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  • 1
    Electronic Resource
    Electronic Resource
    Real and imaginary components of the alternating current magnetic susceptibility of RAl2 (R=Gd, Dy, and Er) in the ferromagnetic region (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 90 (2001), S. 6255-6262 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The real (χac′) and imaginary (χac″) components of the ac magnetic susceptibility of the polycrystalline GdAl2, DyAl2, and ErAl2 have been measured as functions of temperature, ac and bias dc magnetic field amplitude, and ac magnetic field frequency. Both χac′ and χac″ of the ferromagnetic DyAl2 and ErAl2 are strongly dependent on the ac magnetic field parameters, especially when compared with those of the ferromagnetic GdAl2. The observed behavior of the ac magnetic susceptibility is determined mainly by the domain dynamics, rather than by a change of the exchange interactions below Curie temperature. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1415056
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  • 2
    Electronic Resource
    Electronic Resource
    Collision integrals for the interaction of the ions of nitrogen and oxygen in a plasma at high temperatures and pressures (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 386-391 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The corrections to the transport cross sections and collision integrals for Coulomb interactions arising from the application of realistic interaction energies of the ions of nitrogen and oxygen have been investigated. Accurate potential energy curves from an ab initio electronic structure calculation and a semiclassical description of the scattering are used to determine the difference between the cross sections for the real interaction forces and a Coulomb force for large values of the Debye shielding parameter. Graphs of the correction to the diffusion and viscosity collision integrals are presented for temperatures from about 10 000 K to 150 000 K. This correction can be combined with tabulations of the collision integrals for shielded Coulomb potentials to determine the contribution of N+–N+, N+–O+, and O+–O+ interactions to the transport properties of high-temperature air. Analytical forms have been fitted to the calculated results to assist this application.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860288
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  • 3
    Electronic Resource
    Electronic Resource
    Theoretical study of hydrogen and nitrogen interactions: N–H transport cross sections and collision integrals (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 97 (1992), S. 5578-5585 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Potential energy curves have been calculated for the X 3Σ− and 5Σ− states of NH using a complete-active-space self-consistent-field/multireference configuration-interaction procedure and extensive Gaussian basis sets. An accurate dipole moment function is computed for the X 3Σ− state. Transport cross sections have been calculated for the collisions of hydrogen and nitrogen atoms in their ground states. The mean transport cross sections are tabulated for collision energies in the range 0.0001–1 Eh; the mean collision integrals are listed for temperatures between 100 and 100 000 K. The ab initio energies for the 5Σ− state of NH are found to be consistent with the results of correlation studies and agree well with the prediction from combining relations using the energies of the highest spin states of H2 and N2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.463765
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