Nuclear Analysis最新文献

{"title":"Radiological impact of hydrocarbon waste release on drinking water of ughievwen and udu communities, delta state Nigeria","authors":"Oghenevovwero Emmanuel Esi","doi":"10.1016/j.nucana.2024.100121","DOIUrl":"10.1016/j.nucana.2024.100121","url":null,"abstract":"<div><p>Well water quality has been characterized with constant and continuous changes via the interaction of rock, soil and natural nano-filters which terminates at the aquiferous layer for clean well-water collection. The continuous exploration and production of crude oil has resulted significant increase of unwanted elements such as naturally occurring radionuclides in the water-bed which necessitates this study. The study determines the radionuclides based health impact or hazards associated with drinking water from crude oil exploration/production release in Ughievwen and Udu communities of Delta State, Nigeria. Sixty well water samples (three samples from each community) were collected and analyzed using sodium iodide (Nal (Tl)) detector. The obtained mean values of ²³⁸U, ²³²Th and ⁴⁰K are 6.91 <span><math><mrow><mo>±</mo></mrow></math></span> 1.62BqL⁻¹, 4.39 <span><math><mrow><mo>±</mo></mrow></math></span> 1.47 BqL⁻¹ and 24.54 <span><math><mrow><mo>±</mo></mrow></math></span> 1.59 BqL⁻¹ respectively. The ²³⁸U, ²³²Th and ⁴⁰K results showed that the measured values are higher than the world standard (UNSCEAR; WHO) and the control values The mean values of total annual effective dose of different age groups are: 11.08 mSvy⁻¹, 2.54 mSvy⁻¹, 1.93 mSvy⁻¹, 2.52 mSvy⁻¹, 7.03 mSvy⁻¹ and 1.12 mSvy⁻¹ respectively. While the mean committed effective dose of adult is 55.94 mSvy⁻¹. The total annual effective dose, committed effective dose, cancer risks and hereditary effects are all lower than recommended limit (WHO; ICRP; USEPA) and reported scientific values except 11.08 mSvy⁻¹ and 7.03 mSvy⁻¹ that are higher than limit. It is evident from obtained results that the drinking water may not be radiologically safe for use by the public, which necessitates routine monitoring and caution to circumvent increase in radiation and the radiological of the studied communities’ drinking water. This is to avoid long term radiological risk arising from accumulation of such release in the studied communities.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 3","pages":"Article 100121"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000211/pdfft?md5=869ab386a09f2b2eca91c3c05f0eb686&pid=1-s2.0-S2773183924000211-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141850667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature distribution in the PGAA system: Collimator, shutter, and filter in TRIGA Mark II reactor","authors":"Jamila Yousfi ,&nbsp;Abdessamad Didi ,&nbsp;Hamane Lemziouka ,&nbsp;Lamiae Mrharrab ,&nbsp;Hamid Amsil ,&nbsp;Otman Jai ,&nbsp;Hamid Bounouira ,&nbsp;Khalid Larakil","doi":"10.1016/j.nucana.2024.100120","DOIUrl":"https://doi.org/10.1016/j.nucana.2024.100120","url":null,"abstract":"<div><p>This article examines the impact of temperature on the steel collimator cap and the primary beam shutter. These components will be used to implement the Prompt Gamma Activation Analysis (PGAA) technique in the Moroccan TRIGA Mark-II research reactor. The steel collimator plug is essential for forming the neutron beam, while the main role of the shutter is to stop the beam when the channel is inactive. This study analyzes the effect of temperature on the collimator and shutter system, particularly focusing on the variation in maximum temperature over a month of operation with 8-h cycles per day, the behavior of temperature over 24 h, the total heat flux as a function of the length of the experimental device, the temperature distribution in mild steel (E235) and 304L stainless steel materials, and the total displacement and strain gradient as a function of temperature. All calculations were performed using COMSOL Multiphysics simulation software, based on the finite element method.