Applied Radiation and Isotopes最新文献

{"title":"An approach to measure low LET radiation at high dose using CR-39 track detector","authors":"G.S. Sahoo ,&nbsp;Sabyasachi Paul ,&nbsp;S.P. Tripathy ,&nbsp;N. Chaudhary ,&nbsp;P. Srinivasan","doi":"10.1016/j.apradiso.2025.111817","DOIUrl":"10.1016/j.apradiso.2025.111817","url":null,"abstract":"<div><div>CR-39 track detectors are commonly used for measuring high LET (linear energy transfer) radiation with LET values above 10 keV/μm. This study proposes a method for using CR-39 to measure low LET radiation, such as photons and electrons, at high doses in the order of kilogray (kGy). CR-39 detectors were irradiated with bremsstrahlung photons generated from 10 MeV electrons striking a tantalum target, resulting in absorbed doses ranging from 6.5 kGy to 261.4 kGy. FLUKA Monte Carlo simulation was performed to estimate the dose deposition in CR-39 due to bremsstrahlung photons and to estimate the primary and secondary electron fluences incident on CR-39. The simulations revealed that the secondary electrons produced by the interactions of primary electron beam were of two orders less magnitude than that of bremsstrahlung photons. The results showed no significant changes in the absorbance values of different functional group vibrations of unetched CR-39 even they were exposed to high dose up to 261.4 kGy. However, after chemical etching, the intensities of two prominent peaks at 1230 cm⁻¹ (aliphatic ester C–O–C stretching) and 1735 cm⁻¹ (ester C=O stretching) significantly decreased at doses above 65.3 kGy. The study demonstrates the feasibility of using CR-39 track detectors for measuring low LET radiation at high doses in the range from 46 to 197 kGy by combining FTIR spectroscopy with chemical etching.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111817"},"PeriodicalIF":1.6,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on lithology and mudcake correction method based on X-ray density logging measurement","authors":"Guobin Liu ,&nbsp;Quanying Zhang ,&nbsp;Qian Chen ,&nbsp;Guangjun Xing ,&nbsp;Ningchao Li","doi":"10.1016/j.apradiso.2025.111803","DOIUrl":"10.1016/j.apradiso.2025.111803","url":null,"abstract":"<div><div>X-ray density logging technology is extremely important for the sustainable development of the petroleum industry. However, due to the difference in photon energy and intensity between the X-ray source and the Cs137 source, X-ray density logging is more easily affected by mudcake and lithology. Based on the Monte Carlo simulation method, the influence of the lithology and mudcake on the X-ray density logging was analyzed, and a set of lithology and mudcake correction method suitable for X-ray density logging were established. Research shows that, the lithology has an obvious impact on the entire energy spectrum of the X-ray density logging, as a result, it is difficult to reduce the lithology influence on density results by adopting a special energy-window. The count combination of high and low energy-windows can reduce the most lithology influence and can be used to obtain a more accurate density. In terms of mudcake, the spine-rib plot of the X-ray density logging is very different from that of traditional density logging, especially in the thick mudcake (both heavy and light) zone, and a single compensation formula cannot fit most mudcake situations. It is an effective method to solve the mudcake influence of X-ray density logging by establishing compensation formulas for different mudcake zones. This study can provide a theoretical guidance for data processing of X-ray density logging.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111803"},"PeriodicalIF":1.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RAPTOR-AI: An open-source AI powered radiation protection toolkit for radioisotopes","authors":"Hiroshi Watabe ,&nbsp;Peter K.N. Yu ,&nbsp;Dragana Krstic ,&nbsp;Dragoslav Nikezic ,&nbsp;Kyeong Min Kim ,&nbsp;Taiga Yamaya ,&nbsp;Naoki Kawachi ,&nbsp;Hiroki Tanaka ,&nbsp;Zoran Jovanovic ,&nbsp;A.K.F. Haque ,&nbsp;M. Rafiqul Islam ,&nbsp;Gary Tse ,&nbsp;Quinncy Lee ,&nbsp;Mehrdad Shahmohammadi Beni","doi":"10.1016/j.apradiso.2025.111797","DOIUrl":"10.1016/j.apradiso.2025.111797","url":null,"abstract":"<div><div>Artificial intelligence (AI) has gained significant attention in various scientific fields due to its ability to process large datasets. In