Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms最新文献_第8页

Comparative Monte Carlo simulation study of helium-induced DNA damage versus proton 氦诱导 DNA 损伤与质子诱导 DNA 损伤的蒙特卡罗模拟比较研究

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 : 2024-10-02 DOI: 10.1016/j.nimb.2024.165538

Renjun Jin, Jie Ma, Hao Shen, Zhaohong Mi

{"title":"Comparative Monte Carlo simulation study of helium-induced DNA damage versus proton","authors":"Renjun Jin, Jie Ma, Hao Shen, Zhaohong Mi","doi":"10.1016/j.nimb.2024.165538","DOIUrl":"10.1016/j.nimb.2024.165538","url":null,"abstract":"<div><div>Helium ions are thought to be effective for radiotherapy, and characterization of physical quantities related to cellular effects of helium ions are important in order to develop and improve treatment planning systems for helium ions. In this study, Geant4-DNA was used to obtain the physical energy deposit and OH reaction sites to feed the density-based spatial clustering of applications with noise (DBSCAN) and obtain the quantities related with DNA strand breaks. The results are compared to other calculations and show that with proper choice of variables, DBSCAN could be used to calculate the DNA damage. The helium DSB (double strand break) yields with chemical processes increased from 11.48 <span><math><mrow><msup><mrow><mo>(</mo><mi>G</mi><mi>y</mi><mi>G</mi><mi>b</mi><mi>p</mi><mo>)</mo></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></math></span> with the LET of 56.3 keV/μm to 49.32 <span><math><mrow><msup><mrow><mo>(</mo><mi>G</mi><mi>y</mi><mi>G</mi><mi>b</mi><mi>p</mi><mo>)</mo></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></math></span> at 219.2 keV/μm. The helium SSB (single strand break) yields with chemical processes decreased from 255.36 <span><math><mrow><msup><mrow><mo>(</mo><mi>G</mi><mi>y</mi><mi>G</mi><mi>b</mi><mi>p</mi><mo>)</mo></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></math></span> with the LET of 56.3 keV/μm to 161.28 <span><math><mrow><msup><mrow><mo>(</mo><mi>G</mi><mi>y</mi><mi>G</mi><mi>b</mi><mi>p</mi><mo>)</mo></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></math></span> at 219.2 keV/μm. SSB and DSB counts induced by helium particles incident on the lung adenocarcinoma cell nucleus increased by about 90 % and 200 % compared with those without chemical processes.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165538"},"PeriodicalIF":1.4,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142425226","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

Comparison of in-vacuum micro-PIXE and in-air micro-PIXE for unfixed plant sample 对未固定的植物样本进行真空中微 PIXE 和空气中微 PIXE 的比较

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 : 2024-09-28 DOI: 10.1016/j.nimb.2024.165536

Misako Miwa , Ayumi Nakatsuma , Shigeo Matsuyama , Sho Toyama , Takeshi Uchiyama , Yasuhiro Ishimaru , Nobuyuki Uozumi

{"title":"Comparison of in-vacuum micro-PIXE and in-air micro-PIXE for unfixed plant sample","authors":"Misako Miwa , Ayumi Nakatsuma , Shigeo Matsuyama , Sho Toyama , Takeshi Uchiyama , Yasuhiro Ishimaru , Nobuyuki Uozumi","doi":"10.1016/j.nimb.2024.165536","DOIUrl":"10.1016/j.nimb.2024.165536","url":null,"abstract":"<div><div>PIXE analysis is very useful for the simultaneous determination of various elements. Typically, when micro-PIXE analysis of biological samples with high water content is performed in a vacuum, freeze-drying methods are used to fix the structure and remove any ice crystals present in a controlled manner to prevent changes or redistribution of elemental content in the sample. This method is essential for cell size analysis. However, we considered that fixation is not always necessary for macroscopic analysis of plant tissue size. Therefore, we investigated the extent to which elemental density changes with vacuum extraction from elemental density ratios obtained from micro-PIXE analysis of <em>Arabidopsis thaliana</em> leaves in-air and in-vacuum. The deformation caused by beam irradiation and the quantitative changes of C, O, and H in the samples were also evaluated by STIM and RBS analyses of <em>Arabidopsis thaliana</em> petal.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165536"},"PeriodicalIF":1.4,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357942","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

