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

{"title":"Differential cross–section measurements for 3He-induced reactions and elastic scattering on 12C","authors":"F. Maragkos ,&nbsp;V. Foteinou ,&nbsp;H.-W. Becker ,&nbsp;M. Kokkoris ,&nbsp;M. Mayer ,&nbsp;G. Provatas ,&nbsp;D. Rogalla","doi":"10.1016/j.nimb.2024.165517","DOIUrl":"10.1016/j.nimb.2024.165517","url":null,"abstract":"<div><p>In the present work, the differential cross sections of the ¹²C(³He,p_0-2)¹⁴N and ¹²C(³He,α₀)¹¹C nuclear reactions, as well as, the ¹²C(³He,³He₀)¹²C elastic scattering were determined at 5 detection angles (θ = 120°, 140°, 150°, 160°, 170°) covering the E_lab = 2000–6000 keV energy range, with a 25 to 100 keV energy step. Benchmarking measurements were also performed using two different thick glassy carbon targets to validate the cross-section values obtained for the reactions. All measurements were carried out at the 4 MV Tandem Dynamitron Accelerator facility of the Central Unit for Ion Beams and Radionuclides of the Ruhr University Bochum in Bochum, Germany. The experimental, data analysis and benchmarking procedures are presented in detail.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165517"},"PeriodicalIF":1.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142129124","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}

{"title":"Nanostructuring by ion beams – Preface","authors":"","doi":"10.1016/j.nimb.2024.165487","DOIUrl":"10.1016/j.nimb.2024.165487","url":null,"abstract":"","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165487"},"PeriodicalIF":1.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142122226","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}

{"title":"Characterization of mineral composition using PIXE and EXAFS analyses to elucidate the Barium adsorption mechanism","authors":"Kaori Oguri ,&nbsp;Naoto Hagura ,&nbsp;Akiko Yamaguchi ,&nbsp;Masahiko Okumura ,&nbsp;Haruaki Matsuura ,&nbsp;Yasumichi Tsunashima ,&nbsp;Katsumi Aoki ,&nbsp;Yoichi Arai ,&nbsp;Sou Watanabe","doi":"10.1016/j.nimb.2024.165516","DOIUrl":"10.1016/j.nimb.2024.165516","url":null,"abstract":"<div><p>Ningyo-toge is a uranium (U) mine that was operative in Japan. Currently, the mining area retains a dump of mill tailings. Groundwater is contaminated with U ore, and mill tailings might contain radioactive elements, such as U and radium (Ra), which can negatively impact the human body. This study determined the soil composition at the tailings dumping site using particle-induced X-ray emission, scanning electron microscopy, and X-ray diffraction and observed the adsorption structure of barium (Ba), an analog of Ra, using X-ray absorption fine structure analysis. The results revealed the existence of silicate minerals, such as quartz and mica, and metal oxides, such as Fe and Mn, in the soil. Ningyo-toge soil is similar to montmorillonite and bentonite. In particular, it was proposed that the adsorption of Ba on Mn oxide is an inner-sphere complex that immobilizes Ba. These findings will provide valuable information for estimating the behavior of Ra in the environment. The results of this study will be helpful for safety assessment and evaluating the impacts on the surrounding environment.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165516"},"PeriodicalIF":1.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097072","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}

{"title":"Baseline measurements in the assessment of ESS-specific radionuclide uptake by crops cultivated in Southern Sweden","authors":"R.J.W. Frost ,&nbsp;E. Hermansson ,&nbsp;G. Nagy ,&nbsp;G. Pédehontaa-Hiaa ,&nbsp;P. Pongrac ,&nbsp;C.L. Rääf ,&nbsp;C. Bernhardsson","doi":"10.1016/j.nimb.2024.165514","DOIUrl":"10.1016/j.nimb.2024.165514","url":null,"abstract":"<div><p>The European Spallation Source, ESS, is a neutron research facility under construction in Lund, Southern Sweden. The Facility will produce neutrons by spallation, using a powerful linear accelerator to deliver protons to a tungsten target. In addition to the desired neutron production, a long list of radionuclides will be created as by-products of the nuclear reaction inside the target. The Swedish Radiation Safety Authority has established a list of the most relevant radionuclides, in terms of contribution to the effective dose to ESS workers and the general public, should an accidental release of irradiated target material occur. This list includes radionuclides that are not produced by the nuclear energy industry, in particular ^178mHf, ¹⁸²Ta, ¹⁸⁷W, ¹⁴⁸Gd and ¹⁷³Lu. Ongoing research efforts aim to determine the best analytical methods to assess these exotic and often difficult-to-measure radionuclides in environmental samples. This work investigates the potential of X-ray fluorescence and time-of-flight elastic Recoil detection analysis for the assessment of soil samples, and the potential of particle induced X-ray emission for the assessment of crop samples. These techniques require only simple sample preparation steps and no chemical extraction, unlike the conventional environmental monitoring methods such as inductively-coupled plasma mass spectrometry, and show promise as complimentary methods enabling fast sample throughput. This study focuses on the analysis of uncontaminated soil and crops, to provide baseline data, whilst simultaneously assessing the available measurement capabilities. For the X-ray fluorescence system used in this study, the method detection limit for W in soil was determined to be 0.147<!--> <!-->ppth, and Zr which can be correlated with the migration of Hf was clearly measurable.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165514"},"PeriodicalIF":1.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168583X24002842/pdfft?md5=76d06d7e326dab0daeafeeba89a7368d&pid=1-s2.0-S0168583X24002842-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097073","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}

