Article
Multidisciplinary Sciences
Elena A. Shishkina, Bruce A. Napier, Dale L. Preston, Marina O. Degteva
Summary: This paper examines the dose uncertainties of residents in the Southern Urals who were exposed to radioactive pollution. The study finds high levels of radiation exposure in the population, with dietary intake being the main pathway for internal exposure.
Article
Chemistry, Physical
Laura Weiler, Tina N. Mihm, James J. Shepherd
Summary: This article introduces a Gaussian process regression model for the transition structure factor in metal periodic coupled cluster singles and doubles calculations. The model is inspired by previous methods and uses a one-dimensional function to fit the structure factor and correct for finite size errors.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Review
Radiology, Nuclear Medicine & Medical Imaging
Thomas Rockwell Mackie
Summary: This paper describes the early years of the Tomotherapy Research Group at the University of Wisconsin-Madison, focusing on algorithm and software development for radiation therapy dose calculations. The concept of helical tomotherapy evolved from the design of a treatment unit that simplified calculations and enabled image-guided radiotherapy. The paper discusses the genesis of ideas and challenges encountered during the development process.
Article
Biology
Azadeh Akhavanallaf, Reza Mohammadi, Isaac Shiri, Yazdan Salimi, Hossein Arabi, Habib Zaidi
Summary: The study introduced a personalized brachytherapy dosimetry approach based on deep learning, which improves accuracy while avoiding the computational burden of Monte Carlo calculations and simplifications of TG-43. Experimental results showed that this method exhibited comparable performance to the Monte Carlo method in dose prediction.
COMPUTERS IN BIOLOGY AND MEDICINE
(2021)
Article
Astronomy & Astrophysics
N. K. Timofeyuk, L. Moschini, M. Gomez-Ramos
Summary: This paper investigates the effects of a three-body force on nucleon transfer reactions in reactions with a loosely-bound projectile. The study finds that the three-body force can noticeably alter the angular distributions at forward angles and has consequences for spectroscopic factors' studies.
Article
Chemistry, Physical
Tina N. Mihm, William Z. Van Benschoten, James J. Shepherd
Summary: A new approach using low-cost calculations was developed to find a twist angle that matches the coupled cluster doubles energy in a finite unit cell. The method was shown to have comparable accuracy with exact methods beyond coupled cluster doubles theory. Additionally, for small system sizes, the same twist angle can be found by comparing energies directly, suggesting a potential route towards twist angle selection.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Environmental Sciences
Camila Moreira Araujo de Lima, Tadeu Augusto de Almeida Silva, John Graham Hunt, Francisco Cesar Augusto Da Silva
Summary: Radiological accidents mainly occur in high-risk practices such as radiotherapy, industrial irradiators, and industrial radiography. This paper presents a case study of an industrial gamma radiography accident in Brazil, which resulted in multiple exposures to radiation. The article provides radiation dose estimates for all individuals accidentally exposed.
JOURNAL OF RADIOLOGICAL PROTECTION
(2022)
Article
Materials Science, Multidisciplinary
Byungmin Kang, Junggi Yoon
Summary: Researchers have constructed a sign-problem-free variant of the SYK model, which retains all the essential properties of the original model while introducing an additional parameter M to control the number of terms in the Hamiltonian. They have found that this model exhibits non-Fermi-liquid physics beyond the conventional Fermi-liquid picture in the large-N limit.
Article
Physics, Nuclear
Takayuki Myo, Mengjiao Lyu, Hiroshi Toki, Hisashi Horiuchi, Qing Zhao, Masahiro Isaka, Hiroki Takemoto, Niu Wan
Summary: We propose a new many-body method based on correlation functions and apply it to molecular dynamics models. The results show that the independent optimization of many-body diagrams leads to improved calculations of energy and Hamiltonian components.
