Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms最新文献_第7页

Geant4 simulation of electron beam penetration behavior in textile artifacts matrix

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2025-01-06 DOI: 10.1016/j.nimb.2024.165603

Sijia Li , Lingtong Yan , Heyang Sun , Xiangqian Feng , Li Li

{"title":"Geant4 simulation of electron beam penetration behavior in textile artifacts matrix","authors":"Sijia Li , Lingtong Yan , Heyang Sun , Xiangqian Feng , Li Li","doi":"10.1016/j.nimb.2024.165603","DOIUrl":"10.1016/j.nimb.2024.165603","url":null,"abstract":"<div><div>Textile relics are susceptible to microbial infestation, making sterilization imperative. Electron beam irradiation offers an eco-friendly solution. In practical operations, work distance of electron beam source, irradiation dose, and electron energy all influence sterilization efficacy and the integrity of artifact matrix. By utilizing Geant4 simulations, we studied the interaction between electron beams and the matrix of textiles (protein and cellulose) under different irradiation conditions. For low-energy electron beams, the irradiation distance in a nitrogen atmosphere significantly affects the energy deposition rate with a constant matrix thickness. When the energy is below 1 MeV, both the electron energy and the work distance notably influence the energy deposition rate of the beam. As the energy increases beyond 1 MeV, this influence becomes less significant. Additionally, the depth of 99% energy deposition is less than 1 mm for protein at electron energies below 0.4 MeV and for cellulose below 0.45 MeV.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"560 ","pages":"Article 165603"},"PeriodicalIF":1.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160338","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

Measurement of proton elastic scattering cross-section of Zr and deuterium distribution in thick ZrDx films 测量锆的质子弹性散射截面和厚 ZrDx 薄膜中的氘分布

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-22 DOI: 10.1016/j.nimb.2024.165576

Meng Wang , Wei Zhang , Bo Xin , Jie Gao , Liqun Shi , Hongliang Zhang

引用次数: 0

Comparison of fast-neutron-induced reaction cross-sections in 27Al, 197Au, 209Bi, 59Co, 19F, 23Na, and 89Y in quasi-monoenergetic fields of p+Li and d+TiT neutron sources 在 p+Li 和 d+TiT 中子源的准单能场中比较 27Al、197Au、209Bi、59Co、19F、23Na 和 89Y 的快速中子诱导反应截面

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-21 DOI: 10.1016/j.nimb.2024.165566

J. Jarošík , C. Bonaldi , C. Fontana , W. Geerts , M. Macías , S. Oberstedt , M. Štefánik , A. Tsinganis , V. Wagner

{"title":"Comparison of fast-neutron-induced reaction cross-sections in 27Al, 197Au, 209Bi, 59Co, 19F, 23Na, and 89Y in quasi-monoenergetic fields of p+Li and d+TiT neutron sources","authors":"J. Jarošík , C. Bonaldi , C. Fontana , W. Geerts , M. Macías , S. Oberstedt , M. Štefánik , A. Tsinganis , V. Wagner","doi":"10.1016/j.nimb.2024.165566","DOIUrl":"10.1016/j.nimb.2024.165566","url":null,"abstract":"<div><div>This paper describes cross-section measurements of fast-neutron-induced reactions using the neutron activation method. The study employed two accelerator-driven fast neutron sources, each possessing distinct characteristics during irradiation of analogous sets of samples. Specifically, the neutron source at the NPI Řež relied on the p+Li(C) reaction, while MONNET at JRC Geel utilized the d+TiT(Ag) reaction for neutron production. Building upon prior experiments conducted at NPI, we present new cross-sections for reactions, some of which suffer from a dearth of experimental data. The results presented in this paper originate from samples of Al, Au, Bi, Co, NaF, and Y that were irradiated with neutrons at energies of 17.6(3) MeV, and 18.5(4) MeV at MONNET, and an energy of 22.5(8) MeV at the NPI. Following neutron irradiation, the samples were analysed using gamma-ray spectrometry. Cross-sections of several fast-neutron-induced reactions were determined on the basis of the measurement of neutron spectra and corresponding reaction yields. By comparing the results of analogous experiments conducted in different experimental setups, it becomes possible to assess systematic uncertainties. The obtained cross-sections may contribute to the further development of both advanced nuclear reactors and to a more precise fast-neutron dosimetry.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"559 ","pages":"Article 165566"},"PeriodicalIF":1.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702353","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 chemical short-range order on displacement cascade in medium-entropy CrCoNi alloys 化学短程有序对中熵铬钴镍合金位移级联的影响

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-21 DOI: 10.1016/j.nimb.2024.165581

Yuzhou Liang, Chuanlong Xu, Xiaobao Tian, Qingyuan Wang, Wentao Jiang, Haidong Fan

