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

Radiation shielding properties of tungsten alloy multileaf collimator materials in linear accelerator

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 : 2025-04-24 DOI: 10.1016/j.nimb.2025.165709

K. Srinivasan

引用次数: 0

Probing the synergistic impacts of different lead halides in MoO3-Borobismuthate glass systems for improved radiation-blocking and rigidity features

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 : 2025-04-23 DOI: 10.1016/j.nimb.2025.165708

Hassan Hanafy , K. Chandra Sekhar , Reda Elsaman , K.A. Aly , Nissamudeen , M. Alhabradi , G. Nagaraju , Mohd Shakir Khan , Yasser B. Saddeek

{"title":"Probing the synergistic impacts of different lead halides in MoO3-Borobismuthate glass systems for improved radiation-blocking and rigidity features","authors":"Hassan Hanafy , K. Chandra Sekhar , Reda Elsaman , K.A. Aly , Nissamudeen , M. Alhabradi , G. Nagaraju , Mohd Shakir Khan , Yasser B. Saddeek","doi":"10.1016/j.nimb.2025.165708","DOIUrl":"10.1016/j.nimb.2025.165708","url":null,"abstract":"<div><div>The work explores the effect of three lead halides, PbX<sub>2</sub> (X = F, Cl, Br), on the radiation-shielding and mechanical properties of Bi<sub>2</sub>O<sub>3</sub>-MoO<sub>3</sub>-B<sub>2</sub>O<sub>3</sub> glasses. These high-density glasses may be potential candidates for radiation-based technologies. The analysis of the results shows that in the photon energy ranges of 0.015–15 MeV, the PbBr<sub>2</sub>-rich samples with 20 mol% present high shielding parameters such as linear attenuation coefficient (LAC = 468 cm<sup>−1</sup>), mass attenuation coefficient (MAC = 95.6 cm<sup>2</sup>/g) at 0.015 MeV, effective atomic number (Z<sub>eff</sub> = 88.5), and electron density (N<sub>eff</sub> = 8.96 electron/cm<sup>3</sup>) at 0.1 MeV. Furthermore, the increase in the concentrations of PbX<sub>2</sub>, particularly in the glass containing 20 mol% of PbBr<sub>2</sub>, presents a good correlation between density and enhanced cross-link density. This relationship reflects an increment in the calculated elastic moduli through two theoretical models, indicating improved mechanical properties by incorporating various concentrations of PbX<sub>2</sub> with adjustments based on halide type.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165708"},"PeriodicalIF":1.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863827","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 Li molecular removal method for minimizing interference in radiocarbon (14C) measurements using laser technology

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 : 2025-04-22 DOI: 10.1016/j.nimb.2025.165714

Junghun Park , Wan Hong , G. Park , Kilho Sung

{"title":"Development of a Li molecular removal method for minimizing interference in radiocarbon (14C) measurements using laser technology","authors":"Junghun Park , Wan Hong , G. Park , Kilho Sung","doi":"10.1016/j.nimb.2025.165714","DOIUrl":"10.1016/j.nimb.2025.165714","url":null,"abstract":"<div><div>Mass interference of Li molecular ions (Li<sub>2</sub>) in accelerator mass spectrometry (AMS), which uses an even number of positive ion in the high-energy part, sometimes presents challenges in accurate radioactive carbon (<sup>14</sup>C) measurements. The presence of these molecular ions, which share the same mass-to-charge ratio as <sup>14</sup>C, leads to errors that undermine the reliability of AMS measurements. In this work, we propose and validate a new laser-based method for selectively removing Li<sub>2</sub> ions. A fiber-optic laser with 1.166 eV photon energy, which is an energy higher than the binding energy of Li<sub>2</sub> anion electrons while at such low energy that it does not affect the electrons of <sup>14</sup>C anion, effectively separates only the electrons of Li<sub>2</sub> anion. The method reduced the Li<sub>2</sub> signal by 94.3 %, maintaining the integrity of the <sup>14</sup>C measurement. Our findings indicate that laser technology can significantly improve the AMS sensitivity and reliability for <sup>14</sup>C analysis, which can be a useful tool for various scientific applications.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165714"},"PeriodicalIF":1.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860151","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

Ion irradiation and finite element analysis to assess the effect of swelling on Cr-coated cladding

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 : 2025-04-19 DOI: 10.1016/j.nimb.2025.165702

Artur Santos Paixao, Rijul Chauhan, Zhihan Hu, Frank A. Garner, Michael Nastasi, Lin Shao

