{"title":"Evaluation of gamma- and neutron radiation emissions during proton irradiation of typical metals in semiconductor manufacturing","authors":"Andrea Fugger , Moriz Jelinek , Markus Valtiner","doi":"10.1016/j.nimb.2025.165777","DOIUrl":"10.1016/j.nimb.2025.165777","url":null,"abstract":"<div><div>Proton implantation has multiple uses in semiconductor manufacturing. Implanting through metallization can create problems in terms of radiation safety. Gamma and neutron emissions for proton irradiated stacks of Ti, TiN, W, AlCu, Si, Co with incident proton energies of 1<!--> <!-->MeV to 2<!--> <!-->MeV were measured. The most intense gamma lines resulted from Al, Si, F and Ti. Despite being present in trace amounts, F was found to contribute significantly to the gamma emission. Our results indicate a need for new metallization concepts to be used together with proton implantation.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165777"},"PeriodicalIF":1.4,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604440","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}
N. Kishi , S. Shinohara , Y. Sugisawa , K. Yamamoto , S. Kobayashi , R. Shimizu , T. Hitosugi , D. Sekiba
{"title":"Application of 7Li(p, α)4He NRA for thin film type all-solid-state Li battery; reinvestigation of 7Li(p, α)4He cross-section and optimization of experimental arrangement","authors":"N. Kishi , S. Shinohara , Y. Sugisawa , K. Yamamoto , S. Kobayashi , R. Shimizu , T. Hitosugi , D. Sekiba","doi":"10.1016/j.nimb.2025.165787","DOIUrl":"10.1016/j.nimb.2025.165787","url":null,"abstract":"<div><div>The <sup>7</sup>Li(p, α)<sup>4</sup>He reaction is used to observe the Li behavior during the discharge and recharge process in the thin-film-type all-solid-state Li battery. The incident proton beam energy used in this nuclear reaction analysis (NRA) was set at 1.5 MeV. The emitted α-particle in NRA and backscattered proton in Rutherford backscattering spectrometry (RBS) were detected by the same silicon surface detector (SSD) simultaneously. First of all, the cross sections of <sup>7</sup>Li(p, α)<sup>4</sup>He for the proton energies between 1.0 and 1.5 MeV were experimentally determined in order to make quantitative analyses. Next, the emission angle of the α-particle with respect to the surface normal was explored to determine the optimum angle to distinguish the layers in the battery sample. By using the obtained cross-sections and optimized emission angle, the <sup>7</sup>Li NRA profiles on the battery sample at the charged state and discharged state were taken. The Li migration in the battery due to these processes was clearly observed. The results implied that whole the electrolyte seemed to play the role of both the electrolyte and the anode.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165787"},"PeriodicalIF":1.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597208","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}
Chengwen Fu , Xiaoping Dong , Wende Huang , Yaosen Liu , Yao Ma , Mingmin Huang , Zhimei Yang , Yun Li , Min Gong
{"title":"TCAD simulation method on single-event burnout of SiC JBS diodes","authors":"Chengwen Fu , Xiaoping Dong , Wende Huang , Yaosen Liu , Yao Ma , Mingmin Huang , Zhimei Yang , Yun Li , Min Gong","doi":"10.1016/j.nimb.2025.165797","DOIUrl":"10.1016/j.nimb.2025.165797","url":null,"abstract":"<div><div>The Silicon Carbide (SiC) Junction Barrier Schottky (JBS) diode is susceptible to Single-Event Burnout (SEB) during heavy ion events. To deepen the comprehension of the mechanisms behind SEB, a reasonable simulation method is introduced, where a TCAD device model is established with a good agreement with measured electric characteristics, the Gaussian eigenvalues of the heavy ion transportation energy distribution in the vertical track direction are determined by the Geant4 simulation, and the surface heat dissipation is considered. The simulation method is verified by experiment results. According to experiment results, under SEB condition, the simulated temperature of <strong><em>T<sub>peak_SiC</sub></em></strong> (K) is in the range of 2093 ∼ 3341 K, the simulated temperature of <em>T</em><sub>peak_contact</sub> (K)is in the range of 1081 ∼ 1465 K, and the cause of this variation range has been analyzed and discussed.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165797"},"PeriodicalIF":1.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597207","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}
{"title":"Nickel doped magnesium oxide nanoparticles: synthesis, characterization, and thermoluminescence dosimetry features in gamma irradiation","authors":"R. Adibi , M. Zahedifar , E. Sadeghi , S. Harooni","doi":"10.1016/j.nimb.2025.165782","DOIUrl":"10.1016/j.nimb.2025.165782","url":null,"abstract":"<div><div>The novel Ni-doped magnesium oxide nanoparticles were synthesized using the co-precipitation technique and optimized across various dopant concentrations and annealing conditions. Unlike previous studies, this work systematically investigates the influence of Ni concentration and thermal treatment on thermoluminescence (TL) properties of the synthesized MgO: Ni nanoparticles. The crystalline properties, morphology, composition, and structure of the fabricated samples were characterized. XRD analysis revealed a pure cubic MgO phase with crystallite sizes below 50 nm. After 20 Gy gamma irradiation, the sample doped with 1 mol% Ni and annealed at 700 °C exhibited the highest integrated TL signal. The material showed a linear gamma dose response up to 1000 Gy and excellent signal stability over 30 days. Kinetic parameters were determined using curve fitting based on a general-order kinetic model. These findings highlight the potential of MgO: Ni nanoparticles as efficient phosphor for high dose dosimetry.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165782"},"PeriodicalIF":1.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587768","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}
