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EPJ Plus Focus Point Issue - Radiation protection issues in the environment and workplaces

Guest Editors: M. Magnoni, L. Garlati, G.M. Contessa, S. Grande

We are proud to announce the release of the Focus Point "Radiation Protection Issues in the Environment and Workplaces". This collection brings together cutting-edge research presented at the 2022 and 2023 Italian Radiation Protection Association (AIRP) Conferences, along with recent studies from other AIRP scientific events.

With contributions from over 200 radiation protection professionals from universities, research institutions, and public agencies, the issue provides a comprehensive overview of the most important topics in radiation protection. The papers cover critical areas such as Medical and Health Physics, Nuclear Power Plant Decommissioning, Dosimetry, Environmental and Natural Radioactivity, and Non-Ionizing Radiation.

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EPJ Plus Highlight - Painting materials in San Salvatore crypt, Italy, confirmed to be from the Lombard Period

Complemeting PIXE spectroscopy with two further techniques, electron microscopy and Raman spectroscopy, plus infrared photography has allowed a full characterisation of the pigments making up these important medieval paintings.

The eighth-century church and crypt of San Salvatore in Brescia, Italy is one of the most important pieces of Early Medieval religious architecture in that country, if not in Europe as a whole. The crypt is known for its remarkable wall paintings. The pigments used in these were analysed about twenty years ago using a non-destructive technique, PIXE (Particle-Induced X-ray Emission Spectroscopy), but the results were largely inconclusive. An international group of scientists led by Alessandro Zucchiatti of the University of the Witwatersrand, Johannesburg, South Africa and the University of Genoa, Italy has now performed a much more detailed analysis of these pigments, leading to important insights into their nature. This work is now published in EPJ Plus.

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EPJ Plus Highlight - Modelling antineutrinos emitted from nuclear reactors during fission

Differences in antineutrino production by each isotope in the nuclear fuel under different conditions.

Nuclear fission is the most reliable source of antineutrinos, but they are difficult to characterise. A new study suggests how their emission can be simulated most effectively.

Antineutrinos are mysterious fundamental anti-particles with no charge and an exceptionally small but non-zero mass. The JUNO project (Jiangmen Underground Neutrino Observatory) in China is a large scintillation detector designed to detect them and to characterise their properties, particularly in precise measurements of that tiny mass. Anti-particles are hard to measure and even harder to control, even when they come from a strong and reliable source.

A group of Italian physicists, led by Monica Sisti of the Istituto Nazionale di Fisica Nucleare (INFN) in Milan and Antonio Cammi of the Politecnico di Milano and part of the JUNO collaboration of over 700 scientists from 17 countries, has now modelled parameters that determine the ‘antineutrino spectrum’ emitted by a source. Their results are published in the journal EPJ Plus.

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EPJ Plus Highlight - Assessing the place of citizen science in modern research

Schematic PERT diagram showing selected workflows of big/complex data from the European Strategic Forum for Research Infrastructures (ESFRIs), and the external context of the European Open Science Cloud (EOSC). This illustrative workflow shows the virtuous circle between human and machine learning

New analysis presents recommendations for EU-funded research projects on how citizen science can be deployed to ensure the best possible outcomes for both research and public engagement.

In recent years, numerous fields of research have seen an explosion in the volume and complexity of their scientific data. To keep pace with these changes, EU-funded research projects are increasingly crowdsourcing their data through citizen science projects, which allow the public to engage directly with their research.

Through a detailed analysis published in EPJ Plus, Stephen Serjeant and colleagues at The Open University present new recommendations for how citizen science should be deployed to ensure the best possible outcome for research. The team’s insights could help researchers to better understand the potential impacts of this new way of doing science.

