Schematic model of the mass distribution in nuclear density isomers

Heinz, Ulrich; Stock, H.; Scheid, W.; Greiner, Walter

doi:10.1088/0305-4616/3/1/006

Cited by 10 publications

(2 citation statements)

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“…Electromagnetic excitation is also used at (ultra-) relativistic heavy ion accelerators to obtain nuclear structure information. Recent examples are the Coulomb fission studies of radioactive nuclei at GSI [144,145] and Coulomb fission of 208 Pb [146] at SPS/CERN. Due to the logarithmic rise of the crosssection with beam energy, cross-sections for the excitation of the giant dipole resonance (Weizsäcker-Williams process) at the relativistic heavy ion colliders RHIC and the forthcoming LHC(Pb-Pb) at CERN are huge [147,148,149], of the order of 100 b for heavy systems (Au-Au or Pb-Pb).…”

Section: Some Aspects Of Electromagnetic Excitation In Relativistic Hmentioning

confidence: 99%

Electromagnetic dissociation as a tool for nuclear structure and astrophysics

Baur¹,

Typel²,

Hencken³

et al. 2001

Progress in Particle and Nuclear Physics

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Coulomb dissociation is an especially simple and important reaction mechanism. Since the perturbation due to the electric field of the (target) nucleus is exactly known, firm conclusions can be drawn from such measurements. Electromagnetic matrixelements and astrophysical S-factors for radiative capture processes can be extracted from experiments. We describe the basic elements of the theory of nonrelativistic and relativistic electromagnetic excitation with heavy ions. This is contrasted to electromagnetic excitation with leptons (electrons), with their small electric charge and the absence of strong interactions. We discuss various approaches to the study of higher order electromagnetic effects and how these effects depend on the basic parameters of the experiment. The dissociation of neutron halo nuclei is studied in a zero range model using analytical methods. We also review ways how to treat nuclear interactions, show their characteristics and how to avoid them (as far as possible). We review the experimental results from a theoretical point of view. Of special interest for nuclear structure physics is the appearence of low lying electric dipole strength in neutron rich nuclei. Applications of Coulomb dissociation to some selected radiative capture reactions relevant for nuclear astrophysics are discussed. The Coulomb dissociation of 8 B is relevant for the solar neutrino problem. The potential of the method especially for future investigations of (medium) heavy exotic nuclei for nuclear structure and astrophysics is explored. We conclude that the Coulomb dissociation mechanism is theoretically well understood, the potential difficulties are identified and can be taken care of. Many interesting experiments have been done in this field and many more are expected in the future.

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Section: Some Aspects Of Electromagnetic Excitation In Relativistic Hmentioning

confidence: 99%

Electromagnetic dissociation as a tool for nuclear structure and astrophysics

Baur¹,

Typel²,

Hencken³

et al. 2001

Progress in Particle and Nuclear Physics

View full text Add to dashboard Cite

show abstract

“…In this paper a semiclassical model is developed using an empirical density functional. This approach proved quite successful in a description of the density profiles of natural nuclei [10], and, in a truncated version, was used before to describe exotic nuclei (density isomers) in [7]. The functional is minimized with respect to the neutron and proton densities under conservation of the particle numbers.…”

Section: Introductionmentioning

confidence: 99%