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Comprehensive performance assessment of Bi- and Pb-based alloys for enhanced Gamma-Ray and neutron shielding applications 用于增强伽马射线和中子屏蔽应用的Bi和pb基合金的综合性能评估
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113006
Ghada ALMisned , Gulfem Susoy , Duygu Sen Baykal , G. Kilic , Ömer Güler , H.O. Tekin
{"title":"Comprehensive performance assessment of Bi- and Pb-based alloys for enhanced Gamma-Ray and neutron shielding applications","authors":"Ghada ALMisned ,&nbsp;Gulfem Susoy ,&nbsp;Duygu Sen Baykal ,&nbsp;G. Kilic ,&nbsp;Ömer Güler ,&nbsp;H.O. Tekin","doi":"10.1016/j.radphyschem.2025.113006","DOIUrl":"10.1016/j.radphyschem.2025.113006","url":null,"abstract":"<div><div>This comprehensive study investigates the radiation attenuation properties of various bismuth (Bi) and lead (Pb) based alloys, with a focus on identifying superior shielding materials for nuclear safety and industrial radiation protection. The research encompasses an in-depth analysis of seven alloys, namely GTSB5, Sn%40Bi, Bi50Sn50, A1, PbAl-4, Safe Alloy, and P1, assessing their efficacy in gamma-ray and neutron attenuation. Utilizing some computational tools, various parameters such as mass and linear attenuation coefficients, half and tenth value layer values, effective atomic and electron numbers, buildup factors, and transmission values were evaluated. Our findings highlight Alloy P1's outstanding performance, attributed to its high density (11.05 g/cm<sup>3</sup>) and optimized elemental composition, including Silver (Ag). In addition, P1 demonstrates exceptional gamma-ray attenuation across multiple energy spectra and superior neutron shielding capabilities, evidenced by its significant fast neutron removal cross-section (∑<sub>R</sub>, 0.12003 1/cm). The study revealed that the addition of Ag enhances the photon and beta particle absorption capacity, positioning P1 as a promising material in radiation shielding applications. The correlations between alloy density and gamma-ray shielding properties were particularly notable, with P1's density contributing to its enhanced attenuation capabilities. Furthermore, P1's lower half value layers (1.14469 cm) and tenth value layers (3.80256 cm) at 15 MeV indicate its efficiency in reducing radiation intensity with minimal material thickness.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113006"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Helium bubble formation in RAFM steel: Role of helium concentration under constant peak displacement damage dose RAFM钢中氦泡的形成:恒定峰值位移损伤剂量下氦浓度的作用
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113035
Meng Yu , Xiaokang Liu , Hongzhen Liu , Shuoxue Jin , Yi Xiong , Liping Guo , Weiping Zhang
{"title":"Helium bubble formation in RAFM steel: Role of helium concentration under constant peak displacement damage dose","authors":"Meng Yu ,&nbsp;Xiaokang Liu ,&nbsp;Hongzhen Liu ,&nbsp;Shuoxue Jin ,&nbsp;Yi Xiong ,&nbsp;Liping Guo ,&nbsp;Weiping Zhang","doi":"10.1016/j.radphyschem.2025.113035","DOIUrl":"10.1016/j.radphyschem.2025.113035","url":null,"abstract":"<div><div>Reduced-activation ferritic/martensitic (RAFM) steel has been regarded as a primary candidate structural material for fusion reactors due to its excellent mechanical properties and good resistance to irradiation induced swelling. However, significant discrepancies exist regarding the influence of helium on the formation of irradiation defects in RAFM steel. In this study, He<sup>+</sup> irradiation experiments at 18 keV, 50 keV and 100 keV were conducted at 450 °C to investigate the effects of varying helium concentrations on defect formation under the same peak displacement damage dose. By adjusting the irradiation fluence, the irradiations with different He<sup>+</sup> energies were controlled to produce identical peak displacement damage doses but different peak helium concentrations. The results showed that compared to 50 keV He<sup>+</sup> irradiation, 18 keV He<sup>+</sup> irradiation, which introduced a higher helium concentration, led to larger helium bubble size, higher bubble density and greater