{"title":"Effects of chemical short-range order on displacement cascade in medium-entropy CrCoNi alloys","authors":"Yuzhou Liang, Chuanlong Xu, Xiaobao Tian, Qingyuan Wang, Wentao Jiang, Haidong Fan","doi":"10.1016/j.nimb.2024.165581","DOIUrl":"10.1016/j.nimb.2024.165581","url":null,"abstract":"<div><div>Chemical short-range order (CSRO) is an important structure in high/medium entropy alloys (H/MEAs), which has a significant influence on the mechanical properties of irradiated materials. In this work, molecular dynamics (MD) simulations are performed to investigate the effects of CSRO on the point defect evolution during displacement cascade in medium-entropy CrCoNi alloys. To validate the influence of CSRO on point defects, multi-displacement cascades were initially conducted on the alloy. The results indicate that the CSRO structure can notably diminish dislocation and defect densities. Then, the influence of the CSRO structure on point defects under single displacement cascade was discussed. Both the peak number of point defects and the number of surviving point defects decrease with the increasing degree of CSRO during the single displacement cascade, indicating that the CSRO enhances the irradiation-resistance of irradiated materials. The Ni-rich region in CSRO can inhibit the formation of point defects due to its higher formation energy barrier. While the Co-Cr region in CSRO was found to promote the migration of point defects that can facilitate their recombination due to the lower migration energy. The current work provides new insights into understanding the evolution of irradiation-induced defects and mechanical properties of irradiated M/HEAs.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"559 ","pages":"Article 165581"},"PeriodicalIF":1.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701614","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

Activation cross sections of 7Li-induced reactions on natTi: Implications for monitor reactions 镍上 7Li- 引发反应的活化截面：对监测器反应的影响

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-19 DOI: 10.1016/j.nimb.2024.165579

Masayuki Aikawa , Saki Goto , Damdinsuren Gantumur , Dagvadorj Ichinkhorloo , Naoyuki Ukon , Naohiko Otuka , Sándor Takács , Hiromitsu Haba

引用次数: 0

Experimental study of single-electron detachment for Rh−, Ir− in collision with noble gases 与惰性气体碰撞时 Rh-、Ir- 的单电子脱离实验研究

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-18 DOI: 10.1016/j.nimb.2024.165580

Siming Wang , Yifei Yang , Rong Yang , Xuemei Zhang

引用次数: 0

Influence of cathode materials on BeO currents in cosmogenic 10Be measurements using a SNICS ion source and accelerator mass spectrometry 使用 SNICS 离子源和加速器质谱仪测量宇宙成因 10Be 时阴极材料对 BeO 电流的影响

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-17 DOI: 10.1016/j.nimb.2024.165562

Atsunori Nakamura , Takeyasu Yamagata , Hiroyuki Matsuzaki

{"title":"Influence of cathode materials on BeO currents in cosmogenic 10Be measurements using a SNICS ion source and accelerator mass spectrometry","authors":"Atsunori Nakamura , Takeyasu Yamagata , Hiroyuki Matsuzaki","doi":"10.1016/j.nimb.2024.165562","DOIUrl":"10.1016/j.nimb.2024.165562","url":null,"abstract":"<div><div>The precision of <sup>10</sup>Be measurements by accelerator mass spectrometry (AMS) relies on the intensity of BeO<sup>-</sup> currents from Cs-sputtered samples. We conducted an experiment to determine the effect of cathode materials on BeO<sup>-</sup> currents for AMS measurements. The peak currents of stainless-steel cathodes were slightly higher than those of Cu cathodes, indicating the benefits of using the former for measuring low-level samples. However, this slight difference may be counteracted by longer measurement times. The difference in the BeO<sup>-</sup> currents is attributed to competitive ionization between BeO and cathode materials. Fe, the primary element in stainless steel, has a significantly lower electron affinity compared to Cu, resulting in reduced electron consumption for BeO ionization. This phenomenon mirrors the effect of metal-matrix selection on BeO<sup>-</sup> current intensity. These results are relevant for optimizing beam currents of other nuclides in AMS measurements and are beneficial for studies conducted using SNICS ion sources.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"558 ","pages":"Article 165562"},"PeriodicalIF":1.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Studying of radiation attenuation and interaction parameters of some materials used in dental applications 研究牙科应用中一些材料的辐射衰减和相互作用参数

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-14 DOI: 10.1016/j.nimb.2024.165575