{"title":"Ion irradiation and finite element analysis to assess the effect of swelling on Cr-coated cladding","authors":"Artur Santos Paixao, Rijul Chauhan, Zhihan Hu, Frank A. Garner, Michael Nastasi, Lin Shao","doi":"10.1016/j.nimb.2025.165702","DOIUrl":"10.1016/j.nimb.2025.165702","url":null,"abstract":"<div><div>By combining ion irradiation and finite element analysis, the effect of irradiation-induced swelling on the structural integrity of nuclear reactor components can be assessed. In this study, ion irradiation is used to obtain the void swelling as a function of damage level in pure chromium (Cr). Cr swells easily and exhibits almost no incubation period for swelling. The experimentally obtained swelling curve is then used as input for finite element analysis to evaluate the interfacial stress buildup in Cr-coated zircaloy tubes at reactor operation temperatures. As one accident-tolerant fuel design currently under evaluation by the nuclear industry, Cr coating can improve the oxidation resistance of zircaloy fuel cladding under abnormal conditions. However, the likelihood of debonding of the Cr coating from Zircaloy tubes needs to be evaluated. The stress evolution, after considering the contributions from thermal expansion, differential void swelling, and creep relaxation, is modeled as a function of time. The study shows that the highest probability of debonding occurs when the fuel cladding cools down when the reactor is shut down for refueling. The methodology presented in this study can be applied to other coating systems to evaluate their tolerance to radiation and accident scenarios.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165702"},"PeriodicalIF":1.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850623","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

Self-ion irradiation of ZrC up to 300 displacements per atom

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 : 2025-04-18 DOI: 10.1016/j.nimb.2025.165695

SeungSu Kim , Miguel Pena , Yongchang Li , Zhihan Hu , Bai Cui , Michael Nastasi , Lin Shao

{"title":"Self-ion irradiation of ZrC up to 300 displacements per atom","authors":"SeungSu Kim , Miguel Pena , Yongchang Li , Zhihan Hu , Bai Cui , Michael Nastasi , Lin Shao","doi":"10.1016/j.nimb.2025.165695","DOIUrl":"10.1016/j.nimb.2025.165695","url":null,"abstract":"<div><div>ZrC is a candidate fuel matrix for high-temperature gas-cooled reactors and a potential first wall materials for fusion reactors, owing to its high melting point, low neutron capture cross-section, and good mechanical properties. The radiation tolerance of ZrC is critical in such applications. Due to the excessive intrinsic vacancy concentration that naturally occurs in ZrC, it is expected that ZrC has excellent defect recombination efficiencies. In this study, ZrC is manufactured using plasma sintering techniques. Self-ion irradiation by 5 MeV carbon ions is carried out at room temperature, 300 °C, and 600 °C, with ion fluences up to 300 displacements per atom (dpa). Transmission electron microscopy characterization shows that ZrC does not exhibit amorphization under any of these irradiation conditions. No phase changes are observed. Raman spectra display well-separated acoustic and optical bands in the wavenumber region below 800 cm<sup>−1</sup>. These bands show gradual broadening with increasing damage levels. For wavenumbers higher than 800 cm<sup>−1</sup>, D and G modes, absent in the virgin sample, appear after irradiation. The increasing D/G mode intensity with rising damage levels suggests localized graphitization. Overall, the study demonstrates the excellent amorphization tolerance of ZrC under extreme conditions.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165695"},"PeriodicalIF":1.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848075","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

Combining ion beam heating, ion irradiation, and infrared imaging enables in situ characterization of radiation damage-dependent thermal properties

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 : 2025-04-17 DOI: 10.1016/j.nimb.2025.165701

Rijul R. Chauhan, Jack Gauderman, Kenneth Cooper, Frank A. Garner, Michael Nastasi, Lin Shao

{"title":"Combining ion beam heating, ion irradiation, and infrared imaging enables in situ characterization of radiation damage-dependent thermal properties","authors":"Rijul R. Chauhan, Jack Gauderman, Kenneth Cooper, Frank A. Garner, Michael Nastasi, Lin Shao","doi":"10.1016/j.nimb.2025.165701","DOIUrl":"10.1016/j.nimb.2025.165701","url":null,"abstract":"<div><div>This study investigates a novel method for in situ characterization of thermal properties of solids during ion irradiation experiments. In this method, a focused proton beam creates a localized hot spot, and upon deactivation, an infrared (IR) camera captures the subsequent lateral heat dissipation patterns. When analyzed in conjunction with finite element analysis, the material’s thermal properties can be extracted. By alternating between ion irradiation (using a large beam spot) and focused beam heating (using a small, collimated beam spot), it is feasible to obtain thermal property changes as a function of radiation damage in a single specimen. In this study, 2 MeV proton irradiation/beam heating, IR imaging, and finite element analysis were utilized to examine thermal diffusivity in single-crystal quartz across a range of temperatures and radiation doses. Notably, the results revealed that thermal diffusivity initially increases before decreasing as a function of radiation damage at room temperature.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165701"},"PeriodicalIF":1.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143837831","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

Finite element analysis of the impact of beam heating mode in molten salt corrosion experiments employing simultaneous ion irradiation

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 : 2025-04-16 DOI: 10.1016/j.nimb.2025.165694

Rijul R. Chauhan , Trevor Parker , Kenneth Cooper , Anthony Cecchini , Kyle Williams , Laura Hawkins , Michael Nastasi , Frank A. Garner , Lin Shao