swelling. This indicates that under the same peak displacement damage dose, a higher helium concentration significantly promotes the nucleation and growth of helium bubbles, thereby enhancing the swelling of the material. It is noteworthy that, despite the lowest helium concentration, 100 keV He<sup>+</sup> irradiation resulted in the largest helium bubble size, highest bubble density and greatest swelling among the three irradiation energies. This may be attributed to the higher primary knock-on atom (PKA) energy associated with the 100 keV He<sup>+</sup> irradiation, which can promote the nucleation and growth of irradiation induced defects. Thus, the promoting effect of higher PKA energy on defect formation appears to dominate in this case.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113035"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144221715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of colorless phosphate glass doped with Bi2O3 for lead-free radiation shielding in X-Rayand gamma-rays medical applications: A study using PHITS Monte Carlo simulation and experimental analysis 用于x射线和伽马射线医疗无铅辐射屏蔽的Bi2O3掺杂无色磷酸盐玻璃的制备:基于PHITS蒙特卡罗模拟和实验分析的研究
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113015
O. Ornketphon , S. Kaewjaeng , P. Meejitpaisan , C. Jumpee , S. Yabsantia , T. Chusin , W. Chaiphaksa , H.J. Kim , J. Kaewkhao
{"title":"Fabrication of colorless phosphate glass doped with Bi2O3 for lead-free radiation shielding in X-Rayand gamma-rays medical applications: A study using PHITS Monte Carlo simulation and experimental analysis","authors":"O. Ornketphon ,&nbsp;S. Kaewjaeng ,&nbsp;P. Meejitpaisan ,&nbsp;C. Jumpee ,&nbsp;S. Yabsantia ,&nbsp;T. Chusin ,&nbsp;W. Chaiphaksa ,&nbsp;H.J. Kim ,&nbsp;J. Kaewkhao","doi":"10.1016/j.radphyschem.2025.113015","DOIUrl":"10.1016/j.radphyschem.2025.113015","url":null,"abstract":"<div><div>In this study, glasses with the composition (65–x)P<sub>2</sub>O<sub>5</sub>–5CaF<sub>2</sub>–10NaF–10KF–10AlF<sub>3</sub>–xBi<sub>2</sub>O<sub>3</sub> (x = 0, 5, 10, 15 mol%) were synthesized using a conventional melt-quenching technique followed by melting at 1200 °C for 3 hrsand annealing 500 °C for 3 hrs, aimed at photon shielding applications. The resulting glasses remained transparent and colorless glasses, with increasing of Bi<sub>2</sub>O<sub>3</sub> concentrations. Radiation shielding parameters (linear attenuation coefficient (μ), mass attenuation coefficients (μ<sub>m</sub>), effective atomic number (Z<sub>eff</sub>), effective electron density (N<sub>eff</sub>), and half-value layer (HVL)) with increasing of Bi<sub>2</sub>O<sub>3</sub> concentrations in glasses were studied using gamma and X-ray sources. Using gamma sources, the μ<sub>m</sub>, Z<sub>eff</sub>, and N<sub>eff</sub> increased, while HVL decreased. X-ray shielding performance showed that as the μ<sub>m</sub> increased, the HVL decreased. As the Bi<sub>2</sub>O<sub>3</sub> concentrations increase, the concentration at 15 mol% of Bi<sub>2</sub>O<sub>3</sub> has shown the best radiation shielding performance when compared to standard materials at 120 kVp. Consequently, the concentration at 15 mol% of Bi<sub>2</sub>O<sub>3</sub> in glass systems are promising candidates for radiation shielding materials innovation in future.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113015"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of temperature on the decomposition of PTFE induced by electron beam irradiation 温度对电子束辐照下聚四氟乙烯分解的影响
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113029
Hao Yu, Akira Idesaki, Kimio Yoshimura, Yue Zhao, Yasunari Maekawa