Article
Physics, Nuclear
Masahiro Isaka, Qing Zhao, Takayuki Myo, Mengjiao Lyu, Hiroshi Toki, Hisashi Horiuchi, Hiroki Takemoto, Niu Wan
Summary: We found the important role of spatially compact nucleon wave packets in fully describing nucleon correlations, and improved the momentum distribution of high-momentum pairs by varying the width parameter. The results showed that the spatially compact nucleon wave packets lowered the total energy and brought sufficient high-momentum components.
Article
Multidisciplinary Sciences
Joerg Peter
Summary: A software-based workflow is proposed for managing the execution of simulation and image reconstruction in single and multimodal biomedical imaging applications. The workflow utilizes a Bash script and dedicated programs for data flow organization, simulation, and reconstruction. Various standard formats are used for data representation and fully automatic distribution to Linux workstations and CPU cores is implemented for data processing.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Chemistry, Physical
S. Benyoussef, R. Essajai, Y. El Amraoui, H. Ez-Zahraouy
Summary: This paper evaluates the physical properties of Fe3S4 material using Ab-initio calculations and Monte Carlo Simulations, revealing important parameters such as half-metallic behavior, critical exponents, and critical temperature. Additionally, the temperature-dependent magnetization for different crystal field values has been analyzed.
Article
Physics, Particles & Fields
Raffaele Del Grande, Laura Serksnyte, Laura Fabbietti, Valentina Mantovani Sarti, Dimitar Mihaylov
Summary: The femtoscopy technique has been used to investigate hadron interactions in small colliding systems at the LHC. This study extends the technique to study many-body correlations and presents a method to determine the contributions of lower order terms to three-body correlation functions. The study also develops a procedure to simulate genuine three-body correlations in three-baryon correlation functions. Furthermore, the method can be applied to evaluate background noise in two-body correlation functions, providing improved statistical accuracy.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Meaghen Shiha, Joanna E. Cygler, Robert MaCrae, Emily Heath
Summary: This study investigates the feasibility of a 4D Monte Carlo based dose reconstruction method to study the dosimetric impact of respiratory motion in VMAT treatments for Non-Small Cell Lung Cancer. The 4D reconstruction method was successfully implemented for two patients, and small differences were observed between the planned and reconstructed doses due to the small tumor motion of these patients.
PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS
(2023)
Article
Chemistry, Physical
Abbas Nasreddine, Florent Kuntz, Ziad El Bitar
Summary: This study investigated the relative response of alanine dosimeters to kilo-voltage X-rays compared to Co-60 reference quality beam, and found consistent results within 2.1% through experimental measurements, Monte Carlo simulations, and analytical calculations.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Biology
David Endesfelder, Ursula Oestreicher, Ulrike Kulka, Elizabeth A. Ainsbury, Jayne Moquet, Stephen Barnard, Eric Gregoire, Juan S. Martinez, Francois Trompier, Yoann Ristic, Clemens Woda, Lovisa Waldner, Christina Beinke, Anne Vral, Joan-Francesc Barquinero, Alfredo Hernandez, Sylwester Sommer, Katalin Lumniczky, Rita Hargitai, Alegria Montoro, Mirta Milic, Octavia Monteiro Gil, Marco Valente, Laure Bobyk, Olga Sevriukova, Laure Sabatier, Maria Jesus Prieto, Mercedes Moreno Domene, Antonella Testa, Clarice Patrono, Georgia Terzoudi, Sotiria Triantopoulou, Rositsa Histova, Andrzej Wojcik
Summary: The biological and physical assays for retrospective dosimetry were validated and improved through a field exercise simulating real-life exposure scenarios. Results showed consistency among participants in dicentric chromosome assay (DCA) results and good match with reference doses, with potential underestimation corrected by exposure time. Participants were able to successfully estimate doses and provide important information on exposure scenarios.