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EPJ Plus expands and refines scope of geophysics section to become Earth System Physics

EPJ Plus has both expanded and refined the scope of its geophysics section to become Earth System Physics, which is encompassing all topics and methodologies that view the rapidly growing field of Earth System Science through the lens of physics. The aim is to offer a platform for discussing fresh perspectives and understanding of the dynamics and scales connecting geosphere, hydrosphere, atmosphere, and biosphere and the forming of environments and climates. At the same time the new scope wishes to recognize and foster the transformative potential of deep learning in the field - the connections between data scientists and geoscientist are still developing, and physically-informed AI represents not just an evolution in methodology but a paradigm shift in how to conceptualize and engage with Earth System Science.

For more information please read the Editorial by Antonio Navarra, the Managing Editor of this section.

EPJ Plus Highlight - A guide for early-career researchers in computational science

A navigable guide for graduate students. Credit: ErrantScience

A new article offers a valuable guide for new graduate students starting out their careers in computational science.

In recent years, a growing number of students have embraced scientific computation as an integral component of their graduate research. Yet since many of them are new to the field, they often have little to no coding experience, or any prior knowledge of computational tools. For many students starting out in the field, this can seem daunting, and leaves them unsure of where to start.

In a new article published in EPJ Plus, a team led by Idil Ismail, a current graduate student at the University of Warwick, UK, present an introductory guide to the field for researchers embarking on new careers. The team's work will help new graduate students to navigate the complexities of scientific computation science as they begin their journey in computational science research and could ultimately help the wider field to become more transparent and inclusive.

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EPJ Plus Highlight - Describing growing tissues in the language of thermodynamics

Nematic properties determine the structure and the shape of the aggregate.

New analysis shows how key properties of biological tissues can be accurately described in the mathematical language of Onsager’s variational principle, widely used to describe continually changing systems in thermodynamics.

A key feature of biological tissues is their inhomogeneity and their ability to grow via cell reproduction. To study this behaviour, it is important to describe it using equations, which account for factors including growth rates, chemical signalling, and tissue structure.

In doing this, researchers aim to develop consistent continuous descriptions of these deeply complex systems: accurately predicting properties such as cell reproduction rates, disorder, and how their growth varies in different space directions, depending on their interactions.

Through new analysis published in EPJ Plus, Joseph Ackermann and Martine Ben Amar at Sorbonne University Paris, show that tissue development can be reliably captured within ‘Onsager’s variational principle’: a mathematical framework used widely in thermodynamics.

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Focus Point on Physics in the Balkans: Perspectives and Challenges

Guest editors: Luc Bergé, Goran S. Djordjević and Zoran V. Popović

One specificity of physics in the Balkans is the existence of a tradition, more than 30 years long, of organizing triennial Balkan congresses (International General Physics Conferences) within the Balkan Union of Physicists (BPU) as a platform for the presentation of the research results of hundreds of participants and their collaborators with the Balkans, from Europe and the world.

The aim of this Focus point of EPJ Plus is to contribute to an overview of the state of the art of research in physics in the Balkans. Eleven of the seventeen plenary and invited lecturers at the BPU11 Congress contributed to this issue. The Focus Point provides valuable insights and highlights results in already established areas, as well as some interesting new research avenues to pursue. This issue contains mainly original scientific papers with review elements in the fields of Solid State Physics, Physics of Materials, Econophysics, Quantum Optics and Laser Physics, Open Quantum Systems, Cosmic Rays and Hubble Tension in Cosmology, Nuclear and Collider Physics.

All articles are freely accessible until 31 May 2024. For further information, read the Editorial.

T. Mihaescu, A. Isar, Irreversibility and entropy production in two coupled bosonic modes interacting with a thermal environment. Eur. Phys. J. Plus 139, 82 (2024). https://doi.org/10.1140/epjp/s13360-024-04869-x

D. Joković et al., Application of Geant4 simulation in measurement of cosmic-ray muon flux and studies of muon-induced background. Eur. Phys. J. Plus 138, 1006 (2023). https://doi.org/10.1140/epjp/s13360-023-04639-1

V.V. Gligorov, V. Reković, Review of real-time data processing for collider experiments. Eur. Phys. J. Plus 138, 1005 (2023). https://doi.org/10.1140/epjp/s13360-023-04599-6

