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Darmstadt 2008 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Kernphysik / Spektroskopie

HK 15.3: Talk

Monday, March 10, 2008, 17:15–17:30, 2G

α-Cluster states in the electron scattering* — •Maksym Chernykh1, Hans Feldmeier2, Thomas Neff2, Peter von Neumann-Cosel1, and Achim Richter11Institut für Kernphysik, Technische Universität Darmstadt, Germany — 2Gesellschaft für Schwerionenforschung (GSI), Darmstadt, Germany

The possible existence of α-cluster condensation is an intriguing question for the understanding of the nuclear structure in light nuclei. A study of the second 0+ state (Hoyle state) in 12C with high-resolution electron scattering including measurements at the S-DALINAC is presented.

Recently, an 16O(α,α ) measurement was performed [1], where evidence for a new α-condensed 0+ state at an excitation energy Ex = 13.6 ± 0.1 MeV based on a wavelet analysis of the spectra was claimed. We present an independent analysis of high-resolution electron scattering data on 16O in the relevant excitation energy region using similar wavelet techniques.

[1] T. Wakasa et al., Phys. Lett. B653 (2007) 173.

*Supported by the DFG through SFB 634.

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