{"title":"Innovative nano-shielding for minimizing stray radiation dose in external radiation therapy: A promising approach to enhance patient safety","authors":"Saeed Rajabpour ,&nbsp;Ghada Almisned ,&nbsp;H.O. Tekin ,&nbsp;Asghar Mesbahi","doi":"10.1016/j.nimb.2024.165513","DOIUrl":"10.1016/j.nimb.2024.165513","url":null,"abstract":"<div><p>This study investigates the effectiveness of novel nanocomposite shielding materials in reducing out-of-field radiation doses during radiation therapy, employing Geant4 Monte Carlo (MC) simulations alongside an anthropomorphic female phantom. The research focuses on two radiation modalities: 6 MV beams with and without flattening filters. Utilizing the Geant4 MC code, detailed simulations of a Varian Clinac 2100C/D linear accelerator and an ICRP-145 mesh-type human phantom were conducted to estimate the doses to out-of-field organs from unintended secondary radiation. This involved simulating a comprehensive linac model, including all relevant beam-line components, and assessing the shielding effects of three different nanocomposites doped with metal nanoparticles at various thicknesses. The nanocomposites, comprising Polytetrafluoroethylene (PTFE), with PtO₂, IrO₂, and Bi₂O₃ nanoparticles, were evaluated for their potential to reduce patient organ doses from stray photon doses. The results showed that these materials could significantly lower radiation exposure to non-target tissues.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165513"},"PeriodicalIF":1.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097071","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}

{"title":"Geant4 simulations for the γ-ray detectors of gSPEC at GSI/FAIR","authors":"V. Piau ,&nbsp;R. Lozeva ,&nbsp;H. Ramarijaona ,&nbsp;I. Kojouharov ,&nbsp;G. Duchêne ,&nbsp;J. Gerl ,&nbsp;M. Górska ,&nbsp;A. Blot ,&nbsp;E. Guérard ,&nbsp;M. Filliger ,&nbsp;P. Herrmann ,&nbsp;P. Rosier ,&nbsp;M.-H. Sigward","doi":"10.1016/j.nimb.2024.165505","DOIUrl":"10.1016/j.nimb.2024.165505","url":null,"abstract":"<div><p>A design study for the <span><math><mi>γ</mi></math></span>-ray detector array of the gSPEC project, which aims at measuring nuclear moments at GSI/FAIR, is presented. Foreseen setups, involving DEGAS and the new gDEGAS triple cluster detectors for <span><math><mi>γ</mi></math></span>-ray spectroscopy are simulated using the Geant4 framework. The main characteristics associated to these detector assemblies with the envisaged configurations, namely the photo-peak efficiency and the angular resolution, are discussed. A new correction procedure for a better reconstruction of the time-perturbed angular distribution is proposed.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165505"},"PeriodicalIF":1.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142096278","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}

{"title":"Using X-ray absorption near edge structure to evaluate adsorption properties of rare earths and nitrogen by difference of their interactions","authors":"Kazuki Minowa ,&nbsp;Sou Watanabe ,&nbsp;Masahiko Nakase ,&nbsp;Youko Takahatake ,&nbsp;Yasunori Miyazaki ,&nbsp;Yasutoshi Ban ,&nbsp;Haruaki Matsuura","doi":"10.1016/j.nimb.2024.165496","DOIUrl":"10.1016/j.nimb.2024.165496","url":null,"abstract":"<div><p>In this study, X-ray absorption near edge structure (XANES) spectral analysis and column experiments were used to verify the selectivity of rare earth (RE) ions by alkyl diamide amine (ADAAM) adsorbent. In addition, the interactions between the N atoms of ADAAM and RE ions were evaluated to determine whether any of the RE ions are a valid simulant for developing a mutual separation process for minor actinides (MAs) in highly radioactive liquid waste. It was confirmed that La and Ce interacted with the amine N atom of ADAAM and they showed a peak shift of the N-K edge XANES spectrum; this finding suggested that a soft interaction is an essential factor influencing ion selectivity. Therefore, the selection factor of RE ions by ADAAM adsorbent was similar to that of MAs. It was concluded that RE ions are reasonable species to simulate MAs.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165496"},"PeriodicalIF":1.4,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0168583X24002660/pdfft?md5=8654c2cc488e7065ce759b504c75b2e4&pid=1-s2.0-S0168583X24002660-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142089740","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}