E.M. Muller , G.A. Carini , L. Fabris , G. Giacomini , J. Kierstead , S.M. McConchie , D.A. Pinelli , S. Rescia , E. Rossi
{"title":"Charge collection efficiency of diamond and silicon sensors irradiated with alpha particles","authors":"E.M. Muller , G.A. Carini , L. Fabris , G. Giacomini , J. Kierstead , S.M. McConchie , D.A. Pinelli , S. Rescia , E. Rossi","doi":"10.1016/j.nimb.2025.165778","DOIUrl":"10.1016/j.nimb.2025.165778","url":null,"abstract":"<div><div>To evaluate the viability of using semiconductors as sensor materials in a detector for the Associated Particle Imaging technique, the radiation hardness of silicon and diamond diodes to alpha particles has been assessed. The detector lifetimes for both silicon and diamond sensors were measured under the prolonged exposure to alpha particles emitted by an <sup>241</sup>Am source. The silicon detector was exposed to alpha radiation for approximately two months, reaching an accumulated fluence of <span><math><mrow><mo>∼</mo><mn>1</mn><mo>.</mo><mn>5</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>12</mn></mrow></msup><mspace></mspace><mi>α</mi><mspace></mspace><msup><mrow><mtext>cm</mtext></mrow><mrow><mo>−</mo><mn>2</mn></mrow></msup></mrow></math></span>. Additionally, by using a high purity single-crystal diamond with coplanar electrodes operating with full charge collection, the diamond detector response was measured over approximately ten months reaching an accumulated fluence of over <span><math><mrow><mn>6</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>12</mn></mrow></msup><mspace></mspace><mi>α</mi></mrow></math></span> cm<span><math><msup><mrow></mrow><mrow><mo>−</mo><mn>2</mn></mrow></msup></math></span>.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165778"},"PeriodicalIF":1.4,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572702","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}
T. Hankins , A.B. McIntosh , K. Hagel , A.D. Abbott , A. Alvarez , R. Bartsch , M. McClure , S. Regener , M.Q. Sorensen , S.J. Yennello
{"title":"Thickness and uniformity mapping of thin foils using resistive silicon detectors","authors":"T. Hankins , A.B. McIntosh , K. Hagel , A.D. Abbott , A. Alvarez , R. Bartsch , M. McClure , S. Regener , M.Q. Sorensen , S.J. Yennello","doi":"10.1016/j.nimb.2025.165788","DOIUrl":"10.1016/j.nimb.2025.165788","url":null,"abstract":"<div><div>Alpha energy loss is a common tool used for measuring target thicknesses. However, these measurements are often made without position information, which either forfeits knowledge of material uniformity and local thickness or requires a prohibitive number of measurements per target to partially recover this information. In consideration of this, a method for measuring position-dependent thicknesses is described in this work; by using the position-sensitivity of the dual-axis duo-lateral (DADL) silicon detector, thicknesses across the entire face of the material can be measured to sub-mm precision with a single measurement. Several examples are presented using a number of targets with varying characteristics, which altogether demonstrate the precision, accuracy, and versatility of this technique.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165788"},"PeriodicalIF":1.4,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572709","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}
Shoupeng Wang , Nan Pan , Songqi Gu , Yu Wang , Yuying Huang
{"title":"Deep learning-based electronics architecture for pulse pile-up correction in synchrotron radiation spectroscopic detection","authors":"Shoupeng Wang , Nan Pan , Songqi Gu , Yu Wang , Yuying Huang","doi":"10.1016/j.nimb.2025.165730","DOIUrl":"10.1016/j.nimb.2025.165730","url":null,"abstract":"<div><div>Synchrotron light sources have become indispensable tools for microstructural analysis, material characterization, and dynamic process observation, owing to their high photon flux and broad wavelength range. However, the increased photon flux introduces challenges in maintaining energy resolution in spectroscopic detection, particularly due to pulse pile-up at high count rates. This paper proposes a novel hybrid architecture that integrates deep learning algorithms with FPGA hardware to achieve real-time pulse pile-up correction in synchrotron radiation spectroscopic detectors. By employing the Transformer algorithm within an FPGA and leveraging GPU-based retraining to adapt to varying count rates, the system dynamically optimizes energy resolution. Experimental validation with data from the VortexEX90 detector demonstrates that the proposed approach achieves an energy resolution of approximately 126.8 eV at 60 kcps and 135.5 eV at 1 Mcps for incident photons of 22 keV, ensuring good performance across a wide range of count rates. This work provides a scalable, high-efficiency solution for pulse pile-up correction, advancing the capabilities of synchrotron spectroscopic detection under high-count-rate conditions.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165730"},"PeriodicalIF":1.4,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562787","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}