In-situ measurement of radiation driven back-conversion from para to ortho liquid hydrogen state in cold moderators at J-PARC 在 J-PARC 冷缓和剂中现场测量辐射驱动的对位液氢向正液氢的反向转换

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 : 2024-09-26 DOI: 10.1016/j.nimb.2024.165534

M. Teshigawara , Y. Lee , H. Tatsumoto , M. Hartl , T. Aso , E.B. Iverson , G. Ariyoshi , Y. Ikeda , T. Hasegawa

{"title":"In-situ measurement of radiation driven back-conversion from para to ortho liquid hydrogen state in cold moderators at J-PARC","authors":"M. Teshigawara , Y. Lee , H. Tatsumoto , M. Hartl , T. Aso , E.B. Iverson , G. Ariyoshi , Y. Ikeda , T. Hasegawa","doi":"10.1016/j.nimb.2024.165534","DOIUrl":"10.1016/j.nimb.2024.165534","url":null,"abstract":"<div><div>At Japanese Spallation Neutron Source in J-PARC, the para-hydrogen fraction was measured by using Raman spectroscopy in-situ for an integrated beam power of 9.4 MW h at 1MW operation, to evaluate the functionality of the ferric oxyhydroxide catalyst. This result showed that full functionality of the catalyst was retained up to the 1 MW operation. We attempted to study the effect of neutron scattering driven para to ortho-hydrogen back-conversion rate in the absence of the catalyst effect with a bypass line without catalyst. The measured increase of ortho-hydrogen fraction was 0.44% for an integrated beam power of 2.4 MW h at 500 kW operation, which was attributed not only to neutron collisions in cold moderators but also to the high ortho-hydrogen fraction of initially static liquid hydrogen in the bypass line and passive exudation of quasi-static hydrogen in the catalyst vessel to the main loop.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165534"},"PeriodicalIF":1.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323169","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

Local state of charge measurement on a Li battery by X -ray photon counting computed tomography 利用 X 射线光子计数计算机断层扫描测量锂电池的局部电荷状态

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 : 2024-09-26 DOI: 10.1016/j.nimb.2024.165537

Hiroshi Sakurai , Kazushi Hoshi , Daiki Watabe , Kosuke Suzuki , Yuki Hasebe , Shunta Suzuki , Yumiko Ohno , Masami Torikoshi

引用次数: 0

Development of a forward Monte Carlo based weight-window generator using the history-counter function in PHITS 利用 PHITS 的历史计数器功能开发基于前向蒙特卡罗的权重窗口生成器

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 : 2024-09-26 DOI: 10.1016/j.nimb.2024.165535

Tatsuhiko Sato , Shintaro Hashimoto , José Ignacio Márquez Damián , Koji Niita

{"title":"Development of a forward Monte Carlo based weight-window generator using the history-counter function in PHITS","authors":"Tatsuhiko Sato , Shintaro Hashimoto , José Ignacio Márquez Damián , Koji Niita","doi":"10.1016/j.nimb.2024.165535","DOIUrl":"10.1016/j.nimb.2024.165535","url":null,"abstract":"<div><div>Appropriate use of the variance reduction techniques such as weight-windows are indispensable for effectively designing the radiation shielding based on the Monte Carlo simulation. In this study, we developed a new algorithm of weight-window generator (WWG) relying solely on forward Monte Carlo simulation and implemented it into the Particle and Heavy Ion Transport code System (PHITS). Our new algorithm leverages a PHITS-specific function called the “history counter”, which serves as an event logger that can be arbitrarily defined by users. The performance of the new WWG was investigated by conducting benchmark simulations for both idealized and practical shielding calculations. The results of the benchmark simulations suggested that our new algorithm can reduce the computational time by up to an order of magnitude. With this new feature, PHITS has become further suitable for the shielding calculations against high-energy radiations even when their evaluated cross-section data are unavailable.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165535"},"PeriodicalIF":1.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323353","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

The use of second foil stripping in tandem accelerators 串联加速器中第二箔片剥离的使用

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 : 2024-09-25 DOI: 10.1016/j.nimb.2024.165532

