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  • 1980-1984  (4)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Test of 600 and 750 MeV NN matrix on elastic scattering Glauber model calculations (1980)
    Springer
    The European physical journal 294 (1980), S. 287-288 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The 600 and 750 MeV proton nucleus elastic scattering cross section and polarization calculations have been performed in the framework of the Glauber model to test the pp and pn scattering amplitudes deduced from a phase shift analysis by Bystricky, Lechanoine and Lehar. It is well known that up to now we do not possess a non-phenomenological NN scattering matrix at intermediate energies. However proton-nucleus scattering analyses are used to extract information about short range correlations1), Δ resonance2) or pion condensation presences)... etc. Most scattering calculations made at these energies have been done with phenomenological NN amplitudes having a gaussian q-dependence $$A(q) = \frac{{k\sigma }}{{4\pi }}(\alpha + i) e^{ - \beta ^2 q^2 /2} $$ and $$C(q) = \frac{{k\sigma }}{{4\pi }}iq(\alpha + i) D_e - \beta ^2 q^2 /2$$ K andσ being respectively the projectile momentum and the total pN total cross section. The parameters α, β and D are badly known and are adjusted by fitting some specific reactions as p+4He elastic scattering4). Even when these amplitudes provide good fits to the data, our understanding of the dynamics of the scattering remains obscure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01438168
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Model independent optical potential for protons at 155 MeV (1981)
    Springer
    The European physical journal 300 (1981), S. 247-248 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using the model independent procedure, 155 MeV proton optical potentials are deduced from the elastic scattering data. The nuclear interior of these potentials are less attractative than predicted by a phenomenological potentials. A comparison is done with a self consistent meson model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412300
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Search for36Cl in Stripa site groundwaters (1983)
    Springer
    The European physical journal 313 (1983), S. 243-244 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Four groundwater samples from the Stripa site have been analysed by accelerator mass spectrometry at the University of Rochester. The36Cl concentrations were found to range from 2.108 to 6.108 atoms per litre of water, whereas the modern concentration is two orders of magnitude lower. A subsurface origin seems to be the explanation of these results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01417234
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The determination of hexadecapole deformation parameters in actinide nuclei and their variation near the nuclear surface (1980)
    Springer
    The European physical journal 298 (1980), S. 37-40 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract By computing self consistently the nuclear density of238U with the Skyrme SIII effective force, the hexadecapole deformation parameter has been found to vary considerably in the nuclear surface. This suggests an explanation for some discrepancies observed betweenβ 4 parameters estimated from different inelastic scattering experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01416026
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    Paper (German National Licenses)
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