nuclear radiation physics, while AI presents exciting opportunities, it cannot replace physics-based models essential for explaining radiation interactions with matter. To combine the strengths of both, we have developed and open-sourced the Radiation Protection Toolkit for Radioisotopes with Artificial Intelligence (RAPTOR-AI). This toolkit integrates AI with the Particle and Heavy Ion Transport code System (PHITS) Monte Carlo package, enabling rapid radiation protection analysis for radioisotopes and structural shielding. RAPTOR-AI is particularly valuable for emergency scenarios, allowing quick dose dispersion assessments when a facility’s structural map is available, enhancing safety and response efficiency.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111797"},"PeriodicalIF":1.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing X-ray quality and dose reduction: Evaluation with additional filters, Contrast-Detail Phantom and Monte Carlo simulation","authors":"K. Peglow ,&nbsp;C.C. Marinello ,&nbsp;M. Anés ,&nbsp;T.A. Pianoschi ,&nbsp;R. Lykawka ,&nbsp;J.H. Dias ,&nbsp;I.V. da Rosa ,&nbsp;V.B. Botelho ,&nbsp;A. Bacelar ,&nbsp;H. Trombini","doi":"10.1016/j.apradiso.2025.111787","DOIUrl":"10.1016/j.apradiso.2025.111787","url":null,"abstract":"<div><h3>Purpose:</h3><div>In radiology, achieving high image quality while minimizing radiation dose exposure is essential. For these purpose, understanding the technical parameters affecting both dose and image quality is crucial.</div></div><div><h3>Methods:</h3><div>This study aimed to evaluate, through both experimental and computational approaches, different combinations of additional filters of 0.1, 0.2, and 0.3 mm Cu and equipment voltage (96 to 133 kVp) for one of the most commonly performed radiological examinations, the Posteroanterior (PA) chest X-ray. The objective was to determine the optimal trade-off between dose and image quality and define the best radiographic technique for this examination. This balance was achieved through Figures of Merit (FOM). Experimentally, image quality was quantified and evaluated using a method called the Image Quality Figure Inverse (IQFinv), obtained with the Contrast-Detail Phantom from the brand Artinis (CDRAD Phantom), and the dose was measured using the air kerma-area product (<span><math><msub><mrow><mi>P</mi></mrow><mrow><mi>K</mi><mi>A</mi></mrow></msub></math></span>). The <span><math><msub><mrow><mi>P</mi></mrow><mrow><mi>K</mi><mi>A</mi></mrow></msub></math></span> values obtained were corrected through Monte Carlo simulations to estimate the patient dose. This was done for each combination of filter and kVp. Furthermore, these spectra were used to simulate the experimental setup to determine the energy deposited at the skin (0.07 mm) and at various depths within the phantom.</div></div><div><h3>Results:</h3><div>The experimental results demonstrated that the optimal trade-offs between image quality and radiation dose were achieved with the combinations of 96 kVp and 0.3 mm Cu and 102 kVp with 0.2 mm Cu. Compared to the routine protocol (109 kVp, 0 mm Cu), these techniques reduced <span><math><msub><mrow><mi>P</mi></mrow><mrow><mi>K</mi><mi>A</mi></mrow></msub></math></span> by approximately 13% and 12%, respectively, while improving IQF<span><math><msub><mrow></mrow><mrow><mi>i</mi><mi>n</mi><mi>v</mi></mrow></msub></math></span> by about 8% and 9%. Computational simulations reproduced the experimental results, showing that the best relationships between patient dose and image quality were achieved with the same techniques in both cases.</div></div><div><h3>Conclusion:</h3><div>Our results show that CDRAD Phantom and Monte Carlo simulations can be explored as a method that enables dosimetry in patients by representing real situations, thus allowing the selection of the correct radiographic technique (kVp and additional filtration). The correct selection of these technical parameters significantly reduces the patient’s dose while increasing image quality.