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Martha Papadopoulou05/06/2026, 14:55Poster
This study investigates the prediction of Total Kinetic Energy in neutron-induced fission using Gaussian Process Regression, a non-parametric method for probabilistic regression. Due to the computational cost of theoretical calculations and the limited availability of experimental data, it is of interest to investigate machine learning methods. Training data are obtained from the General...
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Christos Bompotas (Aristotle University of Thessaloniki)05/06/2026, 14:56Poster
In this work, a modern computational method was developed with the goal to predict the total kinetic energy of neutron-induced fission fragments across a wide range of nuclei. This data-driven approach was trained on a large-scale, simulated dataset generated by the semi-empirical GEF code, which provides a comprehensive baseline of fission observables. The methodology was employed with a...
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Konstantinos Stergiou (Department of Physics, Aristotle University of Thessaloniki)05/06/2026, 14:57Poster
Accurate knowledge of fission product yields (FPY) is fundamental for nuclear reactor physics, waste management, and the understanding of nuclear structure. However, experimental data for neutron-induced fission are often sparse, especially across wide incident energy ranges. This work explores the application of Machine Learning techniques, specifically Gaussian Process Regression (GPR), to...
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Ioannis Stergakis (School of Physics, Aristotle University of Thessaloniki)05/06/2026, 14:58Poster
A fundamental challenge in nuclear physics is the determination of the equation of state (EoS) of dense nuclear matter, which directly impacts our understanding of the structure and composition of compact astrophysical objects, such as neutron and quark stars. Traditionally, this problem has been approached through theoretical modeling, based on nuclear and particle physics, followed by...
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Despoina Neraki (Aristotle University of Thessaloniki)05/06/2026, 14:59Poster
Compact stars provide a unique probe of matter under extreme density conditions, yet their
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internal composition remains uncertain. In particular, hadronic neutron stars and quark stars
may exhibit overlapping mass–radius relations, making their distinction challenging through
conventional observables alone. In this work, we apply machine learning and neural-network
methods to classify... -
Dimitrios Nanopoulos (Aristotle University of Thessaloniki)05/06/2026, 15:00Poster
One of the most important subjects in nuclear physics is the study of the nature of astrophysical compact objects. A quite intriguing scenario when examining the composition of nuclear stellar matter in compact star cores is the presence of exotic constituents such as kaon condensates. In the present conference contribution, we focus our attention on the central compact object (CCO) in the...
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Alexandros Gardikiotis (Aristotle University of Thessaloniki)05/06/2026, 15:01Poster
In modern neutron facilities such as the European Spallation Source (ESS), accurate beam monitoring is critical for ensuring robust diagnostics and data reliability. In this work, a Geant4-based simulation has been developed to support the design and optimization of ESS beam monitors, focusing on MPGDs with a B₄C conversion layer.
The detector’s response was evaluated by modeling energy...
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Chrysi Giannitsa (National and Kapodistrian University of Athens)05/06/2026, 15:02Poster
The investigation of α-clustering is pivotal for elucidating nuclear structure and reaction dynamics within light and medium-mass systems. In this study, we present a preliminary analysis of experimental data derived from the reaction of a $^{40}$Ca beam (12.3 MeV/nucleon) on $^{27}$Al and $^{124}$Sn targets, conducted at the Cyclotron Institute of Texas A&M University using the MARS recoil...
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Konstantinos Gkatzogias (Laboratory of Physical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens)05/06/2026, 15:03Poster
We present an investigation of the mass-asymmetric collision of a ⁸⁶Kr beam with a ²⁷Al target at an incident energy of 15 MeV/nucleon. The primary goal is to characterize the mass, angular, and momentum distributions of projectile-like fragments emerging from this reaction. The experimental data utilized here were acquired with the MARS spectrometer at the Texas A&M University Cyclotron...
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George Paparigas (National Kapodistrian University Athens)05/06/2026, 15:05Poster
Cosmic nucleosynthesis presents a relatively good understanding of the production of light elements up to iron; however, the origin and abundances of heavier nuclei (A > 56) remain an open problem. Among the proposed nucleosynthesis mechanisms, reactions induced by charged particles, such as α particles, play a significant role in the production of p-nuclei in extreme astrophysical...
