Quantum-state-selective decay spectroscopy of 213Ra

Ch Lorenz, L. G. Sarmiento, D. Rudolph, D. E. Ward, M Block, F. P. Heßberger, D. Ackermann, L. L. Andersson, Manuel Lazo Cortés, C. Droese, M. Dworschak, M. Eibach, U. Forsberg, P. Golubev, R. Hoischen, I Kojouharov, J. Khuyagbaatar, D. Nesterenko, I. Ragnarsson, H SchaffnerL. Schweikhard, S. Stolze, J. Wenzl

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

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An experimental scheme combining the mass resolving power of a Penning trap with contemporary decay spectroscopy has been established at GSI Darmstadt. The Universal Linear Accelerator (UNILAC) at GSI Darmstadt provided a 48Ca beam impinging on a thin 170Er target foil. Subsequent to velocity filtering of reaction products in the Separator for Heavy Ion reaction Products (SHIP), the nuclear ground state of the 5n evaporation channel 213Ra was mass-selected in SHIPTRAP, and the 213Ra ions were finally transferred into an array of silicon strip detectors surrounded by large composite germanium detectors. Based on comprehensive Geant4 simulations and supported by theoretical calculations, the spectroscopic results call for a revision of the decay path of 213Ra, thereby exemplifying the potential of a combination of a mass-selective Penning trap device with a dedicated nuclear decay station and contemporary Geant4 simulations.

Antal sidor12
TidskriftPhysical Review C
StatusPublished - 2017 sep. 18

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