{"title":"Effects of temperature on the decomposition of PTFE induced by electron beam irradiation","authors":"Hao Yu,&nbsp;Akira Idesaki,&nbsp;Kimio Yoshimura,&nbsp;Yue Zhao,&nbsp;Yasunari Maekawa","doi":"10.1016/j.radphyschem.2025.113029","DOIUrl":"10.1016/j.radphyschem.2025.113029","url":null,"abstract":"<div><div>The effect of temperature on the irradiation-induced decomposition of polytetrafluoroethylene (PTFE), a representative fluorocarbon polymer, was investigated to improve the energy efficiency of the recycling process. The weight loss of PTFE was 18 %, 33 %, 64 %, and 91 % by the irradiation with a dose of 7.5 MGy (dose rate:1.0 kGy/s) at 30 °C, 120 °C, 200 °C, and 270 °C, respectively. During the electron beam (EB) irradiation of PTFE powders under an oxygen atmosphere, a greater weight loss of PTFE was observed at higher irradiation temperatures. At 370 °C, PTFE powder is completely converted to gaseous components with an absorbed dose of 5.0 MGy; the primary product was identified as an oxidized fluorocarbon (C<sub>n</sub>F<sub>2n</sub>O<sub>x</sub>). A lower dose rate (0.1 kGy/s) reduced the required absorbed dose for PTFE decomposition to 80 % level. Post-irradiation analyses of the PTFE residues using TGA, SEM-EDX, and FT-IR consistently showed that higher irradiation temperatures accelerated the production of oxidized fluorocarbons and further oxidized gaseous products evaporating from the PTFE residue. XRD analysis showed that high-temperature irradiation also increased the crystallite size to 37 ± 5 nm after irradiation at 270 °C, which is nearly double the size of non-irradiated PTFE (21 ± 2 nm). High-temperature irradiation significantly accelerated the oxidation and weight loss of PTFE, offering a promising method for enhancing the energy efficiency of PTFE recycling.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113029"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
What imaging modality is best for diagnostic accuracy of axillary lymph node in breast cancer patients? 乳腺癌患者腋窝淋巴结的诊断准确性,哪种影像学方式最好?
IF 2.9 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113016
Shyma M. Alkhateeb, Njoud Aldusary, Maryam M. Alkhateeb, Manal A. Alghamdi, Tasneem Elsayed Hassan, Laila Ashkar
{"title":"What imaging modality is best for diagnostic accuracy of axillary lymph node in breast cancer patients?","authors":"Shyma M. Alkhateeb, Njoud Aldusary, Maryam M. Alkhateeb, Manal A. Alghamdi, Tasneem Elsayed Hassan, Laila Ashkar","doi":"10.1016/j.radphyschem.2025.113016","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2025.113016","url":null,"abstract":"The first location where the breast cancer commonly spreads is the axillary lymph nodes, therefore accurate detection and staging of axillary lymph nodes in breast cancer by using the appropriate imaging modality are essential for treatment planning, prognosis, and minimizing unnecessary radiation exposure.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"11 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization and evaluation of tissue-equivalent materials for heterogeneous mouse model phantoms in radiobiology experiments 放射生物学实验中异质小鼠模型幻影的组织等效材料的表征和评价
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113034
John Paul C. Cabahug , Shalaine S. Tatu-Qassim , Laureen Ida M. Ballesteros , Jose Bernardo L. Padaca III , Ulysses B. Ante , Vladimir M. Sarmiento , Earl John T. Geraldo , Chitho P. Feliciano
{"title":"Characterization and evaluation of tissue-equivalent materials for heterogeneous mouse model phantoms in radiobiology experiments","authors":"John Paul C. Cabahug ,&nbsp;Shalaine S. Tatu-Qassim ,&nbsp;Laureen Ida M. Ballesteros ,&nbsp;Jose Bernardo L. Padaca III ,&nbsp;Ulysses B. Ante ,&nbsp;Vladimir M. Sarmiento ,&nbsp;Earl John T. Geraldo ,&nbsp;Chitho P. Feliciano","doi":"10.1016/j.radphyschem.2025.113034","DOIUrl":"10.1016/j.radphyschem.2025.113034","url":null,"abstract":"<div><h3>Purpose</h3><div>Advanced manufacturing techniques such as 3D printing have been employed in developing small animal phantoms for preclinical radiobiology studies. For accurate dosimetry, 3D printing materials need to mimic the radiological properties of a real mouse model. In this study, various combinations of 3D printing materials were evaluated in terms of tissue equivalence and compared with known reference standards to determine the best formulation for making a 3D-printed heterogenous mouse phantom.