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 3","pages":"Article 100120"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277318392400020X/pdfft?md5=ed234df0ea998ce112ebc55e0b3b6931&pid=1-s2.0-S277318392400020X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141607678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural insights into soft matter materials via spin echo small angle neutron scattering and small angle neutron scattering","authors":"Tingting Wang","doi":"10.1016/j.nucana.2024.100128","DOIUrl":"10.1016/j.nucana.2024.100128","url":null,"abstract":"<div><p>The recent advancements in neutron scattering technologies in China, with the development of China's first Spin-Echo Small-Angle Neutron Scattering (SESANS) spectrometer at China Mianyang Research Reactor (CMRR) and the integration of a Very Small Angle Neutron Scattering (VSANS) instrument at China Spallation Neutron Source (CSNS), have significantly bolstered the nation's scientific capabilities. This review aims to highlight the distinctive features and applications of SESANS and SANS, and to offer a valuable contribution by demonstrating how SESANS and SANS can be leveraged for the study of soft matters and solid-state materials, with a particular emphasis on the benefits of techniques such as chain labeling, contrast variation, and contrast matching. We also aim to illustrate what types of information can be gleaned from these methods. The review is structured to first introduce the general concepts of SANS and SESANS, followed by a discussion on the information these techniques can provide. Then the applications of these techniques, in combination with other techniques, on various material investigations will be demonstrated. The review concludes with a summary and future perspectives, aiming to inspire further interdisciplinary research and collaboration, and beneficial to a broader audience.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 3","pages":"Article 100128"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000284/pdfft?md5=35c8e99ee7a1b6e9645a922724fdd3ac&pid=1-s2.0-S2773183924000284-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Potassium-40 and Uranium-238 activities and radiological risk in Missour, Morocco soils using gamma spectrometry","authors":"Abdessamad Didi ,&nbsp;Hamid Bounouira ,&nbsp;Abir Adnane ,&nbsp;Soumaia El Khamsi Chahd ,&nbsp;Hamid Amsil ,&nbsp;Abdelwahab Badague ,&nbsp;Iliasse Aarab","doi":"10.1016/j.nucana.2024.100125","DOIUrl":"10.1016/j.nucana.2024.100125","url":null,"abstract":"<div><p>The objective of this study is to assess natural activity in soil to estimate potential radiological risks for the population. Given that soil is inherently radioactive and can reach hazardous levels, it is crucial to determine the activities of radionuclides such as Potassium-40 and Uranium-238 descendants at different depths and geographical positions. For this work, gamma spectrometry method was employed to analyze soil samples collected at three different positions in the Missour region. Each position was sampled at five different depths, spaced 5 cm apart, resulting in a total of 15 samples. The activity of Potassium-40 and Uranium238 descendants in the soil was accurately assessed using Lvis software, enabling the estimation of radiological doses.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 3","pages":"Article 100125"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000259/pdfft?md5=b064fa8f6785305a19ec020d1f7ebcfe&pid=1-s2.0-S2773183924000259-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141964342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the impact of anode material on X-ray photon fluence and characteristics: A Monte Carlo simulation study","authors":"Hassan Ouhadda ,&nbsp;Mustapha Zerfaoui ,&nbsp;Karim Bahhous ,&nbsp;Yassine Oulhouq ,&nbsp;Abdessamad Didi ,&nbsp;Abdeslem Rrhioua ,&nbsp;Dikra Bakari","doi":"10.1016/j.nucana.2024.100112","DOIUrl":"10.1016/j.nucana.2024.100112","url":null,"abstract":"<div><p>This study investigates the critical significance of anode material selection in defining the energy spectrum and properties of X-ray photons in medical physics applications. Using the GATE platform and Monte Carlo simulations, a direct relationship between anode material atomic number and photon fluence is demonstrated. As the atomic number increases from Z = 29 (Copper) to Z = 74 (Tungsten), photon fluence rises by 62 %, indicating a substantial impact on X-ray production. Furthermore, the X-ray spectrum is affected by this material-driven changes, revealing a noticeable shift towards higher energy values: the mean energy of the continuous spectrum rises from 46.97 keV for Copper to 49.0 keV for Tungsten. The thermal properties of the material affect the temperature increase at the focal point. Rhodium and Molybdenum have a higher temperature rise than Copper (Cu) and Tungsten (W), because Cu and W have a greater thermal diffusion compared to other materials. These findings underscore the significance of anode material choice in optimizing X-ray systems which may enhance diagnostic accuracy and efficiency in diverse applications.