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Due to technical work, the interlibrary loan service wont be available from March 28th until presumably April 3rd.
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• 2000-2004  (1)
• 1970-1974  (2)
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• 1
Electronic Resource
Springer
The European physical journal 240 (1970), S. 217-232
ISSN: 1434-601X
Source: Springer Online Journal Archives 1860-2000
Topics: Physics
Notes: Abstract The3He-elastic scattering and the (3He,t)-reactions on10B,11B and13C were studied. Excitation functions for the reactions10B(3He,t)10C and11B(3He,t)11C were measured at incident energies between 11 and 17 MeV. All angular distributions were taken at 14 MeV3He-energy. From an optical model analysis of the3He-elastic scattering data the parameters of the optical potentials were determined. Best fits were obtained using surface peaked potentials. The (3He,t)-reactions were interpreted in terms of a microscopic model, which, in general, gave a good account of the data. Corrections due to nonlocality effects were included in the calculations. A satisfactory agreement of the predicted and the measured cross sections required an effective nucleon-nucleon interaction of the Yukawa form (α−1=1.2 fm). Using a Serber exchange mixture the isospindependent- and the spin-isopin-dependent strength parameters of the potential were deduced to beVτ=21.4±2.3 MeV andV σ τ=19.5 ± 2.7 MeV, respectively.
Type of Medium: Electronic Resource
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• 2
Electronic Resource
Springer
The European physical journal 16 (2000), S. 519-525
ISSN: 1434-6052
Source: Springer Online Journal Archives 1860-2000
Topics: Physics
Notes: Abstract. We consider the charmonium production in the thermalized hadronic medium created in ultrarelativistic heavy ion collisions at LHC energy. The calculations for secondary $J/\psi$ and $\psi^{\prime}$ production by $D\bar D$ annihilation are performed within a kinetic model taking into account the space-time evolution of a longitudinally and transversely expanding medium. We show that secondary charmonium production appears almost entirely during the mixed phase, and that it is very sensitive to the charmonium dissociation cross section with co-moving hadrons. Within the most likely scenario for the dissociation cross section of the $J/\psi$ mesons their regeneration in the hadronic medium will be negligible. The secondary production of $\psi^{\prime}$ mesons however, due to their large cross section above the threshold, can substantially exceed the primary yield.
Type of Medium: Electronic Resource
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• 3
Electronic Resource
Springer
The European physical journal 269 (1974), S. 339-345
ISSN: 1434-601X
Source: Springer Online Journal Archives 1860-2000
Topics: Physics
Notes: Abstract The semiclassical interpretation of heavy ion reactions is discussed. It is found that deflection to negative angles is inconsistent with optical model calculations. Due to the uncertainty principle trajectories are not well defined if the reaction is localized at the nuclear surface. It is, therefore, suggested that quantum diffraction is the dominating physical process for oscillating heavy ion transfer reactions.
Type of Medium: Electronic Resource
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