Köln 2025 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 8: Structure and Dynamics of Nuclei IV
HK 8.4: Vortrag
Montag, 10. März 2025, 17:45–18:00, HS 3 Physik
Study of interaction and charge changing cross-sections of carbon and oxygen isotopes — •Rinku Prajapat for the BARB and Super-FRS Experiment collaboration — GSI, Darmstadt, Germany — SMU, Halifax, Canada
The development of radioactive beams and production techniques provide new insight into various dynamic and structural properties of unstable nuclei far from the stability line characterized by short half-lives and an unusual neutron-to-proton ratio. For instance, measurement of interaction (σI) and charge-changing (σCC) cross-sections are important for the deduction of the nuclear radii and also serve as an input in treatment planning programs for radiotherapy with heavy ions. However, the case of positron emitters (10,11C and 15O) is of special interest in ion beam therapy owing to their potential application in range verification via imaging using positron emission tomography (PET).
Thus, two experiments have been performed using the in-flight fragment separator and spectrometer FRS at GSI Darmstadt. The aim of the experiments was to measure the σI and σCC of 10,11,12C and σCC of 15,16O nuclei on a carbon, water, and (CH2)n target at therapeutically relevant energies. The measurements were done using the transmission method, which means that the unreacted part of the beams is being analyzed. In this contribution, the experimental overview, data analysis, and 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: Frgament separator FRS; Charge changing-cross sections; Interaction cross-sections; Positron emitters