Gießen 2007 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 4: Kernphysik/Spektroskopie

HK 4.5: Vortrag

Montag, 12. März 2007, 19:00–19:15, D

The band structure of ¹⁰Be. — •Hans-Gerhard Bohlen¹, Tatiana Dorsch¹, Tzanka Kokalova¹, Wolfram von Oertzen^1,2, Christian Schulz¹, and Carl Wheldon¹ — ¹Hahn-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 J^π= 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.