</div></div><div><h3>Methodology</h3><div>The tissue equivalence of fourteen (14) test materials of varying compositions and ratios were evaluated: polyurethane-resin and stereolithographic (SLA) clear resin lattice structure for lungs, resin-hardener for soft tissues, and resin-hydroxyapatite (HAP) and resin-montmorillonite (MMT) nanoclay-resin for bone. A calibration curve of Hounsfield units (HU) and relative electron density (RED) was determined using the computed tomography (CT) and GAMMEX 467 Tissue Characterization Phantom. The elemental compositions and mass attenuation coefficients were determined by the NIST XCOM Photon Cross Sections Database, and these values were submitted to the Phy-X/PSD Database for effective atomic number (Z<sub>eff</sub>) determination. The results were then compared with the ICRU Report 44, GAMMEX, and NIST XCOM.</div></div><div><h3>Results</h3><div>For lung tissue, the PU-Resin (1:1.3) ratio has an RED of 0.30 ± 0.02, differing by 3.96 % with GAMMEX lung (LN300). For soft tissue, the resin-hardener (1:1) ratio RED is 1.07 ± 0.00, with a 4.36 % difference compared to GAMMEX muscle. For bone, resin with 30 % HAP has an RED of 1.33 ± 0.01 with a 3.61 % difference compared to GAMMEX (CB2 -30 % CaCO<sub>3</sub>). The mass densities of the above materials were 0.36 ± 0.01, 1.07 ± 0.01, and 1.39 ± 0.01 g/cm<sup>3</sup>, differing by 5.98 %, 1.08 %, and 3.95 % with ICRU 44, respectively. In terms of effective atomic number (Z<sub>eff</sub>), there is no significant difference between PU-resin (1:1.3) (p = 0.9466) compared to ICRU 44 lung, resin-hardener (1:1) (p = 0.4236) compared to ICRU 44 soft tissue, and resin with 30 % HAP (p = 0.9727) compared to NIST XCOM (B-100 bone equivalent). The mass attenuation coefficients of PU-resin (1:1.3), resin-hardener (1:1), and resin with 30 % HAP were found to differ by up to 9 % for preclinically relevant X-ray energies between 80 keV and 300 keV.</div></div><div><h3>Conclusion</h3><div>The radiological tissue equivalence of PU-resin (1:1.3) for lung, resin-hardener (1:1) for soft tissue, and a resin with 30 % HAP for bone showed good agreement in terms of CT number, CT-derived material density, RED, effective atomic number, and mass attenuation coefficient compared to reference standards such as the GAMMEX, ICRU Report 44, and NIST XCOM. The identified materials will be used to create a heterogeneous mouse phantom for preclinical dose verification.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113034"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermoluminescence and optically stimulated luminescence of CaSO4:Mn,Tb with different dopant concentrations 不同掺杂浓度的CaSO4:Mn,Tb的热致发光和光激发发光
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113032
A.M.B. Silva , D.N. Souza , L.V.E. Caldas
{"title":"Thermoluminescence and optically stimulated luminescence of CaSO4:Mn,Tb with different dopant concentrations","authors":"A.M.B. Silva ,&nbsp;D.N. Souza ,&nbsp;L.V.E. Caldas","doi":"10.1016/j.radphyschem.2025.113032","DOIUrl":"10.1016/j.radphyschem.2025.113032","url":null,"abstract":"<div><div>This study systematically evaluates the thermoluminescence (TL) and optically stimulated luminescence (OSL) properties of CaSO<sub>4</sub> crystals doped with manganese (Mn) and terbium (Tb), focusing on dopant concentrations within the ranges of Mn (0.1 mol % – 2 mol %) and Tb (0.05 mol % – 1 mol %). Synthesized via the slow evaporation route, this investigation is part of an ongoing experimental series initiated by Silva et al. (2022), exploring CaSO<sub>4</sub>:Mn,Tb crystals at a concentration of 0.1 mol %, validating their properties for dosimetric purposes. A structural phase identification was conducted using X-ray diffraction and energy-dispersive spectroscopy (EDS) spectra confirming the presence of Tb<sup>3+</sup> and Mn<sup>2+</sup> ions in the crystalline matrices. Dosimetric characterization utilized pellets prepared by incorporating Teflon into the phosphors. In-depth investigations involved analyzing TL glow curves and Continuous Wave Optically Stimulated Luminescence (CW-OSL) curves. Observations revealed that TL intensity increased as the co-doped concentration of Tb decreased while maintaining the concentration of Mn constant, in both visible and UV regions. Conversely, at a constant terbium