Quantum Beam Science最新文献

A Platform for Laser-Driven Ion Sources Generated with Nanosecond Laser Pulses in the Intensity Range of 1013–1015 W/cm2 用强度范围为 1013-1015 W/cm2 的纳秒激光脉冲产生激光驱动离子源的平台

IF 1.4

Quantum Beam Science Pub Date : 2024-01-10 DOI: 10.3390/qubs8010005

L. Giuffrida, V. Istokskaia, A. Picciotto, V. Kantarelou, M. Barozzi, R. Dell`Anna, M. Divoký, O. Denk, D. Giubertoni, F. Grepl, A. Hadjikyriacou, M. Hanus, J. Krása, M. Kucharik, T. Levato, P. Navratil, J. Pilar, F. Schillaci, S. Stanček, M. Tosca, M. Tryus, A. Velyhan, A. Lucianetti, T. Mocek, D. Margarone

{"title":"A Platform for Laser-Driven Ion Sources Generated with Nanosecond Laser Pulses in the Intensity Range of 1013–1015 W/cm2","authors":"L. Giuffrida, V. Istokskaia, A. Picciotto, V. Kantarelou, M. Barozzi, R. Dell`Anna, M. Divoký, O. Denk, D. Giubertoni, F. Grepl, A. Hadjikyriacou, M. Hanus, J. Krása, M. Kucharik, T. Levato, P. Navratil, J. Pilar, F. Schillaci, S. Stanček, M. Tosca, M. Tryus, A. Velyhan, A. Lucianetti, T. Mocek, D. Margarone","doi":"10.3390/qubs8010005","DOIUrl":"https://doi.org/10.3390/qubs8010005","url":null,"abstract":"An experimental platform for laser-driven ion (sub-MeV) acceleration and potential applications was commissioned at the HiLASE laser facility. The auxiliary beam of the Bivoj laser system operating at a GW level peak power (~10 J in 5–10 ns) and 1–10 Hz repetition rate enabled a stable production of high-current ion beams of multiple species (Al, Ti, Fe, Si, Cu, and Sn). The produced laser–plasma ion sources were fully characterized against the laser intensity on the target (1013–1015 W/cm2) by varying the laser energy, focal spot size, and pulse duration. The versatility and tuneability of such high-repetition-rate laser–plasma ion sources are of potential interest for user applications. Such a statistically accurate study was facilitated by the large amount of data acquired at the high repetition rate (1–10 Hz) provided by the Bivoj laser system.","PeriodicalId":31879,"journal":{"name":"Quantum Beam Science","volume":"53 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139441204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Double-Relief Silver Coins Minted in the Greek Colonies (444–390/340–280/270 BC) of Southern Italy Analysed by XRF 通过 XRF 分析意大利南部希腊殖民地（公元前 444-390/340-280/270 年）铸造的双倍兑换银币

IF 1.4

Quantum Beam Science Pub Date : 2023-12-25 DOI: 10.3390/qubs8010002

J. Brocchieri, R. Vitale, Carlo Sabbarese

引用次数: 0

Stress Measurement of Stainless Steel Piping Welds by Complementary Use of High-Energy Synchrotron X-rays and Neutrons 通过补充使用高能同步辐射 X 射线和中子测量不锈钢管道焊缝应力

IF 1.4

Quantum Beam Science Pub Date : 2023-12-22 DOI: 10.3390/qubs8010001

Yasufumi Miura, Kenji Suzuki, Satoshi Morooka, Takahisa Shobu

{"title":"Stress Measurement of Stainless Steel Piping Welds by Complementary Use of High-Energy Synchrotron X-rays and Neutrons","authors":"Yasufumi Miura, Kenji Suzuki, Satoshi Morooka, Takahisa Shobu","doi":"10.3390/qubs8010001","DOIUrl":"https://doi.org/10.3390/qubs8010001","url":null,"abstract":"Probabilistic fracture mechanics (PFM) is increasingly recognized as a viable approach for evaluating the structural integrity of nuclear components, such as piping, primarily affected by stress corrosion cracking (SCC). PFM analysis requires several input parameters, among which welding residual stress is critically important due to its significant influence on SCC initiation and propagation. Recently, a novel technique involving a double-exposure method (DEM) utilizing synchrotron X-rays was introduced as an effective means for measuring welding residual stress with high spatial resolution. In this paper, we applied DEM to assess the residual stress of a plate specimen, which was extracted from a welded pipe through electrical discharge machining. Consequently, detailed stress maps under a plane stress state were generated. Additionally, the residual stress distributions in the welded pipe under a triaxial stress state were evaluated using neutron diffraction. Based on these findings, we proposed a methodology to acquire detailed stress maps of welded pipes by combining high-energy synchrotron X-rays and neutron diffraction.","PeriodicalId":31879,"journal":{"name":"Quantum Beam Science","volume":"44 4","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139164409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cable Robots as Conventional Linear Stage Alternatives for the Investigation of Complex-Shaped Objects via Macroscopic X-ray Fluorescence Imaging 缆索机器人作为传统线性平台的替代品，通过宏观 X 射线荧光成像技术研究形状复杂的物体

