Darmstadt 2008 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Postersitzung

HK 34.104: Poster

Thursday, March 13, 2008, 14:00–16:00, Poster C3

Electron scattering off Rare Isotopes - The ELISe experiment at FAIR — •Haik Simon for the ELISe collaboration — Gesellschaft für Schwerionenforschung mbH, Planckstr. 1, D-64291 Darmstadt, Germany

The international accelerator facility FAIR at the GSI laboratory at Darmstadt will provide intense, high-quality secondary beams of ions and antiprotons. The basic features of the facility are described in the baseline technical report. The ELISe experiment at FAIR aims for implementing electron scattering off exotic nuclei in colliding beam kinematics. These studies will allow for the first time to use the leptonic probe to study the ground state properties and excitation modes of radioactive, short lived, bare ions, and to analyze the excitation process and target like (decay) products independently. Elastic and inelastic electron scattering are considered being bench-mark reactions in nuclear structure investigations as the well-understood interaction allows reliable and virtually model-independent extraction of (transition) charge and current densities by means of form-factor measurements.

The desing of the very demanding ELISe detector systems aiming for a coincident detection of decay scattered electrons, decay particles and reaction fragments will be presented. Simulation calculations for the beam-beam kinematics and the resulting high selectivity for measuring the excitation and the decays of nuclear modes from threshold up into the continuum will be shown.