Dresden 2000 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
HK: Physik der Hadronen und Kerne
HK 16: Postersitzung / Kernphysik
HK 16.8: Poster
Donnerstag, 23. März 2000, 10:15–12:45, B 69
The 73Br nucleus investigated at highest rotational frequencies * — •C. Borcan1, H. Schnare1, R. Schwengner1, L. Käubler1, F. Dönau1, I. Ragnarsson2, A.V. Afanasjev2, J. Eberth3, T. Steinhardt3, O. Thelen3, M. Hausmann4, A. Jungclaus4, K.P. Lieb4, A. Algora5, G. deAngelis5, A. Gadea5, D.R. Napoli5, D. Jenkins6, R. Wadsworth6, and A. Wilson6 — 1Inst. f. Kern- und Hadronenphysik, FZ Rossendorf, 01314 Dresden — 2Lund Institute of Technology, Lund, S-221 00 Lund Sweden — 3IKP, Inst. f. Kernphysik, Uni zu Köln, 50937 Köln — 4II. Physikalisches Institut, Uni Göttingen, 37073 Göttingen — 5INFN, I-35020 Legnaro, Italy — 6York University, Y01 5DD, York, United Kingdom
We have investigated the 73Br nucleus.
High spin states in 73Br have been populated in connection with the
reaction 40Ca(40Ca,α3p), using the 185 MeV beam delivered
by the XTU Tandem accelerator of LNL Legnaro.
Coincidences of γ rays, charged particles and neutrons have been
measured using the EUROBALL III array.
Rotational bands in 73Br have been investigated
up to spins of J=65/2ℏ. One of the negative-parity bands
displays the highest to date rotational frequency ℏ w=1.85 MeV.
The bands have been interpreted in the configuration-dependent
shell-correction
approach within the cranking model. A configuration including protons
and neutrons in the fpg9/2 shells is calculated to terminate
at a non-collective γ=60∘ state and was assigned to one of
the
bands.
*Supported by the BMBF under the contract 06 DR 827.