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111787"},"PeriodicalIF":1.6,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Health risk implications due to uranium content in drinking water sources from the tectonically active zone of Garhwal Himalaya, India","authors":"Krishna Pal Singh ,&nbsp;Subhash Chandra ,&nbsp;Abhishek Joshi ,&nbsp;Shubham Sharma ,&nbsp;Vikrant Thakur ,&nbsp;Ganesh Prasad ,&nbsp;Rohit Mehra ,&nbsp;R.C. Ramola","doi":"10.1016/j.apradiso.2025.111804","DOIUrl":"10.1016/j.apradiso.2025.111804","url":null,"abstract":"<div><div>Uranium is omnipresent in the earth's crust, and its high concentration in the water poses a different type of health risk to humans. In view of this, water samples were collected from several locations in the Uttarkashi district region of Uttarakhand, India. The collected water samples were analyzed using an LED Fluorimeter. The range of the uranium concentrations in the collected water samples was found to be 0.01–3.48 μg l⁻¹ (ppb) with an AM (Arithmetic Mean) of 0.31 μg l⁻¹ (ppb). The Pearson's r between uranium and some physicochemical parameters (pH, temperature and Total Dissolve Solids) was 0.10, 0.008 and 0.04, respectively. The calculated values of excess lifetime cancer risk, lifetime average daily dose, and hazard quotient were found to be well within the safe limit as suggested by many agencies. The Annual Effective Dose (AED) received by the different age groups was also found within the safe limit of 100 μSv y⁻¹ recommended by the World Health Organization (WHO).</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111804"},"PeriodicalIF":1.6,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiation dose and cancer induction risk from diagnostic mammography in Dubai tertiary hospital","authors":"Kaltham Abdulwahid Noor ,&nbsp;Norhashimah Mohd Norsuddin ,&nbsp;Iza Nurzawani Che Isa ,&nbsp;Husain Murat ,&nbsp;Muhammad Khalis Abdul Karim","doi":"10.1016/j.apradiso.2025.111801","DOIUrl":"10.1016/j.apradiso.2025.111801","url":null,"abstract":"<div><div>This study aimed to estimate radiation dose and to assess the probability of cancer induction risk among patients who underwent mammography procedure in tertiary hospital in Dubai. After obtained approval from the research ethic committee,155 female patients with an average age of 55.5 ± 12.7 years-old were selected as subjects. Acquisition parameter, tube potential, tube current, compression force, and entrance dose were recorded and analyzed. The Mean Glandular Dose (MGD) were determined by applying the Dance formula, considering the entrance surface air kerma (ESAK) and other conversion coefficients. Patient age-data was used to assess the cancer induction risk from the acquisition, based on Biological Effects of Ionizing Radiation VII (BEIR VII) report, and standardizing the breast thickness. The MGD ranged between 0.7 and 3.5 mGy for medio-lateral oblique (MLO) and for cranio-caudal (CC) projections, respectively. The median MGD for CC lies between 1.4 mGy and 2.1 mGy, with an average of 1.7 mGy. Additionally, the MGD for the 3rd quartile spans a two-fold range. In a population of 100,000 exposed to MLO projection, the cancer incidence risk for a 37-year-old female was 6 times higher than that of a 60-year-old female, at 3.2 out of 100,000 and 0.5 out of 100,000, respectively. The LAR for the 35–45 years age group is 1.91 ± 0.66, decreasing to 0.27 ± 0.07 for those over 65 years. The CC view also shows a decrease from 1.73 ± 0.57 to 0.23 ± 0.04. The mammographic screening radiation dose and the risks that have been found in Dubai all fall within the recommended range, thereby calling for more works of research to determine the progress made in radiation protection. The study has provided additional evidence that the radiation dose used in current practice can be improved.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111801"},"PeriodicalIF":1.6,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The relationship of Cadmium, Lead, and Uranium with the geographical location of non-smoking Thalassemia individuals: A comparative study","authors":"Noor Hassan Abdulrudha ,&nbsp;Shaymaa Awad Kadhim","doi":"10.1016/j.apradiso.2025.111779","DOIUrl":"10.1016/j.apradiso.2025.111779","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Background and aims:&lt;/h3&gt;&lt;div&gt;Thalassemia is a group of heterogeneous hemolytics. Anemia is characterized by autosomal recessive inheritance Due to impaired synthesis of hemoglobin (Hb). The most common types of Thalassemia are Thalassemia and beta-thalassemia, which are named for the hemoglobin chains they affect. Blood from Thalassemia patients differs from the blood of healthy human beings due to function abnormalities