Benchmarking the PreSPEC@GSI experiment for Coulex-multipolarimetry on the π(p_3/2) → π(p_1/2) spin-flip transition in ⁸⁵Br

Summary, in English

A first performance test of the Coulomb excitation multipolarimetry (Coulex-multipolarimetry) method is presented. It is based on a ⁸⁵Br πp_3/2 → πp_1/2 spin-flip experiment performed as part of the PreSPEC-AGATA campaign at the GSI Helmholtzzentrum für Schwerionenforschung (GSI). Via determination of background levels around the expected ⁸⁵Br excitations as well as measured ¹⁹⁷Au excitations, an upper limit for the M1 transition strength of the 1/2^- → 3/2^- g.s. transition in ⁸⁵Br and a lower beam time limit for upcoming experimental campaigns utilizing Coulex-multipolarimetry have been inferred. The impact of the use of AGATA in its anticipated 1π configuration on these estimates is deduced via Geant4 simulations.

• Author: P. Napiralla; C. Fahlander; P. Golubev; N. Lalović; D. Rudolph; L. G. Sarmiento; O. Wieland
• Department/s: Nuclear physics
• Publishing year: 2020-05-25
• Language: English
• Publication/Series: European Physical Journal A. Hadrons and Nuclei
• Volume: 56
• Issue: 5
• Links: http://dx.doi.org/10.1140/epja/s10050-020-00148-2
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Keywords: AGATA spectrometer; PreSPEC-AGATA; relativistic Coulomb excitation
• Status: Published
• Project: Nuclear Structure at the Limits: Isotope-selective Spectroscopy; FAIR-NUSTAR: HISPEC-DESPEC experiment & Super-FRS contributions
• ISBN/ISSN/Other: ISSN: 1434-601X