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Vasilis Gkionis (National and Kapodistrian University of Athens)05/06/2026, 15:06Poster
Moving past the $N=104$ midshell and approaching the $Z=82$ shell closure presents several opportunities to study nuclear structure as single-particle degrees of freedom compete with collective phenomena to determine several of the spectroscopic properties observed. The Os ($Z=76$) isotopic family presents a compelling study case among the rare-earth nuclei, as it exhibits a variety of...
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Nikoletta Giannakou (Vilnius University)05/06/2026, 15:07Poster
Studies in the efficacy of 161Tb production through the neutron activation of 160Gd are especially important, as 161Tb is a well-known alternative to 177Lu, and is often considered superior [1] in battling CRPC (castration-resistant prostate cancer). However, there are many difficulties associated with the procurement of an enriched 160Gd2O3 target, thus necessitating a study regarding the...
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Anastasia Ziagkova05/06/2026, 15:09Poster
One of the primary Ion Beam Analysis (IBA) techniques employed for the determination of sample composition and the performance of in-depth analysis is Time of Flight – Elastic Recoil Detection Analysis (ToF – ERDA). The technique's unique advantage is its ability to detect and distinguish light elements, including hydrogen, deuteron, and lithium (up to aluminum or higher), in a variety of...
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Eleni Mitsi (Department of Physics, National Technical University of Athens, Athens, Greece)05/06/2026, 15:10Poster
E. Mitsi1,2, P.Tsavalas2, S. Pantousa2, M. Axiotis2, A. Lagoyannis 2, K. Mergia2, G. Apostolopoulos2
1 Department of Physics, National Technical University of Athens, Athens, Greece
2 National Centre for Scientific Research “Demokritos”, Agia Paraskevi, GreecePresenting author email: elmitsi@ipta.demokritos.gr
Accelerator-based ion irradiation is widely employed to investigate...
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Apospori Eirini (INRASTES, National Center of Scientific Research «Demokritos», Aghia Paraskevi, 15310 Athens, Greece/ DNA Damage Laboratory, Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou, 15780 Athens, Greece)05/06/2026, 15:11Poster
A neutron irradiation system for radiobiological cell experiments was characterized using Monte Carlo simulations to assess the mixed neutron–gamma radiation field and its suitability for biological applications. The irradiator consists of two ²³⁹Pu(α,n)⁹Be neutron sources with a total ²³⁹Pu activity of 444 GBq. The sources are housed in a graphite collimator and surrounded by lead and...
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Vasileia Saridaki (INRASTES, National Center of Scientific Research “Demokritos”, Aghia Paraskevi, 15310 Athens, Greece , Department of Physics, National Technical University of Athens, Zografou, 15780 Athens, Greece)05/06/2026, 15:12Poster
The present work describes the development and implementation of a
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methodology for the gamma-spectrometric characterization of metallic samples
irradiated in different neutron fields with energies ranging from 2.4 up to 14 MeV.
The samples studied consisted of a set of disc-shaped metallic elements manufactured
from high-purity materials, including silver, tantalum, cobalt, and nickel.... -
Ioannis Kaissas (Nuclear Technology Laboratory, School of Electrical & Computer Engineering, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece)05/06/2026, 15:13Poster
The urgent need for carbon-free energy production has established Small Modular Reactors (SMRs) as a vital component of the clean energy transition. Characterized by an electrical output of 10 to 300 MWe, SMRs offer significant versatility, operating in base-load mode for grid stability or in load-following mode to compensate for intermittent Renewable Energy Sources (RES). A key advantage...
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N.P. Petropoulos (Nuclear Engineering Laboratory National Technical University of Athens)05/06/2026, 15:14Poster
This study investigates the qualitative and quantitative properties of the neutron flux near the geometry boundary of the neutron subcritical piles of the Nuclear Engineering Laboratory of NTUA (NEL-NTUA) using the freely available OpenMC Code. The Laboratory operates two subcritical piles. The first one has a cubic geometry tank of 1 m3 volume. A...
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