such as reduced hemoglobin synthesis, changed crimson blood cell architecture, and scientific indicators of anemia. Heavy metal (HM) toxicity has been described as a risk factor for the development of Thalassemia in women and men; its assessment can predict susceptibility to Thalassemia (Thal.) HM levels of Cadmium (Cd), Lead (Pb), and Uranium (U) were evaluated in non-smoking individuals from outside and inside the holy city of Najaf. Eighty-two females, aged (9–40) years, and forty controls (11–45) years, were recruited into this case-control study. As well as the possibility of a relationship between the disease and radiation through detection of blood Uranium levels.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Method:&lt;/h3&gt;&lt;div&gt;The concentration values of the studied elements were determined in units (ppb) for Cadmium and lead after their digestion using flame atomic absorption spectrometry (FAAS). In contrast, uranium concentrations (ppb) were measured using a solid-state nuclear track detector (CR 39) by measuring the radon concentration.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results:&lt;/h3&gt;&lt;div&gt;The average &lt;span&gt;&lt;math&gt;&lt;mo&gt;±&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; standard deviation (SD) for (Cd) concentrations in the serum of the control group were higher (19.405 ± 1.117) ppb compared to the serum of Thalassemia individuals (1.570 ± 0.658)ppb, with high statistical significance (P &lt;span&gt;&lt;math&gt;&lt;mo&gt;&lt;&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; 0.05), while (Pb) in the serum of the control group (32.051 ± 8.423) ppb and vice versa was the lowest compared to the serum of Thalassemia individuals, with high statistical significance. As for (U) concentrations, they were close between the two groups, respectively, and the &lt;span&gt;&lt;math&gt;&lt;mi&gt;p&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;-value was greater than 0.05. The ANOVA analysis between the concentrations of the studied elements was statistically significant. Cd was positively correlated with Pb (r = 0.204, P = 0.066). The relationship between Cd and U has been neglected (r = 9.011, P = 0.922). As for Pb and Cd, the correlation was positive and weak (r = 0.204, P = 0.066).&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Conclusion:&lt;/h3&gt;&lt;div&gt;The serum concentrations of the studied elements in Thalassemia individuals outside the city of Najaf were higher than those of Thalassemia individuals inside the city of Najaf. The current study showed a difference in the mean differences in the concentrations of the studied elements between the Thalassemia group and the control group, and the location was important, as it was found that the concentrations were higher for the Thalassemia group outside the city of Najaf c","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"220 ","pages":"Article 111779"},"PeriodicalIF":1.6,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fully automated synthesis of [18F]fluorocholine on GE FASTlab II synthesizer","authors":"Min Wang,&nbsp;Chase A. Arkins,&nbsp;Scott E. Snyder","doi":"10.1016/j.apradiso.2025.111802","DOIUrl":"10.1016/j.apradiso.2025.111802","url":null,"abstract":"<div><div>A reliable and fully automated method for synthesis, purification and formulation of [¹⁸F]FCH on the GE FASTlab II utilizing a single-use cassette was reported. The radiosynthesis sequences of [¹⁸F]FCH was written based on the two-step, gas phase synthesis methodology. Dibromomethane (DBM) was fluorinated with no-carrier-added [¹⁸F]fluoride ion, assisted by K₂₂₂/K₂CO_3, to afford [¹⁸F]fluorobromomethane ([¹⁸F]FBM) as a gas. [¹⁸F]FCH was then prepared by bubbling [¹⁸F]FBM through Sep-Pak Silica cartridges to react with dimethylethanolamine (DMAE) preloaded on Sep-Pak C18 cartridge. The resulting [¹⁸F]FCH was purified using Sep-Pak C18 and Accell CM cartridges in series. The purified [¹⁸F]FCH was eluted from the CM cartridge and formulated with 0.9 % sodium chloride for injection. With this method, the radiochemical yield of [¹⁸F]FCH was 17.8 ± 2.5 % with a high radiochemical purity (&gt;99 %). Three consecutive [¹⁸F]FCH validation runs were performed, and all quality control parameters met the release criteria for human use. This method is quite straightforward utilizing single-use cassettes. [¹⁸F]FCH was reproducibly produced at sufficiently high radioactive concentration for multiple preclinical or human imaging doses from a single radiosynthesis.