaluation of decay times is briefly addressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.453892
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  • 6
    Electronic Resource
    Electronic Resource
    The optical spectra of matrix-isolated Znn (n≤6) (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 1147-1151 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The optical properties of small Zn clusters, especially of Zn2 and Zn3, isolated in neon have been studied over a wide photon energy range by absorption, emission, and photoelectron spectroscopy. By employing emission yield spectroscopy the optical transitions of the dimer and the trimer could be unequivocally distinguished from those of higher clusters in the matrix. For Zn2, the experimental data compare reasonably well with calculations found in the literature. However, the ground state, which is usually calculated to be nonbinding, is found to be bound. The main absorption bands of at least three more Zn clusters, tentatively assigned to Zn4–Zn6, have been derived from the concomitant growth of bands in a systematic concentration study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.452258
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  • 7
    Electronic Resource
    Electronic Resource
    The electronic spectra of matrix-isolated nickel atoms: The coexistence of the 3D3 and 3F4 ground states in Ar, Kr, and Xe (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 1623-1630 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The electronic spectra of nickel atoms isolated in matrices of the four noble gases have been assigned in considerable detail. The associated experimental and theoretical study has unequivocally revealed that nickel atoms can simultaneously exist in two electronic ground states, 3d94s1:3D3 and 3d84s2:3F4, in argon, krypton, and xenon matrices where they also occupy at least three different trapping sites. In neon they appear to exist in one site and one state, 3d84s2:3F4, only. In argon, krypton, and xenon matrices the 3D3 is the dominant ground state. Some sites occupied by atoms in the 3F4 ground state can be annealed away, but others are found to be stable to this procedure. The effects of the matrix upon the guest atoms are briefly discussed. It is interesting that only one possible case of band splitting can be identified in the spectra though the observed blue shifts are of the usual magnitude.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448394
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  • 8
    Electronic Resource
    Electronic Resource
    The optical spectra of matrix-isolated palladium–nitrogen complexes: An investigation by absorption, emission, and photoelectron spectroscopy (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 1348-1354 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The optical spectra of palladium in neon and argon matrices containing up to 100% dinitrogen have been studied. Beside the known bands of isolated Pd atoms new strong bands assigned to weakly bonded Pd(N2)m (m=1, 2) complexes appear. The bands are attributed to three different types of transition. The dominant lines are essentially due to transitions localized at the Pd atom but strongly perturbed by a "crystal field'' due to the weakly bonded N2 molecules. Secondly, a vibrational progression at lower energies is assigned to a Pd to N2 charge transfer transition and thirdly, at high energies, a vibrational progression assigned to a locally excited state of an N2 molecule perturbed by weak bonding to Pd is observed. No evidence has been found for the presence of Pd(N2)3. Photoelectron spectra of the Pd(N2)m complexes in neon have been observed. The Pd 4d photoemission peak is shifted with respect to the Pd atom in Ne by ∼1.1 eV to higher binding energies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451222
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  • 9
    Electronic Resource
    Electronic Resource
    Hot electron relaxation dynamics in ZnSe (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 71 (1997), S. 1089-1091 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The ultrafast relaxation dynamics of hot electrons, initially photoexcited with an excess energy of 300 meV, are monitored in a high-quality ZnSe epilayer grown on a GaAs substrate by exploiting the intrinsic interferrometric asymmetric Fabry–Perot sample structure. The results are consistent with the expected characteristic electronic LO-phonon emission time of 40–50 fs and provide evidence for the influence of the "hot phonon effect"(or "LO-phonon bottleneck") on the electron cooling dynamics at carrier densities above ∼3×1017 cm−3. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.119736
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  • 10
    Electronic Resource
    Electronic Resource
    Aurorae during the Maunder Minimum (1988)
    Springer
    Meteorology and atmospheric physics 38 (1988), S. 246-251 
    Details
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Summary Based on a comprehensive review of scientific sources from the 17th and 18th century, a new table of auroras for the years 1645–1705 is presented. Comparison of these data with long-time German recordings (latitude 50 to 55 N) demonstrates that the assumption of the Maunder Minimum is not confirmed by the data of the auroras.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01054577
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