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  • 1985-1989  (6)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Efimov states for three 4He atoms? (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 3906-3912 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The system of three 4He atoms interacting through the intermolecular potential HFDHE2 is solved exactly within the Faddeev scheme. We find that the trimer has two bound states at E=−0.11 K and E=−0.16(−2) K, where the excited state shows the property of an Efimov state. It is overrun by the two-body fragmentation threshold for an artificially enhanced overall interaction strength. Uncertainties in the potential parameters, possibly combined with solvent effects, may allow a slightly weaker force, which supports a second Efimov state. In any case dynamical effects of the Efimov states will be the same whether it lies close to E=0 on the physical or unphysical sheet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.450912
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Elastic scattering and break-up processes in then-d system (1988)
    Springer
    Few body systems 3 (1988), S. 123-134 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A method to solve the AGS equations in momentum space is presented. The two-nucleon transition operators are generated with the new Bonn potential restricted to the states1 S 0,3 S 1-3 D 1,3 P 0,1 P 1,3 P 1,3 P 2-3 F 2,1 D 2 and3 D 2. Cross sections and analyzing powers for elastic and break-up processes are calculated at a neutron laboratory energyE n =10.3 MeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01086331
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Three-boson bound states calculated by a non-connected kernel equation (1988)
    Springer
    Few body systems 5 (1988), S. 79-88 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A non-connected kernel equation for three-boson bound states has been solved numerically. No partial-wave expansion has been used. Numerical stability is demonstrated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01351271
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Faddeev calculations with meson-exchangeN-N interactions for then-d break-up process (1988)
    Springer
    Few body systems 5 (1988), S. 89-105 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Faddeev equations for then-d break-up process have been solved rigorously for meson-exchange 2-N interactions. Kinematically complete experimental data atE n lab =13.0 MeV have been analyzed for various configurations. As a result significant discrepancies have become evident between theory and experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01079581
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Quasi-free scattering in the 3-N continuum (1989)
    Springer
    Few body systems 6 (1989), S. 79-95 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The interaction of a nucleon with the deuteron leading to break-up at the quasi-free scattering (QFS) condition is studied atE N lab =12.0, 22.7, 68.0, and 140.0 MeV. Results of rigorous Faddeev calculations and of the impulse approximation (IA) are compared at these energies for bothn-p andp-p QFS in order to study the importance of rescattering terms. For the two-nucleon interaction the Paris potential is used. It is restricted to act in two-body states with total angular momentumj≤2. Also we compare the Faddeev calculations with experimental data for the QFS cross section and analyzing powerA y and find overall agreement. The behaviour of scattering observables turns out to be different forn-p andp-p QFS. Also the energy dependence of rescattering terms is different in the two cases. For all energies studied the IA is not reliable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01080552
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Book reviews (1987)
    Springer
    Few body systems 2 (1987), S. N33 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01078978
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    Paper (German National Licenses)
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