{"title":"Thermoluminescence properties of Y3Al5O12:Ce transparent ceramics at different linear energy transfers","authors":"Kensei Ichiba , Masanori Koshimizu , Go Okada , Yutaka Fujimoto , Kenichi Watanabe , Yusuke Koba , Takumi Kato , Daisuke Nakauchi , Noriaki Kawaguchi , Takayuki Yanagida","doi":"10.1016/j.nimb.2025.165784","DOIUrl":"10.1016/j.nimb.2025.165784","url":null,"abstract":"<div><div>Thermoluminescence (TL) properties of Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>(YAG):Ce with different Ce concentrations after irradiations of gamma rays or heavy charged particles investigated analyzed. The TL glow curves were obtained after irradiations of gamma rays at different doses and the heavy charged particles at different linear energy transfers (LETs). The glow curves significantly depended on the gamma-ray dose or LET for YAG:Ce with low Ce concentration. This behavior indicates that the preferential trap centers are different for irradiations of gamma rays and heavy charged particles. The TL intensity decreased significantly with LET. The decrease can be explained with competition between the trapping of electron-hole pairs, which will result in TL upon heating, and the quenching of electron-hole pairs owing to excited states interaction. Notably, the decrease in the TL intensity with LET was suppressed at high Ce concentration. This is explained with faster trapping of electron-hole pairs becuase Ce<sup>3+</sup> ions act as hole trapping centers, which results in a suppressed contribution of the quenching in the above-mentioned competition.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165784"},"PeriodicalIF":1.4,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535792","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}
{"title":"Prediction and interpretation of (n,2n) reaction cross sections using a KOA-XGBoost-SHAP machine learning framework","authors":"YanBang Tang","doi":"10.1016/j.nimb.2025.165789","DOIUrl":"10.1016/j.nimb.2025.165789","url":null,"abstract":"<div><div>Accurate prediction of (n,2n) reaction cross sections is crucial for nuclear applications but faces challenges due to experimental difficulties and data scarcity. This study proposes a novel triple-hybrid machine learning framework, KOA-XGBoost-SHAP, to address these challenges. The framework integrates the Kepler Optimization Algorithm (KOA) for hyperparameter tuning, the XGBoost model for prediction, and SHapley Additive exPlanations (SHAP) for interpretability. Using 1,282 (n,2n) cross-section data points from the EXFOR database, covering incident neutron energies (EN) from 1 to 375 MeV and target nuclides with Z from 1 to 94 and A from 2 to 239, six ML models were optimized using KOA. The KOA-XGBoost model demonstrated superior predictive accuracy (R<sup>2</sup> = 0.94, RMSE = 152.99 mb) when benchmarked against the EXFOR test set. Notably, its direct agreement with these raw EXFOR experimental data was also better than that achieved by ENDF/B-VII.1 evaluations (R<sup>2</sup> = 0.84, RMSE = 247.90 mb for available points) and default TALYS 2.0 calculations (R<sup>2</sup> = 0.75, RMSE = 312.59 mb) on the same test set data points. SHAP analysis quantitatively identified the contributions of input features (incident neutron energy, target/product nuclide properties, Q-value), revealing that EN and target characteristics are dominant. Furthermore, SHAP elucidated synergistic feature interactions, offering data-driven insights into the physical mechanisms influencing cross sections. This research demonstrates a robust, accurate, and interpretable ML framework for (n,2n) cross-section prediction, showcasing its capacity to further refine predictions based directly on experimental data, complementing established methods like ENDF and TALYS.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165789"},"PeriodicalIF":1.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522085","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}
{"title":"Effects of linear energy transfer on thermoluminescence properties of Eu-doped CaF2 ceramics","authors":"Kai Okazaki , Masanori Koshimizu , Yusuke Koba , Takumi Kato , Daisuke Nakauchi , Noriaki Kawaguchi , Takayuki Yanagida","doi":"10.1016/j.nimb.2025.165785","DOIUrl":"10.1016/j.nimb.2025.165785","url":null,"abstract":"<div><div>Linear energy transfer (LET) effects on thermoluminescence (TL) properties of Eu:CaF<sub>2</sub> ceramics were evaluated. TL glow curves were measured after irradiations with ion beams (160-MeV H, 150-MeV/n He, or 135-MeV/n C). They showed two glow peaks at 350 and 400 K. The intensity decreased with increase of Eu concentrations and LET. In addition, the decrease in the TL intensity with LET was suppressed at high Eu concentration. These results were explained in terms of the competition between the trapping of electrons and holes, which contribute to the TL, and the quenching (recombination) of electron-hole pairs owing to excited states interaction.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"566 ","pages":"Article 165785"},"PeriodicalIF":1.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518319","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}