{"title":"Finite element analysis of the impact of beam heating mode in molten salt corrosion experiments employing simultaneous ion irradiation","authors":"Rijul R. Chauhan , Trevor Parker , Kenneth Cooper , Anthony Cecchini , Kyle Williams , Laura Hawkins , Michael Nastasi , Frank A. Garner , Lin Shao","doi":"10.1016/j.nimb.2025.165694","DOIUrl":"10.1016/j.nimb.2025.165694","url":null,"abstract":"<div><div>Finite element analysis was used to investigate the temperature and stress profiles that develop in 316L stainless steel membranes being irradiated using different proton beam conditions in contact with a molten salt environment. It was shown that in addition to a nonuniform irradiation profile, a focused 2 MeV proton beam leads to very strong temperature and stress gradients in the membrane, introducing highly localized driving forces that complicate and even compromise the integrity and reliability of the experimental results of corrosion studies. The use of a focused beam in corrosion studies can create experimental artifacts that may misrepresent the true corrosion behavior.. In contrast, the use of a rastered beam is shown to distribute the protons and resulting radiation damage uniformly across the membrane face, and more importantly, results in temperature and stress profiles that are not only very uniform but are of much lower magnitude. The use of a rastered beam during molten salt corrosion experiments is therefore recommended to achieve uniform damage rates, thereby reducing both gradients and magnitudes of the temperature and stress distributions.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165694"},"PeriodicalIF":1.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143837830","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 influence of Fe substrate crystallographic orientation on the film formation of Cu clusters

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 : 2025-04-15 DOI: 10.1016/j.nimb.2025.165691

Yiwen He , Shengyuan Li , Gongping Li , Bojun Ruan , Hanbo Zhang , Shixu Zhang

{"title":"The influence of Fe substrate crystallographic orientation on the film formation of Cu clusters","authors":"Yiwen He , Shengyuan Li , Gongping Li , Bojun Ruan , Hanbo Zhang , Shixu Zhang","doi":"10.1016/j.nimb.2025.165691","DOIUrl":"10.1016/j.nimb.2025.165691","url":null,"abstract":"<div><div>In this study, molecular dynamics simulations were conducted to investigate the continuous deposition of Cu<sub>13</sub> clusters on Fe(001), Fe(011), and Fe(111) substrates, analyzing the effects of substrate crystallographic orientation on film formation. The results demonstrate that the crystallographic orientation of the Fe substrate has a significant impact on the film properties, including morphology, layer coverage, interfacial mixing, epitaxial quality, and internal stress. Furthermore, the influence of crystallographic orientation on the film evolves with increasing incident energy. At lower incident energies, films on the Fe(001) substrate exhibit the lowest surface roughness, while at higher incident energies, films on the Fe(011) substrate are the smoothest. Across the entire range of incident energies, films grown on the Fe(001) substrate have the highest epitaxial quality and layer coverage, whereas those on the Fe(011) substrate show the lowest interfacial mixing.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165691"},"PeriodicalIF":1.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833358","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

Study of TID & dose rate effect of gamma radiation on COTS CMOS camera 研究伽马辐射对 COTS CMOS 相机的 TID 和剂量率影响

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 : 2025-04-14 DOI: 10.1016/j.nimb.2025.165700

Manish Kumar Tiwari , Jyoti Diwan , S.K. Singh , C.A. Betty

{"title":"Study of TID & dose rate effect of gamma radiation on COTS CMOS camera","authors":"Manish Kumar Tiwari , Jyoti Diwan , S.K. Singh , C.A. Betty","doi":"10.1016/j.nimb.2025.165700","DOIUrl":"10.1016/j.nimb.2025.165700","url":null,"abstract":"<div><div>Commercially available CMOS cameras suffer from gamma radiation-induced total ionizing dose (TID) effect and transient effect in nuclear surveillance applications where radiation dose is very high. TID effects are those observable effects that do not disappear soon after the removal of the radiation source, whereas transient effects appear after the incident of gamma photons and the camera returns to a normal state soon. In this paper, we have presented gamma irradiation results of CMOS APS cameras using a Co-60 source. We have investigated the TID effect on the transient response of CMOS cameras due to gamma radiation. We have irradiated a camera at three different dose rates with a TID of 37 krad and another camera at 10 krad/hr for 40 krad TID. We have used image analysis techniques to find the TID effect and the transient effect. First, we have presented the TID effect due to gamma irradiation. Subsequently, we have presented the dose rate effect of gamma radiation and discussed the TID effect on the dose rate dependent transient response of the cameras. We have observed an increase in dark signal, dark signal non-uniformity and temporal noise as the TID effect and the snow effect as a transient effect. We have not found an observable effect on the transient response of the camera due to TID. The analysis techniques and results presented in this paper are useful in applications where cameras are used as radiation monitors, in surveillance and remote inspection applications.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825469","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

Long indirectly heated cathode ion source with multi-slit electrodes for material modification process

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 : 2025-04-13 DOI: 10.1016/j.nimb.2025.165705

Hiroaki Kai , Yoshiro Igarashi , Daiki Takashima , Takeshi Matsumoto , Nariaki Hamamoto , Sami K. Hahto , George Sacco

引用次数: 0