J. Dobeš
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View article: Reliable and Efficient Procedure for Steady-State Analysis of Nonautonomous and Autonomous Systems
Reliable and Efficient Procedure for Steady-State Analysis of Nonautonomous and Autonomous Systems Open
The majority of contemporary design tools do not still contain steady-state algorithms, especially for the autonomous systems. This is mainly caused by insufficient accuracy of the algorithm for numerical integration, but also by unreliabl…
View article: The NPI cyclotron-based fast neutron facility
The NPI cyclotron-based fast neutron facility Open
For validating activation cross-section data in the energy range relevant to IFMIF (International Fusion Material Irradiation Facility), the fast neutron sources were developed utilizing the NPI variable-energy cyclotron U-120M. Novel conc…
View article: Thermodynamic analogy for quantum phase transitions at zero temperature
Thermodynamic analogy for quantum phase transitions at zero temperature Open
We propose a relationship between thermodynamic phase transitions and ground-state quantum phase transitions in systems with variable Hamiltonian parameters. It is based on a link between zeros of the canonical partition function at comple…
View article: On Probabilities of E2 Transitions between Positive-Parity States in ^160Dy Nucleus
On Probabilities of E2 Transitions between Positive-Parity States in ^160Dy Nucleus Open
Reduced probabilities B(E2) of γtransitions between states of positive parity in the ^160Dy nucleus are calculated within the framework of the interacting boson model (IBM-1). The results are compared with the experimental data.
View article: Properties of Excited States in the ^{160}Dy Nucleus
Properties of Excited States in the ^{160}Dy Nucleus Open
Positive-parity levels and 16 rotational bands are theoretically analyzed on the basis of phenomenological models of the atomic nucleus with the use of new experimental data on excited states in the ^{160}Dy nucleus recently gained in the …
View article: Measurement of $\gamma\gamma$-coincidences and $^{152}Tb \to ^{152}Gd$ Decay Scheme
Measurement of $\gamma\gamma$-coincidences and $^{152}Tb \to ^{152}Gd$ Decay Scheme Open
On the basis of \\gamma\\gammacoincidences recorded with two HPGedetectors, 242 transitions were placed into the ^{152}Tb\\to^{152}Gd decay scheme, 131 of them for the first time. Also, 46 new levels were introduced for the first time (out…
View article: Boson Realization of the SU(4) Model of High-Temperature Superconductivity
Boson Realization of the SU(4) Model of High-Temperature Superconductivity Open
The SU(4) algebraic model of high-temperature superconductivity is studied employing the boson mapping techniques. The bosonization of the model enables us to get exact numerical solution of the model. The order parameters are discussed. T…
View article: Boson mappings and four-particle correlations in algebraic neutron-proton pairing models
Boson mappings and four-particle correlations in algebraic neutron-proton pairing models Open
Neutron-proton pairing correlations are studied within the context of two solvable models, one based on the algebra SO(5) and the other on the algebra SO(8). Boson-mapping techniques are applied to these models and shown to provide a conve…