A.M. Abdelmonem , Samah K. Elshamndy , M.S. Ali

{"title":"Studying of radiation attenuation and interaction parameters of some materials used in dental applications","authors":"A.M. Abdelmonem , Samah K. Elshamndy , M.S. Ali","doi":"10.1016/j.nimb.2024.165575","DOIUrl":"10.1016/j.nimb.2024.165575","url":null,"abstract":"<div><div>Gamma-ray, neutron, electrons and ions interactions in seven composites were theoretical radiological studied. Alloy A, alloy B, alloy C, solder, zirconium, filler, and acrylic are investigated which used in dentistry and have densities between 1.104 and 15.522 g/cm<sup>3</sup>. Additionally, an experimental investigation for the last three composites against gamma-ray (<sup>137</sup>Cs and <sup>60</sup>Co) with NaI(Tl) detector, total gamma-ray and fast neutron using <sup>252</sup>Cf neutron source were measured using by stilbene detector. Phy-X/PSD, MRCS program, and the Monte Carlo-based MATLAB software for Neutron Attenuation Properties (MCCNAP) were also used to calculate the fast neutron removal cross-section (FNRCS) at 4.5 MeV. Alloys A, B, and C had the greatest FNRCS and MRC values, respectively, averaged at 0.187 and 0.222 cm<sup>−1</sup>. Phy-X/PSD and Py-MLBUF programs were used to evaluate gamma radiation interaction parameters across a wide energy range from 0.015 − 15 MeV. For all forms of radiation studied, Alloy A, Alloy B, and Alloy C have been found to be the best photon shield composites. SRIM Monte Carlo software computed the range of C<sup>4+</sup>, H<sup>+</sup>, He<sup>2+</sup> and Au<sup>3+</sup>, and ions across a wide energy range (0.01–20 MeV) of ions, and the ESTAR NIST program deduced the total stopping power (TSP) and continuous slowing down approximation (CSDA) range values for electron interactions across a wide energy range (0.01–1000 MeV) of electron. Both TPS and CSDA range data showed that Alloys A, B, and C were preferred over other samples, and the ranges of investigated ions increased with decreasing sample density but rose with projectile energies across all samples.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"558 ","pages":"Article 165575"},"PeriodicalIF":1.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661178","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 100 MeV proton irradiation on the performance of P3HT-based perovskite solar cells 100 MeV 质子辐照对基于 P3HT 的过氧化物太阳能电池性能的影响

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-14 DOI: 10.1016/j.nimb.2024.165565

Ning Liu , Limin Zhang , Bintao Xue , Ahsan Ejaz , Dingping Wang , Tongmin Zhang

{"title":"Effects of 100 MeV proton irradiation on the performance of P3HT-based perovskite solar cells","authors":"Ning Liu , Limin Zhang , Bintao Xue , Ahsan Ejaz , Dingping Wang , Tongmin Zhang","doi":"10.1016/j.nimb.2024.165565","DOIUrl":"10.1016/j.nimb.2024.165565","url":null,"abstract":"<div><div>Perovskite solar cells (PSCs) are promising for space applications. In this work, P3HT-based PSCs were irradiated at room temperature with 100 MeV protons to various fluences. The efficiencies of the PSCs were significantly increased by 30–35 % after irradiation with low fluences up to 1 × 10<sup>11</sup>p/cm<sup>2</sup>. Meanwhile, the illumination yields and charge carrier lifetime of the perovskite films were found to be improved after irradiation, which is attributed to the irradiation-induced healing of lattice defects in perovskites. When irradiated to a higher fluence of 1 × 10<sup>12</sup>p/cm<sup>2</sup>, the transmittance of the glass substrates was distinctly reduced due to the formation of color-center defects, which resulted in the performance degradation of the cells. Considering that P3HT-based PSCs have better thermal stability in outer space than the widely used spiro-OMeTAD-based PSCs, the reported results may have important implications for space applications of PSCs.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"558 ","pages":"Article 165565"},"PeriodicalIF":1.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661179","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

Pt/TiO2 nanoparticles synthesized via gamma irradiation to improve photocatalytic degradation of methyl orange in visible light 通过伽马辐照合成的 Pt/TiO2 纳米粒子可提高可见光下甲基橙的光催化降解能力

IF 1.4 3区物理与天体物理

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-13 DOI: 10.1016/j.nimb.2024.165560

Vo Thi Thu Nhu , Van-Thuc Nguyen

{"title":"Pt/TiO2 nanoparticles synthesized via gamma irradiation to improve photocatalytic degradation of methyl orange in visible light","authors":"Vo Thi Thu Nhu , Van-Thuc Nguyen","doi":"10.1016/j.nimb.2024.165560","DOIUrl":"10.1016/j.nimb.2024.165560","url":null,"abstract":"<div><div>This study prepared Pt modification on TiO<sub>2</sub> nanoparticles by radiolysis method using gamma-ray from the Co-60 source. Characteristic properties and morphology of Pt-modified TiO<sub>2</sub> NPs (Pt/TiO<sub>2</sub>) were determined through X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM)<em>,</em> energy-dispersive X-ray spectroscopy (EDX),high-resolution transmission electron microscopy(HRTEM) and band gap energy. The results indicated the existence of Pt<sup>o</sup> on the surface TiO<sub>2</sub>, and the band gap of Pt/TiO<sub>2</sub> catalysts was lower than pure TiO<sub>2</sub>. Photocatalytic degradation methyl orange (MO) 20 ppm of Pt/TiO<sub>2</sub> nanoparticles was investigated under visible light. The TiO<sub>2</sub>-doped 1 %wt Pt sample has the highest MO degradation efficiency; the MO degradation efficiency of the Pt<sub>1.0</sub>/TiO<sub>2</sub> sample was nearly twice that of using pure TiO<sub>2</sub> under visible irradiation for two hours. Besides, the factors of the amount of material used, solution pH and dye concentration, and reusability of Pt/TiO<sub>2</sub> nanoparticles were also investigated.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"558 ","pages":"Article 165560"},"PeriodicalIF":1.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661255","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