D. Huterer, Hubble tension. Eur. Phys. J. Plus 138, 1004 (2023). https://doi.org/10.1140/epjp/s13360-023-04591-0

B. Arbutina, Nonlinear diffusive shock acceleration of cosmic rays: quasi-thermal and non-thermal particle distributions. Eur. Phys. J. Plus 138, 863 (2023). https://doi.org/10.1140/epjp/s13360-023-04500-5

C. Farcău, Linear arrays of metal-coated microspheres: a polarization-sensitive hybrid colloidal plasmonic–photonic crystal. Eur. Phys. J. Plus 138, 827 (2023). https://doi.org/10.1140/epjp/s13360-023-04638-2

L. Stoyanov et al., Optical vortices in brief: introduction for experimentalists. Eur. Phys. J. Plus 138, 702 (2023). https://doi.org/10.1140/epjp/s13360-023-04227-3

D.B. Milošević, Application of quantum-orbit theory to atomic processes in strong tailored laser fields and terahertz pulses. Eur. Phys. J. Plus 138, 356 (2023). https://doi.org/10.1140/epjp/s13360-023-03962-x

E.V. Monaico et al., Gold coated microstructures as a platform for the preparation of semiconductor-based hybrid 3D micro-nano-architectures. Eur. Phys. J. Plus 138, 827 (2023). https://doi.org/10.1140/epjp/s13360-023-04462-8

Z. Popović, P. Miranović, Current–voltage characteristics and conductance spectra in s-wave or d-wave superconductor/ferromagnet/superconductor heterojunctions: role of Andreev reflection. Eur. Phys. J. Plus 138, 767 (2023). https://doi.org/10.1140/epjp/s13360-023-04394-3

M. Maragakis et al., Tracing technological shifts: time-series analysis of correlations between patent classes. Eur. Phys. J. Plus 138, 776 (2023). https://doi.org/10.1140/epjp/s13360-023-04344-z

EPJ Plus Highlight - Beam balance designs could elucidate the origins of dark energy

The beam balance prototype

With some improvements, the instrument could help physicists to identify the mysterious origins of dark energy.

One of the greatest problems in modern physics is to reconcile the enormous difference between the energy carried by random fluctuations in the vacuum of space, and the dark energy driving the universe’s expansion.

Through new research published in EPJ Plus, researchers led by Enrico Calloni at the University of Naples Federico II, Italy, have unveiled a prototype for an ultra-precise beam balance instrument, which they hope could be used to measure the interaction between these vacuum fluctuations and gravitational fields. With some further improvements, the instrument could eventually enable researchers to shed new light on the enigmatic origins of dark energy.

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EPJ Plus Highlight - Unlocking the full potential of Auger electron spectroscopy

Different regimes of core-hole creation and recombination

A new computational approach makes more realistic assumptions about the redistribution of energy during the Auger process, improving the accuracy of Auger electron spectroscopy.

Auger electron spectroscopy (AES) is an incredibly useful technique for probing material samples – but current assumptions about the process ignore some of the key time-dependent effects it involves. So far, this has resulted in overly-simplified calculations, which have ultimately prevented the technique from reaching its full potential.

Through a new study published in EPJ Plus, Alberto Noccera at the University of British Columbia, Canada, together with Adrian Feiguin at Northeastern University, United States, developed a new computational approach which offers a more precise theoretical description of the AES process, while taking its time dependence into account. Their method could help researchers to improve their quality of material analysis across a wide array of fields: including chemistry, environmental science, and microelectronics.

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Editors-in-Chief
B. Fraboni and G. García López
We thank you very much for the confidence, the work done, the speed and the various orientations for its successful completion. We also take the opportunity to thank your team for their open-mindedness.

Arnaud Edouard Yamadjako, University of Abomey-Calavi, Godomey, Benin

ISSN: 2190-5444 (Electronic Edition)

© Società Italiana di Fisica and
Springer-Verlag