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  • 1990-1994  (2)
  • 1970-1974  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    On the theory of stripping reactions into the continuum (1974)
    Springer
    The European physical journal 267 (1974), S. 103-109 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A formulation of stripping reactions into the continuum is given taking the(d, p)-reaction as a specific example. We use the DWBA and the assumption that contributions from the nuclear interior are negligible. Under these assumptions we show that the cross section can be split into a “distortion matrix element” and a term depending on the neutron target interaction only through the phase shifts of the corresponding elastic neutron scattering. The interference with the “pure break-up” process is discussed. The connection between stripping to bound and unbound states in the limit of zero binding energy is established. A comparison with recent experimental results is given, where the “distortion matrix elements” are calculated, for the sake of simplicity, in the “Butler approximation”.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01668636
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    SCA calculations of the inner shell ionization with Dirac-Fock electronic wave functions (1994)
    Springer
    The European physical journal 29 (1994), S. 151-158 
    Details
    ISSN: 1434-6079
    Keywords: 31.70.Hg ; 34.50.Fa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The theory of inner shell ionization for arbitrary atomic shells is reviewed. Emphasis is onL- andM-shells in order to show how the proper screening formalism entering the electronic form factor affects the ionization probabilities. The radial wavefunctions in the form factor are computed as relativistic Hartree-Fock orbitals for both bound and continuum states. The continuum orbitals were evaluated in theV(N−1) potential with correct exchange. These results are then compared with the previous ones using screened hydrogen-like wavefunctions and also with the experimental data in some cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437132
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Inner-shell ionization in near-central collisions of 6.7 MeV/amu4He ions with mid-Z atoms (1992)
    Springer
    The European physical journal 23 (1992), S. 71-79 
    Details
    ISSN: 1434-6079
    Keywords: 34.50.H ; 32.20.R ; 32.70.J
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract TheKβ spectra of molybdenum, palladium and lanthanum bombarded by 6.7 MeV/amu4He ions were measured with a transmission curved crystal spectrometer.L andM satellite lines were observed and resolved. Experimental energies are compared with those calculated with a MCDF program.M -shell ionization probabilities are deduced from the measured satellite intensity ratios and compared with theoretical (SCA) predictions. The experimental values are found to be higher than the calculated ones (by a factor of 2 for La and a factor of about 4 for Mo and Pd). The influence of coupling effects, electron wave functions, electron capture, electron correlation and target activation is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01436705
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    Paper (German National Licenses)
    Fulltext
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