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111802"},"PeriodicalIF":1.6,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A conceptual design of a micro-propulsion device based on alpha particles","authors":"Wenxiang Fang,&nbsp;Dacai Zhang ,&nbsp;Minzhi Xiong,&nbsp;Xirui Zhang,&nbsp;Ming Yuan,&nbsp;Ganglin Yu","doi":"10.1016/j.apradiso.2025.111795","DOIUrl":"10.1016/j.apradiso.2025.111795","url":null,"abstract":"<div><div>Nuclear Power Sources (NPS) have become a vital propulsion technology for various space missions, such as those in Earth orbit and on lunar and planetary surfaces. Their key features include long lifespan, autonomy, and high energy density. Alpha particle micro-propulsion, a combination of NPS and micro-propulsion, leverages the recoil from alpha decay for thrust, offering high energy density and specific impulse with a straightforward and controllable design. This technology is ideal for missions demanding precision and longevity, such as scientific exploration and satellite navigation. Previous studies have calculated the thrust generated by Pu-238 and Po-210, but have not addressed the temperature distribution across the thin films and substrates, nor have they compared the comprehensive performance of different nuclides. This research investigates the performance of different alpha-decaying films like Pu-238, Am-241 and Po-210 on various substrates such as graphene, polyethylene, and so on, focusing on thrust, energy deposition, and heat transfer, with CERN's Geant4 Monte Carlo simulation, and also employs ANSYS's Fluent program and a simplified uniform temperature model to calculate the temperature distribution of the films and substrates. Results indicate that thinner films correspond to lower temperatures, higher escape rates, and an increased specific impulse, with film shape having no impact on thrust. Notably, the Pu-238 decay sail could reduce the travel time for a 401-au journey from 111.9 years to 96.3 years. The simplicity, high specific impulse, and modular construction of alpha particle micro-propulsion devices make them well-suited for precise, long-duration missions. Future research will explore thrust-atmospheric drag equilibrium for low Earth orbit satellites.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111795"},"PeriodicalIF":1.6,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of B2O3 incorporation on the structural, mechanical and radiation shielding properties of TeO2 Based bioglasses","authors":"Esmanur Oruc Ulas ,&nbsp;Abuzer Acikgoz ,&nbsp;Bulent Aktas ,&nbsp;Yusuf Kavun","doi":"10.1016/j.apradiso.2025.111799","DOIUrl":"10.1016/j.apradiso.2025.111799","url":null,"abstract":"<div><div>This study investigates the structural, mechanical, and radiation shielding properties of a series of novel bio glasses with the composition (55-x)TeO₂-20Na₂O-10CaO-15P₂O₅-xB₂O₃ (where x = 0, 3, 5, 10, and 20 mol%). The aim was to evaluate the effect of B₂O₃ addition on these properties. Empirical methods were used for calculating the mechanical and elastic properties. XRD analysis confirmed the amorphous nature of the glasses, while FTIR spectroscopy revealed the presence of characteristic functional groups associated with TeO₂ and B₂O₃. The results indicate that B₂O₃ incorporation significantly reduces the glass density (from 4.24 g/cm³ to 3.18 g/cm³) and enhances molar volume (from 29.963 cm³/mol to 34.302 cm³/mol), leading to a less compact glass structure<strong>.</strong> The mechanical properties were also affected, with fracture toughness decreasing (from 1.367 MPa m^1/2 to 1.280 MPa m^1/2) and hardness increasing (from 3.091 GPa to 3.207 GPa). Regarding radiation shielding performance, the Linear Attenuation Coefficient (LAC) values decreased with increasing B₂O₃ content, indicating a deterioration in shielding effectiveness due to the lower effective atomic number of B₂O₃ compared to TeO₂. These findings demonstrate that while B₂O₃ improves mechanical hardness and molar volume, it compromises radiation shielding properties by reducing glass density and attenuation capacity.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"221 ","pages":"Article 111799"},"PeriodicalIF":1.6,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}