Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms最新文献_第4页

Influence of electronic excitations on damage kinetics in SiC 电子激发对SiC损伤动力学的影响

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 : 2025-08-13 DOI: 10.1016/j.nimb.2025.165835

A.B. Serban , N. Djourelov , L. Thomé , G. Gutierrez

{"title":"Influence of electronic excitations on damage kinetics in SiC","authors":"A.B. Serban , N. Djourelov , L. Thomé , G. Gutierrez","doi":"10.1016/j.nimb.2025.165835","DOIUrl":"10.1016/j.nimb.2025.165835","url":null,"abstract":"<div><div>Silicon carbide is a versatile material renowned for its thermal stability and radiation resistance, making it a strong candidate for use in nuclear power plants, radiation detectors, and photovoltaic devices. This study investigates the formation and recovery of irradiation-induced defects in 6H-SiC using single (S<sub>n</sub>) and dual (S<sub>n</sub>&S<sub>e</sub>, S<sub>n</sub> + S<sub>e</sub>) ion beam irradiation. Samples irradiated with 0.9-MeV I and 27-MeV Fe ions were used to independently and simultaneously probe nuclear (S<sub>n</sub>) and electronic (S<sub>e</sub>) energy loss effects. Damage kinetics were carried out by irradiating at different fluence levels. Defect evolution was characterized using variable energy slow positron Doppler Broadening Spectroscopy (DBS) and Rutherford backscattering spectrometry in channeling mode (RBS/C). The findings highlighted that double-beam irradiation can mitigate the amorphization effects typically observed under single-beam irradiation. It provided a deeper understanding of the SiC behavior under radiation, which is crucial for optimizing its performance and reliability in nuclear and photovoltaic applications.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"567 ","pages":"Article 165835"},"PeriodicalIF":1.4,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144831027","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

Neutronic simulation of the seventh irradiation experiment at the Swiss spallation neutron source 瑞士散裂中子源第七次辐照实验的中子模拟

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 : 2025-08-05 DOI: 10.1016/j.nimb.2025.165820

Wei Jiang , Wei Lu , Yong Dai

{"title":"Neutronic simulation of the seventh irradiation experiment at the Swiss spallation neutron source","authors":"Wei Jiang , Wei Lu , Yong Dai","doi":"10.1016/j.nimb.2025.165820","DOIUrl":"10.1016/j.nimb.2025.165820","url":null,"abstract":"<div><div>The SINQ Target Irradiation Program (STIP) is one of the important research projects performed at the Paul Scherrer Institute (PSI). The seventh experiment of the SINQ Target Irradiation Program (STIP-VII) was conducted with SINQ Target 10 from 2013 to 2014 and the total proton charge received by the target was 11.7 Ah. A radiation damage assessment was performed using MCNPX to predict the key radiation damage productions of displacement, helium and hydrogen for six materials, 9Cr-1Mo steel, Zry-2, Al, SiC, Ta and W, placed in different specimen rods. The incident proton source term for the assessment was produced with a gamma mapping measurement performed on the proton beam entrance window. The fluences of protons and neutrons as well as the energy deposition in the SINQ Target 10 were calculated. At an average proton beam current of 1.45 mA, the peak proton and neutron fluxes are 2.28 × 10<sup>14</sup>p/cm<sup>2</sup>/s and 5.60 × 10<sup>14</sup>n/cm<sup>2</sup>/s, respectively. The maximum irradiation dose and helium productions for steel specimens are 26.5 dpa and 2240 appm, respectively.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"567 ","pages":"Article 165820"},"PeriodicalIF":1.4,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771382","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 and calculation of leakage neutron spectra from beryllium sample using a white neutron field 用白中子场测量和计算铍样品的泄漏中子谱

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 : 2025-08-05 DOI: 10.1016/j.nimb.2025.165793

X. Zhang, R. Han, B. Liu, G. Tian, F. Shi, H. Sun, Z. Chen

引用次数: 0

Gamma-irradiation-induced surface traps in polymethyl methacrylate: Evolution and impact on insulation performance γ辐照诱导的聚甲基丙烯酸甲酯表面陷阱：演变和对绝缘性能的影响

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 : 2025-08-01 DOI: 10.1016/j.nimb.2025.165817

Yawei Zhou , Shi Yang , Yixiang Hu , Deyu He , Aixu Zhong , Jiahui Yin , Weixi Luo , Chunqing He

{"title":"Gamma-irradiation-induced surface traps in polymethyl methacrylate: Evolution and impact on insulation performance","authors":"Yawei Zhou , Shi Yang , Yixiang Hu , Deyu He , Aixu Zhong , Jiahui Yin , Weixi Luo , Chunqing He","doi":"10.1016/j.nimb.2025.165817","DOIUrl":"10.1016/j.nimb.2025.165817","url":null,"abstract":"<div><div>The evolution of gamma-irradiation-induced surface traps and their impact on the insulation properties of polymethyl methacrylate (PMMA) were investigated. Gamma irradiation was carried out at room temperature using a <sup>60</sup>Co source, with irradiation doses are 0.1, 1.0, 10, 100 kGy, respectively. The surface morphologies, free volume, trap distribution, and vacuum surface flashover properties of both pristine and gamma-irradiated samples were measured. Cracks and holes appeared on the surface of PMMA samples successively after gamma irradiation. Both cross-linking and degradation reactions occur simultaneously during the irradiation process. Gamma irradiation alters PMMA surface microstructure, directly affecting its vacuum insulation performance via trap formation. Appropriate gamma irradiation is an effective method to improve the vacuum surface insulation properties of PMMA. Positron annihilation lifetime spectroscopy is proposed as a new method to characterize the surface trap properties of dielectric materials.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"567 ","pages":"Article 165817"},"PeriodicalIF":1.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749379","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