INTERNATIONAL JOURNAL OF RADIATION BIOLOGY
(2021)
Article
Physics, Atomic, Molecular & Chemical
Nicolas Tkatchenko, Alexander Romanyukha, Ricardo Reyes, Steven G. Swarts, Didier Gourier, Francois Trompier
Summary: Human nails have been studied for their potential use in dosimetry using EPR signals induced by ionizing radiation. However, no fully validated protocol for retrospective dose measurement has been developed. The complexity of the EPR spectrum and the overlap between radiation-induced signals and background signals pose a major challenge. Detailed characterization of background signals is required to measure the radiation-induced signals accurately.
APPLIED MAGNETIC RESONANCE
(2022)
Editorial Material
Biology
Harold M. Swartz, Ruth C. Wilkins, Elizabeth Ainsbury, Matthias Port, Ann Barry Flood, Francois Trompier, Laurence Roy, Steven G. Swarts
INTERNATIONAL JOURNAL OF RADIATION BIOLOGY
(2022)
Article
Chemistry, Physical
Oswaldo Baffa, Patricia Nicolucci, Marcos Candeias, Francois Trompier, Angela Kinoshita
Summary: This study used alanine/electron spin resonance dosimetry to assess photon doses to electronic equipment and cables at the Angra 1 nuclear power plant in Brazil during an operation cycle. The influence of neutron radiation was also evaluated, and the results showed that alanine dosimetry is capable of operating over a wide dose range. The study suggests that alanine/ESR dosimetry can be used as part of the Environmental Qualification Program of Electrical Equipment in a nuclear power plant.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Geography, Physical
Davinia Moreno, Ana Isabel Ortega, Christophe Falgueres, Qingfeng Shao, Olivier Tombret, Asier Gomez-Olivencia, Arantza Aranburu, Francois Trompier, Jose Maria Bermudez de Castro, Eudald Carbonell, Juan Luis Arsuaga
Summary: The Galeria de las Estatuas is a Mousterian site located in the karstic system of Sierra de Atapuerca, Spain. It has yielded a large number of lithic artefacts, faunal remains, Neanderthal foot phalanx, and mitochondrial and nuclear DNA. With various dating methods, the site has been dated to approximately 45ka cal BP, and the sediment containing Mousterian lithic artefacts, faunal, and human remains is estimated to have been deposited during the second part of MIS5.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
A. M. M. Leite, M. Cavallone, M. G. Ronga, F. Trompier, Y. Ristic, A. Patriarca, L. De Marzi
Summary: To assess the suitability of standard clinical dosimeters, the ion collection efficiency of several commercially available air-vented ionization chambers (IC) was evaluated in both conventional and very-high dose rate (VHDR) proton irradiation conditions. The results showed that the ion recombination correction factors for most detectors were below 2% at VHDRs, indicating comparable collection efficiency to conventional dose rates. However, the Nano Razor exhibited higher recombination correction factors at VHDRs, suggesting a reduction in collection efficiency at higher dose rates.
PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS
(2023)
Article
Physiology
Manon Guillou, Bruno L'Homme, Francois Trompier, Gaetan Gruel, Yolanda Prezado, Morgane Dos Santos
Summary: Interventional radiology has become an essential tool for treatment or diagnosis, but the lack of knowledge about the radiobiological consequences of low-energy X-rays used in these practices has led to uncertainties in prognosis. In order to improve radiation protection and predict complications, a new preclinical mouse model was implemented to mimic radiological burn in interventional radiology. Experimental and Monte Carlo simulation methods were used to characterize the dose deposition in different tissues. The results showed the heterogeneity of dose deposition and the influence of tissue density on the characteristics of secondary electrons.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Physics, Multidisciplinary
Paola Fattibene, Francois Trompier, Celine Bassinet, Bartlomiej Ciesielski, Michael Discher, Jonathan Eakins, Chryzel Angelica B. Gonzales, Christelle Huet, Alexander Romanyukha, Clemens Woda, Malgorzata Juniewicz, Hyoungtaek Kim, Jungil Lee, Agnieszka Marciniak, Sergey Sholom, Hiroshi Yasuda
Summary: This article aims to provide an overview of the questions, challenges, and solutions regarding retrospective dosimetry in acute accidental exposures using physical methods such as electron paramagnetic resonance, thermoluminescence, and optically stimulated luminescence in biological tissues and inert materials. As research on emergency response methods faces increasing difficulties in terms of financial and human resources in many countries, it is crucial to prioritize research and focus on cost-effective paths. The paper intends to stimulate discussion in the scientific community and encourage collaboration among laboratories towards goals that address the real needs in retrospective dosimetry for acute exposures.
