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Precise measurement of the Bragg curve for 800 MeV/u ²³⁸U ions stopping in polyethylene and its implications for calculation of heavy ion ranges

Horst, Felix ; Ferrari, Alfredo ; Sala, Paola ; Schuy, Christoph ; Durante, Marco ; Weber, Uli (2024)
Precise measurement of the Bragg curve for 800 MeV/u ²³⁸U ions stopping in polyethylene and its implications for calculation of heavy ion ranges.
In: Journal of Instrumentation, 2022, 17 (12)
doi: 10.26083/tuprints-00023100
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Precise measurement of the Bragg curve for 800 MeV/u ²³⁸U ions stopping in polyethylene and its implications for calculation of heavy ion ranges
Language: English
Date: 29 July 2024
Place of Publication: Darmstadt
Year of primary publication: 2022
Place of primary publication: London
Publisher: IOP Publishing
Journal or Publication Title: Journal of Instrumentation
Volume of the journal: 17
Issue Number: 12
Collation: 13 Seiten
DOI: 10.26083/tuprints-00023100
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

Stopping power predictions in radiation transport codes are based on the Bethe-Bloch formula and different corrections. For very heavy ions at relativistic energies the available experimental data are scarce and therefore verification of stopping power predictions is only possible to a limited extent. In this work, a full experimental Bragg curve for 800 MeV/u ²³⁸U ions stopping in polyethylene is presented. The measurements were conducted at the experimental area Cave A at GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. The 800 MeV/u ²³⁸U beam was provided by the SIS18 heavy ion synchrotron. The Bragg curve was measured with a setup consisting of a binary range shifter and two large area parallel plate ionization chambers. Complementary Monte Carlo simulations using the FLUKA code were performed and compared with the experimental Bragg curve. The mean ionization potential of polyethylene was fine-tuned to match the measured primary ion range with FLUKA simulations. The impact of the Bloch and Mott corrections to the stopping power calculation were studied by switching them off intentionally in separate simulations. A detailed description of the implementation of the stopping power formulae and the Mott correction in FLUKA is provided.

Uncontrolled Keywords: Models and simulations, Simulation methods and programs, Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Gaseous detectors
Identification Number: Artikel-ID: P12019
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-231005
Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute for Condensed Matter Physics
Date Deposited: 29 Jul 2024 10:00
Last Modified: 18 Sep 2024 13:44
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23100
PPN: 521579856
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