Theoretical study of elastic electron scattering off stable and exotic nuclei

Journal Article · Wed Oct 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.044332· OSTI ID:21192311

Roca-Maza, X; Centelles, M; Salvat, F; Vinas, X ^[1]

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1. Departament d'Estructura i Constituents de la Materia and Institut de Ciencies del Cosmos, Facultat de Fisica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona (Spain)

Results for elastic electron scattering by nuclei, calculated with charge densities of Skyrme forces and covariant effective Lagrangians that accurately describe nuclear ground states, are compared against experiment in stable isotopes. Dirac partial-wave calculations are performed with an adapted version of the ELSEPA package. Motivated by the fact that studies of electron scattering off exotic nuclei are intended in future facilities in the commissioned GSI and RIKEN upgrades, we survey the theoretical predictions from neutron-deficient to neutron-rich isotopes in the tin and calcium isotopic chains. The charge densities of a covariant interaction that describes the low-energy electromagnetic structure of the nucleon within the Lagrangian of the theory are used to this end. The study is restricted to medium- and heavy-mass nuclei because the charge densities are computed in mean-field approach. Because the experimental analysis of scattering data commonly involves parameterized charge densities, as a surrogate exercise for the yet unexplored exotic nuclei, we fit our calculated mean-field densities with Helm model distributions. This procedure turns out to be helpful to study the neutron-number variation of the scattering observables and allows us to identify correlations of potential interest among some of these observables within the isotopic chains.

• OSTI ID: 21192311
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM ISOTOPES
CHARGE DENSITY
CORRELATIONS
DENSITY
ELASTIC SCATTERING
ELECTRON BEAMS
ELECTRONS
FORECASTING
GROUND STATES
HEAVY NUCLEI
INTERACTIONS
LAGRANGIAN FUNCTION
MEAN-FIELD THEORY
NEUTRON-RICH ISOTOPES
NEUTRONS
PARTIAL WAVES
SIMULATION
SKYRME POTENTIAL
STABLE ISOTOPES
TIN ISOTOPES