Neutron capture reactions for nuclear astrophysics: Development & characterization of an innovative detection setup based on trans-Stilbene organic scintillators

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Δημοσιευμένα: Jun 2, 2025
DOI: https://doi.org/10.12681/hnpsanp.7995
Dimitris Papanikolaou
a:1:{s:5:"en_US";s:46:"Master Student, University of Ioannina, Greece";}
Agatino Musumarra
Maria Grazie Pellegriti
Nikolaos Patronis
Περίληψη

Neutron capture reactions are essential for understanding stellar nucleosynthesis beyond iron and the formation of elements in the universe. This study presents the development and characterization of a novel detection setup utilizing trans-Stilbene organic scintillators, developed at DFA (Dipartimento di Fisica e Astronomia "Ettore Majorana", Catania) and INFN-CT, to enhance neutron capture measurements for nuclear astrophysics.


A fully symmetrical multi-detector array was created, arranging the trans-Stilbene modules in a regular tetrahedral configuration to optimize geometric efficiency. The detectors were evaluated under various operation modes (pulse height/charge) and tested for neutron/gamma discrimination using Pulse Shape Discrimination (PSD). Additionally, a multivariate approach employing Principal Component Analysis (PCA) was implemented to handle multiple pulse characteristic parameters effectively.


The results highlight the potential of trans-Stilbene detectors to replace traditional C6D6 detectors at n_TOF/CERN, offering improved performance. The study also underscores their promising applications in both elastic and inelastic neutron scattering reactions, reinforcing their versatility and enhanced suitability for nuclear astrophysics research.

Λεπτομέρειες άρθρου
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  • Oral contributions
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Αυτή η εργασία είναι αδειοδοτημένη υπό το CC Αναφορά Δημιουργού – Μη Εμπορική Χρήση – Όχι Παράγωγα Έργα 4.0 4.0.

Αναφορές
Inrad Optics, 181 Legrand Avenue, Northvale, NJ 07647. https://www.inradoptics.com/
Proteus, 120 Senlac Hills Dr, Chagrin Falls, OH 44022. https://proteus-pp.com/
N. Patronis, EPJ Techn. Instrum. 10, 13 (2023); doi: 10.1140/epjti/s40485-023-00100-w DOI: https://doi.org/10.1140/epjti/s40485-023-00100-w
C. Domingo-Pardo et al., Eur. Phys. J. A 59, 8 (2023); doi: 10.1140/epja/s10050-022-00876-7 DOI: https://doi.org/10.1140/epja/s10050-022-00876-7
A. Musumarra et al., for the n_TOF collaboration, EPJ Web Conf. 304, 01009 (2024); doi: 10.1051/epjconf/202430401009 DOI: https://doi.org/10.1051/epjconf/202430401009
V. Alcayne, et. al., Rad. Phys. Chem. 217 (2024) 111525; doi: 10.1016/j.radphyschem.2024.111525
O. Aberle, et al., Letter of Intent to the ISOLDE and Neutron Time-of-Flight Committee; url: https://cds.cern.ch/record/2856350
N. Zaitseva, et. al., Nucl. Instrum. Meth. Phys. Res. A 789, 8 (2015); doi: 10.1016/j.nima.2015.03.090 DOI: https://doi.org/10.1016/j.nima.2015.03.090
D. Papanikolaou, Neutron capture reactions for nuclear astrophysics: development & characterization of an innovative detection setup based on trans-Stilbene organic scintillators; url: https://olympias.lib.uoi.gr/jspui/handle/123456789/38242
D.M. Castelluccio, and the n TOF Collaboration; url: https://cds.cern.ch/record/2894839/files/INTC-I-274.pdf
C. Massimi, Proposal CERN-INTC-2024-006; INTC-P-689, https://cds.cern.ch/record/2886127
Cristian Massimi, and the n_TOF Collaboration, EPJ Web of Conferences 275, 01009 (2023); doi: 10.1051/epjconf/202327501009 DOI: https://doi.org/10.1051/epjconf/202327501009
PS1807 Data Sheet Photomultiplier Power Base (Negative), https://www.sens-tech.com/wp-content/uploads/2023/03/senstech-PS1807-v1.pdf
I. T. Jolliffe, Principal Component Analysis, Second Edition, Springer Series in Statistics, ISBN 0-387-95442-2 https://doi.org/10.1016/j.radphyschem.2024.111525 DOI: https://doi.org/10.1016/j.radphyschem.2024.111525