Author:
Göbel Kathrin,Heil Michael,Bott Lukas,Brandenburg Leonard,Caesar Christoph,Deuter Isabell,Grein Alexander,Keliç-Heil Aleksandra,Körper Daniel,Löher Bastian,Reifarth René,Savran Deniz,Schulte Hendrik,Simon Haik,Törnqvist Hans,Almusidi Tahani,Álvarez-Pol Héctor,Atkins Liam,Aumann Thomas,Bemmerer Daniel,Benlliure José,Boretzky Konstanze,Brückner Benjamin,Eiras Pablo Cabanelas,Casarejos Enrique,Cederkall Joakim,Chulkov Leonid,Cortina-Gil Dolores,Danilov rey,Erbacher Philipp,Rodriguez Sonia Escribano,Fülöp Zsolt,Falduto Ashton,Fiebiger Stefan,Gašparić Igor,Borge Maria José Garcia,Gernhäuser Roman,Glorius Jan,Caamaño David Gonzales,Hartig Anna-Lena,Heftrich Tanja,Heggen Henning,Heine Marcel,Heinz reas,Hensel Thomas,Holl Matthias,Johansson Håkan T.,Jonson Björn,Kalantar-Nayestanaki Nasser,Kamenyero Armel,Khasawneh Kafa,Kiselev Oleg,Klenze Philipp,Kohls Marvin,Kröll Thorsten,Kresan Dmytro,Kurtulgil Deniz,Kurz Nikolaus,Langer Christoph,Lehr Christopher,Litvinov Yuri,Lorenz Enis,Morales Silvia Murillo,Nacher Enrique,Nilsson Thomas,Park Joochun,Paschalis Stefanos,Perea Angel,Petri Marina,Plag Ralf,Ponnath Lukas,Popocovski Romana,Reich Markus,Rhee Han-Bum,Sanchez Jose Luis Rodriguez,Rossi Dominic,Scheit Heiko,Schmidt Konrad,Slavkovská Zuzana,Starostin Viktor,Storck Sonja,Sürder Christian,Tanaka Junki,Tengblad Olof,Thomas Benedikt,Typel Stefan,Varga László,Volk Klaus,Volknandt Meiko,Wagner Vadim,Wamers Felix,Weigand Mario,Zanetti Lorenzo
Abstract
Abstract
We measured the Coulomb dissociation of 16O into 4He and 12C at the R3B setup in a first campaign within FAIR Phase 0 at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt. The goal was to improve the accuracy of the experimental data for the 12C(α,γ)16O fusion reaction and to reach lower center-ofmass energies than measured so far.
The experiment required beam intensities of 109 16O ions per second at an energy of 500 MeV/nucleon. The rare case of Coulomb breakup into 12C and 4He posed another challenge: The magnetic rigidities of the particles are so close because of the same mass-to-charge-number ratio A/Z = 2 for 16O, 12C and 4He. Hence, radical changes of the R3B setup were necessary. All detectors had slits to allow the passage of the unreacted 16O ions, while 4He and 12C would hit the detectors’ active areas depending on the scattering angle and their relative energies. We developed and built detectors based on organic scintillators to track and identify the reaction products with sufficient precision.
Subject
General Physics and Astronomy