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  • 1
    Electronic Resource
    Electronic Resource
    General survey of polarization observables in deuteron electrodisintegration (2005)
    Springer
    The European physical journal 23 (2005), S. 147-190 
    Details
    ISSN: 1434-601X
    Keywords: 21.45.+v Few-body systems ; 24.70.+s Polarization phenomena in reactions ; 25.30.Fj Inelastic electron scattering to continuum ; 13.40.-f Electromagnetic processes and properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Polarization observables in inclusive and exclusive electrodisintegration of the deuteron using a polarized beam and an oriented target are systematically surveyed using the standard nonrelativistic framework of nuclear theory but with leading-order relativistic contributions included. The structure functions and the asymmetries corresponding to the various nucleon polarization components are studied in a variety of kinematic regions with respect to their sensitivity to realistic NN-potential models, to subnuclear degrees of freedom in terms of meson exchange currents, isobar configurations and to relativistic effects in different kinematical regions, serving as a benchmark for a test of present standard nuclear theory with effective degrees of freedom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/i2004-10061-5
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  • 2
    Electronic Resource
    Electronic Resource
    On the coupling of the giant multipole resonances to the surface quadrupole oscillations of nuclei (1968)
    Springer
    The European physical journal 212 (1968), S. 83-103 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Within the framework of the hydrodynamic model the exact coupling constants of the coupling of the giant multipole resonances to the surface quadrupole oscillations of nuclei are derived. The differences to former variational calculations are discussed. It is found that the coupling constants for the terms linear in the surface variables are almost the same whereas the coupling constants for the quadratic terms differ appreciably. The influence on the photon absorption and scattering cross sections of spherical nuclei is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01379899
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of final-state interaction on incoherent pion photoproduction on the deuteron in the region of the Δ-resonance (2003)
    Springer
    The European physical journal 16 (2003), S. 111-125 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 13.60.Le Meson production – 21.45.+v Few-body systems – 25.20.Lj Photoproduction reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The influence of final-state NN and πN rescattering in incoherent pion photoproduction on the deuteron has been investigated. For the elementary photoproduction operator an effective Lagrangian model is used which describes well the elementary reaction. The interactions in the final two-body subsystems are taken in separable form. While NN rescattering shows quite a significant effect, particularly strong for neutral pion production, πN rescattering is almost negligible. Inclusion of such effects leads to an improved and quite satisfactory agreement with experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/i2002-10071-3
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  • 4
    Electronic Resource
    Electronic Resource
    Das integrale Reflexionsvermögen von gebogenen Quarzkristallen für Röntgenstrahlen im Transmissionsfall (1964)
    Springer
    The European physical journal 180 (1964), S. 317-324 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Es wurde das integrale Reflexionsvermögen der (310)-Ebene eines gebogenen Quarzkristalles (Dicke 0,2 mm) im symmetrischen Laue-Fall in Abhängigkeit vom Krümmungsradius und der Wellenlänge gemessen. Krümmungsradius von 25 cm bis 200 cm; Wellenlängenbereich von 0,18 Å bis 1,27 Å. Für größere Wellenlängen nimmt das integrale Reflexionsvermögen mit abnehmendem Krümmungsradius stark zu. Im Bereich kleiner Wellenlängen ändert sich das integrale Reflexionsvermögen mit dem Krümmungsradius nicht. Das integrale Reflexionsvermögen des gebogenen Kristalls ist in allen Fällen größer als das des ebenen Kristalls, nähert sich aber diesem für kurze Wellenlängen. Das integrale Reflexionsvermögen des ebenen Kristalls wurde ebenfalls gemessen und mit der Theorie verglichen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01380546
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  • 5
    Electronic Resource
    Electronic Resource
    Relativistic effects in quasifree deuteron electrodisintegration compared to a covariant model (1994)
    Springer
    Few body systems 17 (1994), S. 91-119 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Deuteron disintegration by electrons is calculated in a covariant model for the quasifree region, where final-state interaction and two-body currents can be negiected, and is compared to a phenomenological approach in which one adds to the nonrelativistic one-body current relativistic contributions of lowest order and the kinematic wave-function boost. It is shown that ap/M-reduction of the relativistic theory contains the expressions of the phenomenological approach. The inclusion of relativistic contributions leads to a less frame-dependent description and the deviation from the covariant theory becomes small at low and medium energy and momentum transfers. Furthermore, the dependence of the nonrelativistic results on the current parametrization, i.e., Dirac-Pauli versus Sachs, is largely eliminated by inclusion of lowest-order relativistic contributions. Results are presented for form factors and structure functions and compared with experimental data for the inclusive reaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01074448
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  • 6
    Electronic Resource
    Electronic Resource
    Complete Sets of Polarization Observables in Electromagnetic Deuteron Breakup (2000)
    Springer
    Few body systems 28 (2000), S. 147-188 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract.  For deuteron photo- and electrodisintegration the selection of complete sets of polarization observables is discussed in detail by applying a recently developed new criterion for the check of completeness of a chosen set of observables. The question of ambiguities and their resolution by considering additional observables is discussed for a numerical example, for which the role of experimental uncertainties is also investigated. Furthermore, by inversion of the expressions of the observables as Hermitean forms in the t-matrix elements a bilinear term of the form can be given as a complex linear form in the observables from which an explicit solution for in terms of observables can be obtained. These can also be used to select sets of observables for the explicit representation of the t-matrix.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s006010070020
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  • 7
    Electronic Resource
    Electronic Resource
    The relativistic spin-orbit current in deuteron photodisintegration below and above π-threshold (1988)
    Springer
    Few body systems 3 (1988), S. 111-121 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that the spin-orbit current which leads to an improved description ofd(γ,p)n below π-threshold is essentially a two-body exchange effect. This is demonstrated by separation of its one-body contribution. Furthermore, above π-threshold its inclusion leads to an improved agreement with experiment, in particular for the differential cross section in the Δ-excitation region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01086330
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  • 8
    Electronic Resource
    Electronic Resource
    General formulae for polarization observables in two-body break-up of deuteron photodisintegration (1988)
    Springer
    Few body systems 4 (1988), S. 55-70 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The formal expressions of all possible polarization observables ind(γ,N)N with polarized photons and oriented deuterons are derived in terms of thet-matrix elements. Furthermore, using the multipole expansion of thet-matrix, all observables are expanded in terms of Legendre polynomials or associated functions, the coefficients of which are given as bilinear forms of the multipole moments and allow a model independent analysis of experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01076329
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  • 9
    Electronic Resource
    Electronic Resource
    Deuteron photodisintegration with the Bonn OBE potentials (1989)
    Springer
    Few body systems 7 (1989), S. 95-117 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The various OBE approximations to the recent Bonn potential are studied in deuteron photodisintegration below π-threshold. Consistent static meson-exchange currents, isobar currents, and the relativistic spin-orbit current are included. Concerning the OBEPT also the leading retardation corrections in the currents are taken into account. Comparison with experimental data is carried out in detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01087390
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  • 10
    Electronic Resource
    Electronic Resource
    Meson-retardation effects in deuteron photodisintegration below π-threshold (1989)
    Springer
    Few body systems 6 (1989), S. 117-150 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Mesor-retardation effects in photodisintegration of the deuteron below pion threshold are studied by constructing retarded one-boson-exchange potentials using time-dependent non-covariant perturbation theory. The corresponding retarded meson-exchange currents including retarded vertex currents are derived analogously by gauge-invariant minimal coupling. It is found that retardation effects in the wave functions and in the electromagnetic currents as well have a significant influence on total and differential cross sections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01089915
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