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HK: Fachverband Physik der Hadronen und Kerne

HK 18: Kernphysik / Spektroskopie

HK 18.4: Talk

Tuesday, March 13, 2007, 17:45–18:00, D

Neutron transfer reactions in Fe Isotopes^* — •Mahmoud Mahgoub¹, Andreas Bergmaier¹, Dorel Bucurescu³, Thomas Faestermann¹, Roman Gernhäuser¹, Ralf Hertenberger², Thorsten Kröll¹, Reiner Krücken¹, Alexander Lisetskiy⁴, and Hans Wirth¹ — ¹Physik-Department, TU -München — ²Sektion Physik, LMU München — ³NIPNE, Bucharest, Romania — ⁴GSI

We report on new results from the reaction ⁵⁴Fe(d,p)⁵⁵Fe using the Munich Q3D spectrograph. 13 new states have been observed, for 10 states spin values could be established for the first time and spectroscopic factors were determined for 51 states. The results are compared with large scale shell-model calculations using up to 6 particle-hole excitation of the ⁵⁶Ni core. Consequences for the N = 28 shell stability will be discussed.

In a second experiment the same reaction was performed in inverse kinematics at a beam energy of 2.5 MeV/u. the aim of the experiment was to compare spectroscopic factors obtained in such an experiment with those from normal kinematics experiments. This is relevant in order to establish the reliability of spectroscopic factors in transfer reactions using radioactive ion beams.

^* Supported by MLL and DFG under contract KR2326/1-1.