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HK: Fachverband Physik der Hadronen und Kerne
HK 26: Structure and Dynamics of Nuclei VI
HK 26.4: Talk
Tuesday, March 12, 2024, 18:30–18:45, HBR 14: HS 4
Measurements of interaction cross-section of carbon isotopes (10,11,12C) at the FRS — •Rinku Prajapat for the BARB- and Super-FRS Experiment collaboration — GSI, Darmstadt, Germany — Saint Mary’s University, Halifax, Canada
The advancement of production techniques to access unstable nuclei far from the stability line has resulted in the discovery of many exotic nuclei characterized by short half-lives and an unusual neutron-to-proton ratio. Such nuclei are of particular interest in fundamental and applied physics. For instance, measurement of interaction cross-section (σI) is essential for the deduction of the interaction radii and input in treatment planning programs for radiotherapy with heavy-ions such as 12C. However, the case of positron emitters (10,11C) is of special interest in ion beam therapy owing to their potential application in range verification in patients directly. Thus, an experiment has been performed at GSI Darmstadt to produce and separate the fragments (10,11C) of interest using the in-flight fragment separator and spectrometer FRS. The aim of the experiment was to measure the interaction and charge-changing cross-sections of 10,11,12C nuclei on a carbon interaction target at therapeutically relevant energies. The measurements were done with the transmission method, which means that the unreacted part of the beams is being analyzed using the FRS magnetic spectrometer. In this contribution, the experimental overview, data analysis, together with the preliminary results will be presented. This work is supported by ERC Advanced Grant 883425 (BARB) and performed within the Super-FRS Experiment Collaboration framework of the FAIR Phase-0.
Keywords: Interaction cross-section; Fragmentation; FRS; Positron emitters