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相关论文: Photon data shed new light upon the GDR spreading …

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Proton capture reaction is an important process concerning the astrophysical origin of the elements. In present work, we focus on giant dipole resonance (GDR) in proton capture reactions, such as $^{11}$B$(p, \gamma)^{12}$C, $^{27}$Al$(p,…

核理论 · 物理学 2017-06-06 K. Wang , Y. G. Ma , G. Q. Zhang , X. G. Cao , W. B. He , W. Q. Shen

We study the correlation between the neutron skin development and the low-energy dipole response associated with the pygmy dipole resonance (PDR) in connection with the properties of symmetry energy. We perform our investigation within a…

核理论 · 物理学 2015-06-16 V. Baran , M. Colonna , M. Di Toro , A. Croitoru , D. Dumitru

The strength distributions of the Isoscalar Giant Monopole Resonance (ISGMR) and Isoscalar Giant Quadrupole Resonance (ISGQR) in 142,146-150Nd have been determined via inelastic alpha-particle scattering with the Grand Raiden (GR)…

The centroid, width and percentage of energy weighted sum rule of dipole resonances can be strongly affected by dynamical fluctuations and static deformations of the nuclear surface, deformations and fluctuations which, in turn, depend on…

核理论 · 物理学 2019-09-04 R. A. Broglia , F. Barranco , A. Idini , G. Potel , E. Vigezzi

We carry out a model independent study of resonant photon scattering off dark matter (DM) particles. The DM particle chi_1 can feature an electric or magnetic transition dipole moment which couples it with photons and a heavier neutral…

天体物理学 · 物理学 2008-11-26 Stefano Profumo , Kris Sigurdson

We propose new Transverse Momentum Dependent (TMD) gluon densities in nuclei. Our method is based on a combination of the color dipole scattering formalism, within which we interpret the nuclear deep inelastic structure functions…

高能物理 - 唯象学 · 物理学 2025-05-06 A. V. Lipatov , G. I. Lykasov , M. A. Malyshev

The equilibration of macroscopic degrees of freedom during the fusion of heavy nuclei, like the charge and the shape, are studied in the Time-Dependent Hartree-Fock theory. The pre-equilibrium Giant Dipole Resonance (GDR) is used to probe…

核理论 · 物理学 2008-11-26 Cédric Simenel , Philippe Chomaz , Gilles De France

The low-lying dipole and quadrupole states in neutron rich nuclei, are studied within the fully self-consistent relativistic quasiparticle random-phase approximation (RQRPA), formulated in the canonical basis of the Relativistic…

核理论 · 物理学 2009-11-10 N. Paar , T. Niksic , D. Vretenar , P. Ring

Gamma ($\gamma$) decay shapes the synthesis of heavy elements in neutron-rich nuclear environments of neutron star mergers, supplying the Universe with heavy elements. The low-energy pygmy dipole resonance (PDR) influences nuclear reaction…

The pygmy dipole resonance (PDR) at the low-lying tail of the giant dipole resonance (GDR) is an interesting research subject as it carries important information about the nuclear surface with mixed isoscalar and isovector vibrations in $N…

核理论 · 物理学 2025-04-09 L. Tan Phuc , N. Dinh Dang , R. Li , N. Quang Hung

The static dipole polarizability, $\alpha_{\rm D}$, in ${}^{208}$Pb has been recently measured with high-resolution via proton inelastic scattering at the Research Center for Nuclear Physics (RCNP). This observable is thought to be…

We study low-lying multipole strength in neutron-halo nuclei. The strength depends only on a few low-energy constants: the neutron separation energy, the asymptotic normalization coefficient of the bound state wave function, and the…

核理论 · 物理学 2007-05-23 S. Typel , G. Baur

We carry out a systematic study of electric dipole mode (E1) for neutron-rich isotopes from nickel (Z=28) to tin (Z=50) using a time-dependent mean-field theory. Our time-dependent scheme is the canonical-basis time-dependent…

核理论 · 物理学 2015-06-12 Shuichiro Ebata , Takashi Nakatsukasa , Tsunenori Inakura

Cross sections for neutron capture in the range of unresolved resonances are predicted simultaneously to level distances at the neutron threshold for more than 100 spin-0 target nuclei with A >70. Assuming triaxiality in nearly all these…

核实验 · 物理学 2014-04-18 Eckart Grosse , Arnd R. Junghans , Ralph Massarczyk

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 $A$ spanning the whole mass table. It is concluded that the…

核理论 · 物理学 2009-11-06 V. Yu. Ponomarev , P. F. Bortignon , R. A. Broglia , V. V. Voronov

We apply the dipole formalism that has been developed to describe low-x deep inelastic scattering to the case of ultra-high energy real photons with nucleon and nuclear targets. We hope that there will be future modeling applications in…

高能物理 - 唯象学 · 物理学 2007-05-23 T. C. Rogers M. I. Strikman

Dipole excitations below the neutron threshold in neutron rich Sn isotopes are studied theoretically in the Quasiparticle-Phonon Model with HFB single particle input. Of special interest are the low-lying two-phonon 1- states and the Pygmy…

核理论 · 物理学 2014-11-18 N. Tsoneva , H. Lenske , Ch. Stoyanov

We consider the propagation and damping of isovector excitations in heated nuclear matter within the Landau Fermi-liquid theory. Results obtained for nuclear matter are applied to calculate the Giant Dipole Resonance (GDR) at finite…

核理论 · 物理学 2011-01-25 M. Di Toro , V. M. Kolomietz , A. B. Larionov

The influence of giant dipole resonance (GDR) induced quadrupole moment on GDR width at low temperatures is investigated experimentally by measuring GDR width systematically in the unexplored temperature range $T$=0.8-1.5 MeV, for the first…

The pygmy dipole resonance (PDR) is studied in various medium-heavy nuclei by using a Gogny interaction in a self-consistent Hartree-Fock plus Random Phase Approximation method. We compare the details of the PDR structure with those of the…

核理论 · 物理学 2015-06-15 G. Co' , V. De Donno , M. Anguiano , A. M. Lallena