IF 1.4

Quantum Beam Science Pub Date : 2023-11-21 DOI: 10.3390/qubs7040037

Matthias Alfeld, Philipp Tempel, V. van der Wijk

引用次数: 0

Chromium–Aluminum Coatings for Oxidation Protection of Titanium–Aluminum Intermetallic Alloys 用于钛铝金属间合金氧化保护的铬铝涂层

IF 1.4

Quantum Beam Science Pub Date : 2023-11-20 DOI: 10.3390/qubs7040036

Almaz Nazarov, Alexey Maslov, Elena A. Korznikova, Kamil Ramazanov

{"title":"Chromium–Aluminum Coatings for Oxidation Protection of Titanium–Aluminum Intermetallic Alloys","authors":"Almaz Nazarov, Alexey Maslov, Elena A. Korznikova, Kamil Ramazanov","doi":"10.3390/qubs7040036","DOIUrl":"https://doi.org/10.3390/qubs7040036","url":null,"abstract":"This article explores the utilization of cathodic-arc deposition Cr-Al overlay coatings as oxidation protection for Ti-Al-Nb intermetallic alloys. The primary objective is to investigate PVD Al-Cr coatings deposited via cathodic-arc deposition without subsequent vacuum annealing. The microstructure, phase, and chemical composition of the coatings were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction analysis. Isothermal exposure of samples in a laboratory air furnace was conducted, revealing the efficacy of Cr-Al coatings in protecting the Ti49-11Al-40Nb-1.5Zr-0.75V-0.75Mo-0.2Si (mass%) intermetallic alloy VTI-4 against oxidation. The findings highlight that the as-deposited coatings possess a layered structure and contain Al-Cr intermetallics. Post-exposure to the furnace without prior vacuum annealing results in coatings exhibiting a porous microstructure, raising concerns regarding oxidation protection. This investigation of Cr-Al coatings on a VTI-4 alloy substrate yields valuable insights into their nanolaminate structure and challenges associated with aluminum droplet fractions. The proposed additional vacuum heat treatment at 650 °C for 500 h effectively homogenizes the coating, leading to predominant Cr2Al and Ti-Al phases. Additionally, the formation of diffusion layers at the “coating–substrate” interface and the presence of oxide barriers contribute to the coatings’ heat resistance. Our research introduces possibilities for tailoring coating properties for specific high-temperature applications in aerospace, energy, or industrial contexts. Further refinement of the heat treatment process offers the potential for developing advanced coatings with enhanced performance characteristics.","PeriodicalId":31879,"journal":{"name":"Quantum Beam Science","volume":"16 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139257887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identifying the Spin-Incoherent Contribution to Quasielastic Neutron Scattering with a Cold Triple-Axis Spectrometer 用冷三轴光谱仪鉴定自旋非相干对准弹性中子散射的贡献

Quantum Beam Science Pub Date : 2023-11-13 DOI: 10.3390/qubs7040035

Andrew G. Manning, Shinichiro Yano, Sojeong Kim, Won Bo Lee, Soo-Hyung Choi, Nicolas R. de Souza

引用次数: 0

Measurement of Mechanical Behavior of 11B-Enriched MgB2 Wire Using a Pulsed Neutron Source 用脉冲中子源测量富11b MgB2金属丝的力学行为

Quantum Beam Science Pub Date : 2023-10-31 DOI: 10.3390/qubs7040034

Shutaro Machiya, Kozo Osamura, Yoshimitsu Hishinuma, Hiroyasu Taniguchi, Stefanus Harjo, Takuro Kawasaki

