Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1995-1999  (2)
  • 1980-1984  (2)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Chemical properties of element 106 (seaborgium) (1997)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 388 (1997), S. 55-57 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The synthesis, via nuclear fusion reactions, of elements heavier than the actinides, allows one to probe the limits of the periodic table as a means of classifying the elements. In particular, deviations in the periodicity of chemical properties for the heaviest elements are predicted as a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/388055a0
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    FastA/Z equilibration and correlated nucleon exchange in damped collisions of56Fe ions with209Bi (1980)
    Springer
    The European physical journal 296 (1980), S. 141-145 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Recently published data on mass and charge distributions in interactions of56Fe with209Bi are reexamined. Both the average mass-to-charge ratio and the relationship between the variances of the mass and charge distributions were found to depend on the degree of energy damping. This was reported to present evidence for long interaction times required for charge equilibration and for the evolution of correlations in the exchange of neutrons and protons. We show that the dependence of the equilibrated mass-to-charge ratios on energy loss is the combined result of i) the mass drift in the56Fe+209Bi reaction and ii) the steep gradients of the potential energy surface which lead to a strong dependence of the mass-to-charge ratios on mass asymmetry. Also, the ratios of the variances of mass and charge distributions are shown to reflect the varying slope of the potential energy valley. It is concluded that the56Fe+209Bi data are consistent with fast charge equilibration and fully correlated nucleon exchange in agreement with the behaviour of other systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412655
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Probing sub-barrier fusion and extra-push by measuring fermium evaporation residues in different heavy ion reactions (1984)
    Springer
    The European physical journal 316 (1984), S. 291-307 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The production of fermium isotopes was attempted by complete fusion of different targets and projectiles spanning a wide range of effective entrance channel fissilities below and above the predicted threshold valuex eff thr ≃0.7. For the most asymmetric systems where fusion is expected to occur without dynamical hindrance we investigate to what extent the expected amount of sub-barrier fusion contributes to the production of fermium evaporation residues. For increasingly symmetric systems the experimental fusion barriers are found to exceed the fusion barriers predicted by the proximity formalism. The barrier heights are discussed in the framework of both the extra-push model and the surface friction model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01439902
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Prospects for the discovery of new elements (1996)
    Springer
    Journal of radioanalytical and nuclear chemistry 203 (1996), S. 283-300 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Today we know 111 chemical elements. The heaviest among the 19 man-made transuranium elements are synthesized in fusion reactions between heavy-ion projectiles and lead/bismuth-or actinide-targets. From extrapolations of known cross sections we can assume that in both approaches still heavier elements are accessible. Reactions withi lead and bismuth targets will yield higher cross sections at the picobarn level. They are best suited to synthesize new, deformed superheavy elements around the neutron-shell at N=162. Actinide-target based reactions will exhibit lower cross sections in this region but they bare the potential to produce more neutron-rich nuclei closer to the center of spherical superheavy nuclei at Z=114 and N=184. Transfer reactions are a potential source of superheavy elements which has not been fully exploited yet. Recently suggested new paths of synthesis reactions await experimental tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02041512
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...