Beam-pulsing study for a 100 MeV proton cyclotron 100兆电子伏质子回旋加速器的束脉冲研究

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 : 2025-08-01 DOI: 10.1016/j.nimb.2025.165805

Ji Luyu, An Shizhong, Huang Peng, Zheng Xia, Song Guofang, Xing Jiansheng, Ji Bin, Li Pengzhan, Bao Jie, Cao Lei, Liu Zhenwei, Wei Junyi, Ren Jie, Wang Jincheng, Liu Yingyi

{"title":"Beam-pulsing study for a 100 MeV proton cyclotron","authors":"Ji Luyu, An Shizhong, Huang Peng, Zheng Xia, Song Guofang, Xing Jiansheng, Ji Bin, Li Pengzhan, Bao Jie, Cao Lei, Liu Zhenwei, Wei Junyi, Ren Jie, Wang Jincheng, Liu Yingyi","doi":"10.1016/j.nimb.2025.165805","DOIUrl":"10.1016/j.nimb.2025.165805","url":null,"abstract":"<div><div>The compact cyclotron CYCIAE-100, developed by the China Institute of Atomic Energy (CIAE), can generate a continuous proton beam with an energy of 100 MeV. To meet the pulsed beam requirements for nuclear data measurements, a beam pulsing system was developed. A chopper was installed in the injection line to convert the continuous beam from the ion source into a pulsed beam with a frequency adjustable from the MHz range to lower frequencies. Two phase selectors were used to limit the beam’s phase width, and a dual extraction method was employed to reduce beam overlaps in the extraction region, thus achieving quasi-single-turn extraction. The design and fabrication of the chopper and phase selectors were completed, and experimental tests were conducted. The experimental results demonstrated that the pulse width was successfully compressed to less than 5 ns, ensuring sufficiently high energy resolution and providing the conditions for nuclear data measurement experiments.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"567 ","pages":"Article 165805"},"PeriodicalIF":1.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749378","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

New parametrisation for low energy fusion cross-sections 低能聚变截面的新参数化

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 : 2025-07-31 DOI: 10.1016/j.nimb.2025.165819

V.V. Gaganov

引用次数: 0

Measurement of radionuclide production probabilities in negative muon nuclear capture and validation of Monte Carlo simulation model 负介子核捕获中放射性核素产生概率的测量及蒙特卡罗模拟模型的验证

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 : 2025-07-30 DOI: 10.1016/j.nimb.2025.165801

Yuji Yamaguchi , Megumi Niikura , Rurie Mizuno , Motonobu Tampo , Masahide Harada , Naritoshi Kawamura , Izumi Umegaki , Soshi Takeshita , Katsuhiro Haga

{"title":"Measurement of radionuclide production probabilities in negative muon nuclear capture and validation of Monte Carlo simulation model","authors":"Yuji Yamaguchi , Megumi Niikura , Rurie Mizuno , Motonobu Tampo , Masahide Harada , Naritoshi Kawamura , Izumi Umegaki , Soshi Takeshita , Katsuhiro Haga","doi":"10.1016/j.nimb.2025.165801","DOIUrl":"10.1016/j.nimb.2025.165801","url":null,"abstract":"<div><div>As part of the development of a sample radioactivity calculation program, we have measured radionuclide production probabilities in negative muon nuclear capture to update experimental data and to validate a calculation dataset obtained by a Monte Carlo simulation code. The probabilities have been obtained by an activation experiment on <sup>27</sup>Al, <span><math><msup><mrow></mrow><mrow><mi>nat</mi></mrow></msup></math></span>Si, <sup>59</sup>Co, and <span><math><msup><mrow></mrow><mrow><mi>nat</mi></mrow></msup></math></span>Ta targets. The obtained probabilities expand the validation scope to the radionuclide production processes outside of the existing data coverage. By comparing the resultant probabilities with the calculated dataset, it has been revealed that the dataset is generally on the safe side in radioactivity estimation and needs to be corrected in the following three cases: (i) isomer production; (ii) radionuclide production by multiple neutron emission; (iii) radionuclide production by particle emissions involving a proton. The present probabilities and the new findings on the correction provide valuable clues to improvements of the simulation models.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"567 ","pages":"Article 165801"},"PeriodicalIF":1.4,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144723910","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

Boron induced x-ray production cross sections 硼诱导x射线产生的截面

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 : 2025-07-29 DOI: 10.1016/j.nimb.2025.165818

I. Gorlachev , I. Ivanov , P. Kharkin , A. Kireyev , M. Koloberdin , A. Platov , M. Zdorovets , N. Burtebayev

引用次数: 0

Tungsten peak broadening in LEIS: Origins and challenges for quantitative analysis LEIS中钨峰展宽：定量分析的起源与挑战

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 : 2025-07-29 DOI: 10.1016/j.nimb.2025.165823

N. Efimov , D. Sinelnikov , M. Grishaev , I. Nikitin , V. Luzanov

引用次数: 0

Reduction in graphene oxide thin film induced by plasma focus 等离子体聚焦诱导氧化石墨烯薄膜的还原

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 : 2025-07-28 DOI: 10.1016/j.nimb.2025.165821

Faranak Rahebi, Morteza Habibi

引用次数: 0