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  • 1985-1989  (2)
  • 23.90.+w  (1)
  • 25.70.Cd  (1)
  • Acid-base balance
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Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Groundstate proton radioactivity of nuclei in the tin region (1987)
    Springer
    The European physical journal 326 (1987), S. 107-119 
    Details
    ISSN: 1434-601X
    Keywords: 23.90.+w ; 27.60.+j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Proton radioactivities with decay energies of (0.98±0.08) MeV and (0.83±0.08) MeV were produced by the fusion reactions58Ni+58Ni→116Ba ⋆ and58Ni+54Fe→112Xe ⋆, and their halflives were measured to be (33±7) μs and (109±17) μs, respectively. The intensities of the lines correspond to production cross sections of about 30 μb and 40 μb. The two activities are assigned to the direct proton decay of113Cs and109I. The measured halflives are compared with values calculated ford 5/2 andg 7/2 groundstates of109I and113Cs and spectroscopic factors are deduced for the decays. An extensive search for the proton decay of105Sb, produced in the reaction50Cr(58Ni,p2 n)105Sb, had a negative result, excluding decay energies between 0.5 MeV and 1.5 MeV for halflives between 10 ns and 5 s.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294577
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Positron lines from subcritical heavy ion-atom collisions (1987)
    Springer
    The European physical journal 328 (1987), S. 129-145 
    Details
    ISSN: 1434-601X
    Keywords: 14.60.Cd ; 25.70.Cd ; 25.70.Ef
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Positron lines were observed in heavy ion-atom collisions at bombarding energies close to the Coulomb barrier in subcritical systems with the sum of the atomic numbers of the colliding nucleiZ u =Z 1+Z 2 being smaller thanZ u =172. Each collision system, studied,208Pb +208Pb(Zu=164),238U+181Ta(Zu=165), and238Au(Zu=171), exhibits the emission of two positron lines withZ u -independent c.m. energies of ∼ 258 keV and ∼ 340 keV, and with widths of about 30 keV, superimposed on continuous positron spectra from nuclear pair decay and pair emission induced by the time changing Coulomb field of the collision. The production cross section of thee +-lines rises with a high power ofZ u (ocZ u 22), which is comparable to theZ u 20-dependence for the collision induced positrons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290655
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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