Article
Nuclear Science & Technology
Maha Bouhadida, Asmae Mazzi, Mariya Brovchenko, Thibaut Vinchon, Mokhtar Z. Alaya, Wilfried Monange, Francois Trompier
Summary: In this study, artificial neural networks are used to unfold neutron spectra from measured energy-integrated quantities. These spectra are important for calculating absorbed dose and kerma for radiation protection and nuclear safety. The architectures used are inspired by convolutional neural networks, with one architecture using residual transposed convolution blocks and the other being a modified version of the U-net architecture. A large and balanced simulated dataset is used to train the architectures effectively, considering realistic physical constraints. The results demonstrate high accuracy in predicting neutron spectra from thermal to fast spectrum, with dataset processing, attention to performance metrics, and hyperoptimization contributing to the robustness of the architectures.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
M. Pallu, S. Celestin, F. Trompier, M. Klerlein
Summary: Terrestrial gamma ray flashes (TGFs) are bursts of high-energy photons produced in thunderstorms, while electrons deliver high doses in a compact area around the TGF source. Previous studies have shown that the photon doses from TGFs are sufficiently low to be negligible for radiation exposure during flights. In this work, the upper bound probability of a commercial flight being hit by the electron beam of a TGF is estimated, and the results suggest that the probability is very low for the total air traffic.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Review
Biology
Francois Trompier, Larry A. Dewerd, Yannick Poirier, Morgane Dos Santos, Ke Sheng, Keith A. Kunugi, Thomas A. Winters, Andrea L. Dicarlo, Merriline Satyamitra
Summary: The cornerstones of science advancement are rigor, reproducibility, and unbiased reporting in scientific research. For radiation research, it is important to accurately describe experimental details and irradiation protocols for precise and reproducible dosimetry. However, many institutions conducting radiation biology research lack sufficient details in reporting their protocols, hindering balanced review and replication of experiments. To address this, experts have outlined minimum reporting standards for preclinical irradiators and dosimetry.
INTERNATIONAL JOURNAL OF RADIATION BIOLOGY
(2023)
Article
Environmental Sciences
Veronique Menard, Yoann Ristic, Francois Trompier
Summary: This study compared alanine dosimetry with ionisation chamber measurements for whole-body mouse irradiation and found reproducibility issues caused by cable twisting and irradiation of the ionisation chamber connector. Results showed a difference of up to 8.4% between alanine dosimetry and ionisation chamber measurements, and the influence of the number of animals in the sterile box on whole-body dose was found to be less than 2%.
RADIATION PROTECTION DOSIMETRY
(2023)
Editorial Material
Environmental Sciences
Shin Toyoda, Ann B. Flood, Tomisato Miura, Francois Trompier, Ruth Wilkins
RADIATION PROTECTION DOSIMETRY
(2023)
Editorial Material
Biology
Yannick Poirier, Larry A. DeWerd, Francois Trompier, Morgane Dos Santos, Ke Sheng, Keith Kunugi, Merriline M. Satyamitra, Andrea L. DiCarlo, Thomas A. Winters
RADIATION RESEARCH
(2023)
Article
Environmental Sciences
H. M. Swartz, S. G. Swarts, E. Ainsbury, R. C. Wilkins, M. Port, F. Trompier, A. B. Flood, L. Roy
Summary: There are similarities in the responses needed for managing COVID-19 and radiation injuries, as they both involve identifying and dealing with exposed individuals. Biodosimetry plays a crucial role in both situations.