{"title":"Measurement of Mechanical Behavior of 11B-Enriched MgB2 Wire Using a Pulsed Neutron Source","authors":"Shutaro Machiya, Kozo Osamura, Yoshimitsu Hishinuma, Hiroyasu Taniguchi, Stefanus Harjo, Takuro Kawasaki","doi":"10.3390/qubs7040034","DOIUrl":"https://doi.org/10.3390/qubs7040034","url":null,"abstract":"MgB2 represents a hexagonal superconductive material renowned for its straightforward composition, which has facilitated the development of cost-effective practical wires. Its capacity to function at temperatures as low as liquid hydrogen (LH2) has made it a prominent candidate as wire material for the coils of next-generation fusion reactors. Much like other superconducting wires, a prevalent issue arises when these wires are employed in coils, wherein electromagnetic forces induce tensile stress and strain within the wire. This, in turn, diminishes the critical current, which is the maximum current capable of flowing within the generated magnetic field and strain. The techniques and methods for accurately measuring the actual strain on the filaments are of paramount importance. While strain measurements have been conducted with synchrotron radiation and neutrons for other practical wires in the past, no such measurements have been undertaken for MgB2. Presumably, this lack of measurement is attributed to its relatively greater thickness, making it less suitable for synchrotron radiation measurements. Additionally, the high absorption cross-section of the included boron-10 poses challenges in obtaining elastic scattering data for neutron measurements. In response, we fabricated a wire enriched with boron-11, an isotope with a smaller neutron absorption cross-section. We then embarked on the endeavor to measure its strain under tensile loading using pulsed neutrons. Consequently, we succeeded in obtaining changes in the lattice constant under tensile loading through Rietveld analysis. This marks the inaugural instance of strain measurement on an MgB2 filament, signifying a significant milestone in superconductivity research.","PeriodicalId":31879,"journal":{"name":"Quantum Beam Science","volume":"97 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135872626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Collective Acceleration of Helium Ions from Its Residual Atmosphere in a Luce Diode 卢斯二极管中残余大气中氦离子的集体加速度

Quantum Beam Science Pub Date : 2023-10-24 DOI: 10.3390/qubs7040033

Vladislav Ryzhkov, Mikhail Zhuravlev, Gennady Remnev

引用次数: 0

Stress Evaluation Method by Neutron Diffraction for HCP-Structured Magnesium Alloy hcp结构镁合金的中子衍射应力评价方法

Quantum Beam Science Pub Date : 2023-10-13 DOI: 10.3390/qubs7040032

Stefanus Harjo, Wu Gong, Takuro Kawasaki

引用次数: 0

Influence of Gate Depletion Layer Width on Radiation Resistance of Silicon Carbide Junction Field-Effect Transistors 栅极耗尽层宽度对碳化硅结场效应晶体管辐射电阻的影响

Quantum Beam Science Pub Date : 2023-10-11 DOI: 10.3390/qubs7040031

Akinori Takeyama, Takahiro Makino, Yasunori Tanaka, Shin-Ichiro Kuroki, Takeshi Ohshima

{"title":"Influence of Gate Depletion Layer Width on Radiation Resistance of Silicon Carbide Junction Field-Effect Transistors","authors":"Akinori Takeyama, Takahiro Makino, Yasunori Tanaka, Shin-Ichiro Kuroki, Takeshi Ohshima","doi":"10.3390/qubs7040031","DOIUrl":"https://doi.org/10.3390/qubs7040031","url":null,"abstract":"Silicon carbide junction field-effect transistors (SiC JFETs) are promising candidates as devices applicable to radiation conditions, such as the decommissioning of nuclear facilities or the space environment. We investigate the origin of the threshold volage (Vth) shift and hysteresis of differently structured SiC JFETs. A large positive Vth shift and hysteresis are observed for a depletion-type JFET with a larger depletion layer width. With changing the sweep range of the gate voltage and depletion width, the Vth shift was positively proportional to the difference between the channel depth and depletion width (channel depth–gate depletion width). By illuminating the sub-band gap light, the Vth of the irradiated depletion JFETs recovers close to nonirradiated ones, while a smaller shift and hysteresis are observed for the enhancement type with a narrower width. It can be interpreted that positive charges generated in a gate depletion layer cause a positive Vth shift. When they are swept out from the depletion layer and trapped in the channel, this gives rise to a further Vth shift and hysteresis in gamma-irradiated SiC JFETs.","PeriodicalId":31879,"journal":{"name":"Quantum Beam Science","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136211391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0