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Gießen 2007 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 4: Kernphysik/Spektroskopie

HK 4.5: Talk

Monday, March 12, 2007, 19:00–19:15, D

The band structure of 10Be. — •Hans-Gerhard Bohlen1, Tatiana Dorsch1, Tzanka Kokalova1, Wolfram von Oertzen1,2, Christian Schulz1, and Carl Wheldon11Hahn-Meitner-Institut, Berlin — 2FU Berlin, Fachbereich Physik

The band structure of 10Be has been studied using the 12C(12C, 14O)10Be two-proton pickup reaction at 211 MeV. Spin-parity assignments have been obtained from the shapes of observed angular distributions. The phase and first maximum of the oscillatory structure is very characteristic for the spin and parity, and new assignments could be made. The state at 11.78 MeV excitation energy is identified as the 4+ member of the ground state band, and the state at 10.56 MeV is assigned Jπ= 3. The angular distribution of a peak at 9.50 MeV, which consists of several unresolved states, has been unfolded using contributions from known states at 9.56 MeV, 2+, and 9.27 MeV, 4, and from a tentatively assigned 3+ state at 9.4 MeV reported by Daito et al., (Phys. Lett. B418 (1998) 7). The latter state is considered as the second member of a K=2+ band based on the second 2+ state of 10Be. The characteristics of the different bands existing in 10Be will be discussed.

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