T.L. Bailey, L.K. Callahan, A.M. Clark, A.D. Nelson, L. Wood, P. Collon

{"title":"The use of second foil stripping in tandem accelerators","authors":"T.L. Bailey, L.K. Callahan, A.M. Clark, A.D. Nelson, L. Wood, P. Collon","doi":"10.1016/j.nimb.2024.165532","DOIUrl":"10.1016/j.nimb.2024.165532","url":null,"abstract":"<div><div>The 10 MV FN Tandem at the University of Notre Dame’s Nuclear Science Laboratory has the option for a second foil stripper halfway down its high energy column. With its utilization, users are able to produce beams with higher energies and/or transmission than single foil stripping alone would be capable of achieving. A discussion of the Schiwietz–Grande, Nikolaev–Dmitriev, and Baudinet-Robinet semi-empirical models used to determine the resulting charge state abundances, as well as how they compare to measured charge state distributions is presented. The advantages of a second foil stripper are discussed alongside measurements of the charge state abundances produced. The potential for more interfering beam species of similar magnetic rigidity is also discussed. It was found that for most of the beams tested, second foil stripping allowed higher energies with higher yields than the single terminal foil stripping alone could achieve which can enhance the capabilities of other laboratories using similar accelerator systems.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165532"},"PeriodicalIF":1.4,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319445","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

The effect of ion implantation and annealing temperatures on the migration behavior of ruthenium in glassy carbon 离子注入和退火温度对玻璃碳中钌迁移行为的影响

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 : 2024-09-18 DOI: 10.1016/j.nimb.2024.165533

T.A.O. Jafer , O.S. Odutemowo , H.A.A. Abdelbagi , T.T. Thabethe , J.B. Malherbe

{"title":"The effect of ion implantation and annealing temperatures on the migration behavior of ruthenium in glassy carbon","authors":"T.A.O. Jafer , O.S. Odutemowo , H.A.A. Abdelbagi , T.T. Thabethe , J.B. Malherbe","doi":"10.1016/j.nimb.2024.165533","DOIUrl":"10.1016/j.nimb.2024.165533","url":null,"abstract":"<div><p>Nuclear waste storage materials are inevitable in nuclear industry for preventing the release of radioactive waste products. Glassy carbon has been considered being beneficial to be used in the dry cask needed for nuclear waste storage. Thus, we studied the migration of ruthenium implanted in glassy carbon upon annealing. Our investigations show that ruthenium implantation caused defects in the glassy carbon structure, with more defects observed in the room temperature as-implanted samples compared to those implanted at 200 °C. Annealing the as-implanted samples from 500 to 800 °C showed no significant change in the ruthenium depth profiles, indicating the non-diffusivity of ruthenium in glassy carbon at these temperatures. However, annealing at higher temperatures (from 900 and 1300 °C) resulted in an increase in the maximum depth profile peaks, accompanied by a shift towards the surface, and a decrease in the full-width at half-maximum. These changes indicate the aggregation of ruthenium atoms in the near-surface region. Additionally, more ruthenium aggregation was observed in room temperature implanted samples compared to those implanted at 200 °C. This difference is attributed to the higher concentration of defects in room temperature implanted samples, which promotes ruthenium aggregation. Moreover, the migration and aggregation of ruthenium in the near-surface region contributed to an increase in the surface roughness of the glassy carbon.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165533"},"PeriodicalIF":1.4,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168583X24003033/pdfft?md5=1ad7044e69c10d103f8a6adca369df21&pid=1-s2.0-S0168583X24003033-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241776","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

On the interactions between alloying element niobium and interstitial/vacancy in Zr-Nb alloy: A first-principles study 关于 Zr-Nb 合金中合金元素铌与间隙/空位之间的相互作用：第一原理研究

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 : 2024-09-16 DOI: 10.1016/j.nimb.2024.165531