{"title":"Multiply-charged argon ion irradiation of microfabricated niobium wires","authors":"Bernardo Langa Jr. ,&nbsp;Ivan Lainez ,&nbsp;Margaret Marte ,&nbsp;Patrick Johnson ,&nbsp;Neil Mehta ,&nbsp;Dhruva Kulkarni ,&nbsp;Mohan Ghimire ,&nbsp;Dale Hensley ,&nbsp;Bernadeta Srijanto ,&nbsp;Chad Sosolik ,&nbsp;Kasra Sardashti","doi":"10.1016/j.nimb.2024.165511","DOIUrl":"10.1016/j.nimb.2024.165511","url":null,"abstract":"<div><p>While rare on Earth, multiply-charged ions (MCIs) are abundant species in outer space. For spacecraft outside the Earth’s atmosphere, MCIs are some of the main contributors to the failure of electronic devices. While the detrimental effects of MCIs on space electronics have been known for quite some time, the underlying physics of their interactions, which are tied to the coupling of both electronic and lattice degrees of freedom, are complex and remain relatively unexplored. The impacts of MCIs on superconducting electronics used for detection and communication in outer space are particularly unknown. Here, we aim to shed light on such interactions by examining the effect of low- to medium-dose Ar⁸⁺ irradiation on the physical characteristics (e.g., surface topography, electrical transport) of microfabricated niobium (Nb) wires.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165511"},"PeriodicalIF":1.4,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142077235","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}

{"title":"Multiple scattering of 855 MeV electrons in amorphous and crystalline silicon: Simulations versus experiment","authors":"Germán Rojas-Lorenzo ,&nbsp;Jesús Rubayo-Soneira ,&nbsp;Maykel Márquez-Mijares ,&nbsp;Andrei V. Korol ,&nbsp;Andrey V. Solov’yov","doi":"10.1016/j.nimb.2024.165515","DOIUrl":"10.1016/j.nimb.2024.165515","url":null,"abstract":"<div><p>The angular distribution function of multiple scattering experienced by <span><math><mrow><mn>855</mn><mspace></mspace><mtext>MeV</mtext></mrow></math></span> electrons passing through an amorphous silicon plate and an oriented silicon crystal has been studied by means of relativistic molecular dynamics simulations using two types of the potentials that describe electron–atom interaction. The differences in the angular distributions of the beam particles in both media are analyzed. The results obtained are compared to the experimental data and to the results of Monte Carlo simulations.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165515"},"PeriodicalIF":1.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142077234","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}

{"title":"Design and commissioning of the ISOL beamline at the RAON facility","authors":"T. Hashimoto ,&nbsp;H.J. Yim ,&nbsp;J.H. Kim ,&nbsp;Y.-H. Park ,&nbsp;S. Heo ,&nbsp;K.H. Yoo ,&nbsp;C.C. Yun ,&nbsp;H. Ishiyama ,&nbsp;J.H. Lee","doi":"10.1016/j.nimb.2024.165504","DOIUrl":"10.1016/j.nimb.2024.165504","url":null,"abstract":"<div><p>The Rare isotope Accelerator complex for ON-line experiment (RAON) located at the Daejeon site of the Institute for Basic Science (IBS) is the first Radioactive Isotope (RI) beam facility in Korea. The RAON facility employs an in-flight method using RI beams produced using an Isotope Separator On-Line (ISOL) method to explore unstable nuclei in uncharted regions. A high-power ISOL facility is critical for providing the required high-quality, intense RI beams. The design, construction, and installation of the ISOL system have been completed, and the beam transport line commissioning with stable isotope beams has been conducted. As a result, all requirements, such as the transmission and the mass-resolving power, for the beamlines were satisfied, and the beams from the Target Ion Source (TIS) were transported to the end of the ISOL beamline, which is the entrance to the superconducting linear accelerator system. The ISOL beamline is now ready for the transport of RI beams.</p></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"556 ","pages":"Article 165504"},"PeriodicalIF":1.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040228","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}