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HK: Fachverband Hadronen und Kerne

HK 6: Nuclear Structure and Dynamics I

HK 6.5: Talk

Monday, March 16, 2009, 15:30–15:45, H-ZO 40

Benchmarking relativistic knock-out reactions with ⁴⁸Ca^* — •Sabine Schwertel — E12 Physik Department, TU München, Garching

The evolution of shell structure in neutron rich nuclei far from the valley of stability is one of the most interesting topics in modern nuclear-structure research. Knockout experiments in combination with high resolution γ-spectroscopy can be used to probe single-particle states and to test theoretical predictions.

As part of a knock-out experiment on ⁵⁶Ti at the GSI FRS a reference experiment was performed with ⁴⁸Ca primary beam to establish the method. Several detectors (TPCs, MUSIC, TOF) provided a full identification of all incoming and outgoing fragments and the measurement of the momentum transfer in the knockout-reaction on an event-by-event basis. To tag reaction channels with excited residual nuclei, the Miniball spectrometer was used.

Momentum distributions and spectroscopic factors were determined for ⁴⁷K and ⁴⁷Ca. These are compared to shell model predictions as well as to values from transfer electron scattering experiments.

^* supported by BMBF 06MT238