Tun Chen , Zhipeng Sun , Qing Hou , Jiechao Cui , Min Li , Jun Wang , Baoqin Fu

{"title":"On the interactions between alloying element niobium and interstitial/vacancy in Zr-Nb alloy: A first-principles study","authors":"Tun Chen , Zhipeng Sun , Qing Hou , Jiechao Cui , Min Li , Jun Wang , Baoqin Fu","doi":"10.1016/j.nimb.2024.165531","DOIUrl":"10.1016/j.nimb.2024.165531","url":null,"abstract":"<div><p>Zirconium-niobium alloy is widely used in pressurized-water-reactors (PWRs) due to its excellent performance. Herein, the effects of Nb on the formation, migration, and clustering of vacancies/interstitials in Zr-Nb solid solution are studied using first-principles calculations. Nb lowers the formation energy of Zr interstitials and significantly enhances the anisotropy of Zr interstitial migration in the vicinity. Nb shows thermodynamic attraction to vacancies while causes a significant decrease in the vacancy migration barrier, which enhances the mobility of vacancies around Nb. In addition, we find that the vacancy-mediated Nb migration is anisotropic, and these Nb-vacancy interactions play an important role in revealing the mechanism of the precipitation of needle-like Nb phases under high irradiation fluences. Finally, we verified the anisotropic attraction of Nb to vacancies with CI-NEB method. These findings will contribute to a more in-depth comprehension on the mechanism how Nb influences the evolution process of irradiation defects in Zr-Nb alloys.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165531"},"PeriodicalIF":1.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241861","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

Diagnostic study on laser-produced metal hydride plasmas 激光产生的金属氢化物等离子体诊断研究

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 : 2024-09-14 DOI: 10.1016/j.nimb.2024.165530

Xiang Wan , Pingping Gan , Huanyu Zhao , Junjie Zhang

引用次数: 0

Measurement of the 10B(d,α0)8Be, 10B(d,α1)8Be*, 10B(d,p2)9Be*, 11B(d,α0)9Be, and 11B(d,α2)9Be* reactions cross-sections at the deuteron energies up to 2.2 MeV 测量氘核能量高达 2.2 MeV 时的 10B(d,α0)8Be、10B(d,α1)8Be*、10B(d,p2)9Be*、11B(d,α0)9Be 和 11B(d,α2)9Be* 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 : 2024-09-13 DOI: 10.1016/j.nimb.2024.165527

Sergey Taskaev , Victor Bessmeltsev , Marina Bikchurina , Timofey Bykov , Dmitrii Kasatov , Iaroslav Kolesnikov , Alexey Nikolaev , Efim Oks , Georgii Ostreinov , Sergey Savinov , Anna Shuklina , Evgeniia Sokolova , Georgy Yushkov

{"title":"Measurement of the 10B(d,α0)8Be, 10B(d,α1)8Be*, 10B(d,p2)9Be*, 11B(d,α0)9Be, and 11B(d,α2)9Be* reactions cross-sections at the deuteron energies up to 2.2 MeV","authors":"Sergey Taskaev , Victor Bessmeltsev , Marina Bikchurina , Timofey Bykov , Dmitrii Kasatov , Iaroslav Kolesnikov , Alexey Nikolaev , Efim Oks , Georgii Ostreinov , Sergey Savinov , Anna Shuklina , Evgeniia Sokolova , Georgy Yushkov","doi":"10.1016/j.nimb.2024.165527","DOIUrl":"10.1016/j.nimb.2024.165527","url":null,"abstract":"<div><p>The deuteron-boron fusion reaction produces many different charged particles. Data on the reactions cross-sections differ among different authors, so obtaining experimental data is still relevant. Measurements of the reactions cross-section were carried out at the accelerator-based neutron source VITA at Budker Institute of Nuclear Physics (Novosibirsk, Russia) using an α-spectrometer. The <sup>10</sup>B(d,α<sub>0</sub>)<sup>8</sup>Be, <sup>10</sup>B(d,α<sub>1</sub>)<sup>8</sup>Be*, <sup>10</sup>B(d,p<sub>2</sub>)<sup>9</sup>Be*, <sup>11</sup>B(d,α<sub>0</sub>)<sup>9</sup>Be, and <sup>11</sup>B(d,α<sub>2</sub>)<sup>9</sup>Be* reactions cross-sections at the deuteron energies up to 2.2 MeV have been measured. The obtained data are presented in tabular form.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165527"},"PeriodicalIF":1.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142172338","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