concentration, increasing Mn<sup>2+</sup> concentration enhanced the sensitivity of low-temperature TL traps in the visible region. However, at higher Mn concentrations, such as 1 % and 2 %, TL intensity in deeper traps decreased. In the UV region, TL signals remained stable as the concentration of Mn<sup>2+</sup> increased from 0.1 % to 0.5 %, with only a slight shift in peak temperatures. Concentrations above 1 % led to a decrease in TL intensity. All samples produced suitable OSL curves. Fixing Mn<sup>2+</sup> at 1 mol % and decreasing Tb<sup>3+</sup> concentration also resulted in increased OSL signals. The optimal Mn<sup>2+</sup> concentration, with Tb<sup>3+</sup> fixed at 0.1 mol %, was found to be at 0.1 mol %, where OSL sensitivity was maximized. This research underscores the importance of optimizing dopant concentrations to enhance the potential of these phosphors for precise and reliable dosimetry, thereby advancing both the understanding of these materials and their potential for further development in the field of radiation dosimetry.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113032"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Ba0.93Ca0.04La0.03Sn0.1Ti0.9O3 addition on structural and electrical properties of lead-free 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 piezoelectric ceramics 添加Ba0.93Ca0.04La0.03Sn0.1Ti0.9O3对无铅0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3压电陶瓷结构和电学性能的影响
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113011
Puripat Kantha , Muangjai Unruan , Tawee Tunkasiri , Kamonpan Pengpat , Usa Sukkha , Panupong Jaiban , Jintara Padchasriand , Sumeth Siriroj , Pinit Kidkhunthod , Nuttapon Pisitpipathsin
{"title":"Effect of Ba0.93Ca0.04La0.03Sn0.1Ti0.9O3 addition on structural and electrical properties of lead-free 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 piezoelectric ceramics","authors":"Puripat Kantha ,&nbsp;Muangjai Unruan ,&nbsp;Tawee Tunkasiri ,&nbsp;Kamonpan Pengpat ,&nbsp;Usa Sukkha ,&nbsp;Panupong Jaiban ,&nbsp;Jintara Padchasriand ,&nbsp;Sumeth Siriroj ,&nbsp;Pinit Kidkhunthod ,&nbsp;Nuttapon Pisitpipathsin","doi":"10.1016/j.radphyschem.2025.113011","DOIUrl":"10.1016/j.radphyschem.2025.113011","url":null,"abstract":"<div><div>The doping of other materials into the structure of BCZT ceramics can improve the electrical properties. The lead-free piezoelectric ceramics in the (1-x)BCZT–xBCLST binary system, where x = 0.00, 0.01, 0.03, 0.05, and 0.07 mol, were synthesized using a two-step mixed oxide method. Initially, pure phases of 0.5Ba(Zr<sub>0.2</sub>Ti<sub>0.8</sub>)O<sub>3</sub>-0.5(Ba<sub>0.7</sub>Ca<sub>0.3</sub>)TiO<sub>3</sub> (BCZT) and Ba<sub>0.93</sub>Ca<sub>0.04</sub>La<sub>0.03</sub>Sn<sub>0.1</sub>Ti<sub>0.9</sub>O<sub>3</sub> (BCLST) powders were separately prepared by mixed oxide and conventional solid-state reaction methods. X-ray diffraction patterns and Ti K-edge X-ray Absorption Near-Edge Structure (XANES) spectra revealed structural distortions in BCLST-doped ceramics. The electrical properties including dielectric, piezoelectric, and ferroelectric properties were evaluated. Besides, the dielectric constant and dielectric loss at room temperature of BCZT–BCLST ceramics were enhanced with increasing BCLST content. The dielectric properties at room temperature improved with increasing BCLST concentration from x = 0.00 to x = 0.03 mol, with the maximum dielectric constant rising from 1408 to 2552—an increase of approximately 81 %. The hysteresis P–E loop of BCZT–BCLST ceramics exhibited a slim loop, with a maximum remanent polarization (P<sub>r</sub>) of 7.22 μC/cm<sup>2</sup> observed at x = 0.03 mol. The optimal doping condition for BCLST in BCZT ceramics was found at 0.03 mol, yielding the highest piezoelectric coefficient (d<sub>33</sub>) of 235 pC/N—an improvement of approximately 9 % compared to the undoped sample (x = 0.00).</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113011"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144221639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tailoring the optical, mechanical, and gamma-ray-attenuation performance of G-T-B glasses by doping nano rare-earth (Gd, Yb, Tm) 通过掺杂纳米稀土(Gd, Yb, Tm)调整G-T-B玻璃的光学、机械和γ射线衰减性能
