1 - 10 of 53 articles
Heights of (static) spontaneous-fission barriers of heaviest nuclei are calculated within a macroscopic—microscopic approach. Even—even nuclei with proton numbers Z = 96–120 are considered.
In the elastic angular distributions of the systems composed of tightly bound α-nuclei, 12C+12C, 16O+16O and 16O+12C, the higher-order Airy minima are observed in the energy region between 5 and 10 MeV per nucleon. The obtained optical potentials are deeply attractive and with incomplete...
We measured for the first time the α decay of 114Ba. The results are discussed in comparison with theoretical predictions.
He and Be ternary fission processes of 252Cf have been studied in two experiments with the Gammasphere detector array with light charged particle detectors surrounding the source. From α-γ double gated spectra, neutron multiplicity distributions were determined for related α ternary fission...
An algebraic vibron model for two- and three-cluster nuclear molecules is presented, where all clusters are deformed. It is shown that if the clusters are deformed a minimum can be obtained for r ≠ 0, even in the relative vibrational limit U
(4) ⊃ U
(3) for the case of two clusters, and U...
Progress in the experimental techniques used to investigate superdeformed fission isomers in the actinides allowed for detailed spectroscopic results of collective properties as well as for the identification of the rotational structure of multiphonon vibrational excitations. A novel approach...
Recent particle—particle—γ coincident measurements on a 28Si+28Si resonance have suggested “vanishing spin alignments”. New analyses of the spin alignments with a molecular model are presented. It is clarified that due to a triaxial deformation of the total system a wobbling mode (K-mixing)...
The structure of strangeness S = −2 nuclei is discussed with the emphasis on the structure change due to the Λ particles and the hyperon mixing in the ground states due to the ΛΛ-ΞN-∑∑(-H) coupling.
A cluster model gives a satisfactory reproduction of normal deformed (ND) ground state bands in a wide range of even-even nuclei. We show here that the fractional change of the transition energies in two bands is closely related to the fractional change in the corresponding reduced masses. We...
The concept of the “transient effect” is examined in respect of a “mean first passage time”. It is demmonstrated that the time the fissioning system stays inside the barrier is much larger than suggested by the transient time, and that no enhancement of emission of neutrons over that given by...
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