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28 papers · 2 filters
Deuteron P-Wave in Elastic Backward Proton-Deuteron Scattering
A. Yu. Illarionov, G. I. Lykasov
The elastic backward proton-deuteron scattering is analyzed within a fully covariant approach based on the invariant expansion of the reaction amplitude. The method of calculation…
The E2/M1 and C2/M1 ratios and form factors in N -> Delta transitions
L. Tiator, D. Drechsel, O. Hanstein +2
A partial wave analysis of pion photoproduction has been obtained in the framework of fixed-t dispersion relations valid from threshold up to 500 MeV. In the resonance region we ha…
Final state interaction in inclusive and exclusive quasi-elastic processes
M. Alvioli, M. A. Braun, C. Ciofi degli Atti +3
We discuss a new approach to final state interactions, that keeps explicitly into account the virtuality of the ejected nucleon in quasi-elastic scattering at very larg…
On scission configuration in ternary fission
V. G. Kartavenko, A. Sandulescu, W. Greiner
A static scission configuration in cold ternary fission has been considered in the framework of two mean field approaches. The virial theorems has been suggested to investigate cor…
On Nonlinear Evolution of Axisymmetric Nuclear Surface
V. G. Kartavenko, K. A. Gridnev, W. Greiner
We consider an uniformly charged incompressible nuclear fluid bounded by a closed surface. It is shown that an evolution of an axisymmetric surface $Γ(\bbox{r},t)\equiv σ- Σ(z,t) =…
Charge-Exchange Reaction pD->n(pp) in the Bethe-Salpeter Approach
S. M. Dorkin, L. P. Kaptari, B. Kaempfer +1
The deuteron charge - exchange reaction pD->n(pp) for the low values of momentum transfer and small excitation energies of final pp - pair is considered in the framework of Bethe -…
Photoproduction of -mesons off light nuclei
N. V. Shevchenko, V. B. Belyaev, S. A. Rakityansky +2
Photoproduction of -mesons off deuteron is studied within the Alt-Grassberger-Sandhas formalism for different parameters of interaction. The calculations revealed peaks in…
Ground state correlations and anharmonicity of vibrations
A. P. Severyukhin, V. V. Voronov, D. Karadjov
A consistent treatment of the ground state correlations beyond the random phase approximation including their influence on the pairing and phonon-phonon coupling in nuclei is prese…
Dynamical interpretation of chemical freeze-out in heavy ion collisions
V. D. Toneev, J. Cleymans, E. G. Nikonov +3
It is demonstrated that there exists a direct correlation between chemical freeze-out point and the softest point of the equation of state where the pressure divided by the energy…
Simulation of Nucleus-Nucleus Interactions in the Framework of the FRITIOF Model at the Energy of 3.3 GeV/nucleon
A. S. Galoyan, A. Polanski, V. V. Uzhinskii
The intranuclear cascade model overestimates the multiplicity of produced mesons in nucleus-nucleus interactions without taking into account meson and baryon resonance production.…
Angular Momenta of Even-Even Fragments in the Neutronless Fission of Cf
S. Misicu, A. Sandulescu, G. M. Ter-Akopian +1
The recent advent of experimental techniques in which the dynamical characteristics of fission fragments are determined more accurately, prompted us to investigate the angular mome…
Octupole deformations in actinides at high spins within the cranking Skyrme-Hartree-Fock approach
A. Tsvetkov, J. Kvasil, R. G. Nazmitdinov
The cranked Skyrme III effective Hamiltonian is applied for the analysis of the rotational dependence of the quadrupole and octupole moments in Ra, Th, and U isotopes. A comparison…
On the Strength of Spin-Isospin Transitions in A=28 Nuclei
V. A. Kuzmin, T. V. Tetereva, K. Junker
The relations between the strengths of spin-isospin transition operators extracted from direct nuclear reactions, magnetic scattering of electrons and processes of semi-leptonic we…
Tilted Rotation and Wobbling Motion in Nuclei
W. D. Heiss, R. G. Nazmitdinov
The self-consistent harmonic oscillator model including the three-dimensional cranking term is extended to describe collective excitations in the random phase approximation. It is…
Shell model description of "mixed-symmetry" states in 94Mo
A. F. Lisetskiy, N. Pietralla, C. Fransen +2
Shell model calculations have been performed for the nucleus 94Mo. The calculated excitation energies and electromagnetic properties of low-lying states are in good agreement with…
Anomalous radial expansion in central heavy-ion reactions
K. Morawetz, M. Ploszajczak, V. D. Toneev
The expansion velocity profile in central heavy-ion reactions in the Fermi energy domain is examined. The radial expansion is non-hubblean and in the surface region it scales propo…
Anharmonic properties of double giant dipole resonance
V. Yu. Ponomarev, P. F. Bortignon, R. A. Broglia +1
A systematic microscopic study of the anharmonic properties of the double giant dipole resonance (DGDR) has been carried out, for the first time, for nuclei with mass number sp…
Poincare' Covariant Current Operator and Elastic Electron-Deuteron Scattering in the Front-form Hamiltonian Dynamics
F. M. Lev, E. Pace, G. Salme`
The deuteron electromagnetic form factors, and , and the tensor polarization , are unambiguously calculated within the front-form relativistic Hamilto…
Deuteron Breakup pd\to pnp in Specific Kinematics and Short-Range NN-Interaction
Yu. N. Uzikov
Deuteron breakup processes are studied in the kinematics of backward elastic pd-scattering at law relative momenta of the NN-pair for initi…
Nucleon resonances in omega photoproduction
Yongseok Oh, Alexander I. Titov, T. -S. H. Lee
The role of the nucleon resonances () in photoproduction is investigated by using the resonance parameters predicted by Capstick and Roberts [Phys. Rev. D {\bf 46}, 2864 (…
Pion electroproduction on the nucleon and the generalized GDH sum rule
L. Tiator, D. Drechsel, S. S. Kamalov
Results of the recently developed unitary isobar model (MAID) are presented for the spin asymmetries, structure functions and relevant sum rules in the resonance region. The model…
Quadrupole shape invariants in the interacting boson model
V. Werner, N. Pietralla, P. von Brentano +2
In terms of the Interacting Boson Model, shape invariants for the ground state, formed by quadrupole moments up to sixth order, are studied in the dynamical symmetry limits and, fo…
The p(d,p)d and p(d,p)pn reactions as a tool for the study of the short range internal structure of the deuteron
V. P. Ladygin
In recent time the deuteron structure at short distances is often treated from the point of view nonnucleonic degrees of freedom. In this paper the measurements of T-odd polarizati…
Nonaxial octupole deformations in light N=Z nuclei at high spins
Takeshi Tanaka, Rashid G. Nazmitdinov, Kazuo Iwasawa
High spin states of ^{32}S$ and ^{56}Ni are investigated by means of the cranking Hartree-Fock method with the Gogny interaction without imposing a restriction on the axial reflect…