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113019
M.H.A. Mhareb , M. Kh Hamad , Rahman I. Mahdi , M.I. Sayyed , Howaida Mansour , Abed Jawad Kadhim , Kawa M. Kaky
{"title":"Tailoring the optical, mechanical, and gamma-ray-attenuation performance of G-T-B glasses by doping nano rare-earth (Gd, Yb, Tm)","authors":"M.H.A. Mhareb ,&nbsp;M. Kh Hamad ,&nbsp;Rahman I. Mahdi ,&nbsp;M.I. Sayyed ,&nbsp;Howaida Mansour ,&nbsp;Abed Jawad Kadhim ,&nbsp;Kawa M. Kaky","doi":"10.1016/j.radphyschem.2025.113019","DOIUrl":"10.1016/j.radphyschem.2025.113019","url":null,"abstract":"<div><div>Three transparent TeO<sub>2</sub>–GeO<sub>2</sub>–B<sub>2</sub>O<sub>3</sub>–MgO glasses, each doped with nano-sized rare-earth oxides including gadolinium oxide (Gd<sub>2</sub>O<sub>3</sub>), thulium oxide (Tm<sub>2</sub>O<sub>3</sub>), and ytterbium oxide (Yb<sub>2</sub>O<sub>3</sub>), were fabricated to evaluate their optical, mechanical, and ionizing-radiation-shielding properties. Glass samples were assigned codes Gd, Yb, and Tm. While the mechanical characteristics were computed theoretically depending on the Makishima and Mackenzie approach, optical qualities were assessed using UV–Vis absorption spectra. The Yb and Tm samples recorded the lowest and highest band gap values. At the same time, the mechanical properties showed slight variation in mechanical properties. For example, the Young modulus for Gd, Yb, and Tm samples are 88.675, 88.849, and 88.794 GPa. Following the natural behavior of photon interaction with matter, the MAC lowers with photon energy. Various ionizing radiation parameters were deduced from the MAC and density. For Gd, Tm, and Yb samples, correspondingly, the obtained LAC value at 0.5 MeV is 0.3431 cm–1, 0.3508 cm<sup>−1</sup>, and 0.35293 cm<sup>−1</sup>. With an HVL of 1.96 cm at 0.5 MeV, the Yb sample exhibits better shielding capabilities. Furthermore, the FNRCS for the Yb glass sample is 0.11012 cm<sup>−1</sup>, higher than that of other conventional materials like ordinary concrete, graphite, and water. The findings underscore the efficacy of heavy metal oxide-doped glasses as radiation shielding materials.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113019"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a radiation installation digital twin for simulation of radiation experiments on accelerators 用于加速器辐射实验模拟的辐射装置数字孪生体的研制
IF 2.8 3区 物理与天体物理
Radiation Physics and Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.radphyschem.2025.113024
Yu.S. Pavlov, P.A. Bystrov
{"title":"Development of a radiation installation digital twin for simulation of radiation experiments on accelerators","authors":"Yu.S. Pavlov,&nbsp;P.A. Bystrov","doi":"10.1016/j.radphyschem.2025.113024","DOIUrl":"10.1016/j.radphyschem.2025.113024","url":null,"abstract":"<div><div>A software-hardware complex (SHC) for the control of radiation technology installation based on the UELV-10-10-S-70 accelerator, operating as a digital twin of this apparatus, is presented. SHC is suggested for the preparation and performance of radiation experiments and commercial irradiation. We consider the conditions and techniques for increasing the efficiency of an installation participating in fundamental research and applied work. The goal of this investigation is to increase the efficiency and safety of radiation exposure of goods, as well as to automate the workflow of the installation, placed at the center of the collective use of the Frumkin Institute of Physical Chemistry and Electrochemistry RAS (IPCE RAS). The developed SHC expands the capabilities of the aforementioned installation during nonstandard experiments. It contains four modules devoted to development, database formation and expansion, automation and control of irradiation of products, as well as modeling and simulation of those while working in digital twin mode.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113024"},"PeriodicalIF":2.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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