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 2","pages":"Article 100112"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000120/pdfft?md5=9a7db82a57fbdb3212adfe5d2e27cfe0&pid=1-s2.0-S2773183924000120-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141139792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature feedback reactivity analysis for LEU-Fuelled SLOWPOKE-2 research reactor using DRAGON5 and DONJON5 codes","authors":"Otman Jaï ,&nbsp;Otmane El Hajjaji ,&nbsp;Abdessamad Didi","doi":"10.1016/j.nucana.2024.100111","DOIUrl":"https://doi.org/10.1016/j.nucana.2024.100111","url":null,"abstract":"<div><p>The purpose of this study is to provide a new deterministic model for the SLOWPOKE-2 nuclear research reactor at École Polytechnique de Montréal (EPM) with LEU (Low Enriched Uranium) core. Using the latest release of the code system DRAGON5 and DONJON5 and the cross-section data library ENDFB.VII rel.1 evaluation, the developed model is applied to simulate the neutronic behavior of the SLOWPOKE-2 research reactor. We studied the separate temperature effects of the main components of the core (<em>i.e.</em>, fuel, coolant/moderator, beryllium reflector, and water reflector). The contribution of different physical phenomena to the RTC was assessed. The temperature reactivity feedback calculated using the deterministic approach based on the DRAGON5 and DONJON5 code system using the ENDF/B-VII.1 evaluated nuclear data library produced in the WIMD-D4 format is in good agreement. Therefore, this work proves the capability of DRAGON5 and DONJON5 codes, normally used for power reactors, to reliably simulate a low-power research reactor.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 2","pages":"Article 100111"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000119/pdfft?md5=05c346ab9ad1faff66d878337e3fcf74&pid=1-s2.0-S2773183924000119-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140843260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strategic analysis for advancing Morocco's nuclear infrastructure using PESTELE framework","authors":"Hafsa Housni ,&nbsp;Naila Amrous ,&nbsp;Najima Daoudi ,&nbsp;Mohamed Jaouad Malzi","doi":"10.1016/j.nucana.2024.100110","DOIUrl":"https://doi.org/10.1016/j.nucana.2024.100110","url":null,"abstract":"<div><p>Morocco's exploration of nuclear energy aligns with both climate goals and national energy ambitions, offering a promising low-carbon alternative to conventional fossil fuels. Despite the nation's significant strides in renewable energy, nuclear power remains understudied, revealing a critical literature gap. This research underscores the global imperative to transition to net-zero emissions and the pivotal role nuclear energy plays in addressing climate change. Within the context of Morocco's 2030 plan, which prioritizes renewable energy, nuclear energy stands as an underexplored aspect, lacking comprehensive research. To bridge this gap, the study employs a PESTLE analysis to examine the political, economic, societal, technological, legal, and environmental factors influencing Morocco's nuclear energy landscape. The integration of insights from various sources, including press releases, reports, and scientific publications, ensures a holistic and well-informed perspective on Morocco's nuclear industry. The paper concludes by providing an overview of nuclear energy use on different scales, accompanied by a detailed discussion of the PESTLE analysis outcomes. This approach seeks to contribute valuable insights for informed decision-making and strategic planning in the realm of nuclear energy development.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 2","pages":"Article 100110"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000107/pdfft?md5=e7583478359212119327a9ec9efb8d08&pid=1-s2.0-S2773183924000107-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140549704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulating the impact of electron beam energy deposition on lead target temperature","authors":"Walid Oueslati","doi":"10.1016/j.nucana.2024.100113","DOIUrl":"https://doi.org/10.1016/j.nucana.2024.100113","url":null,"abstract":"<div><p>This study delves into the thermal dynamics induced by an electron beam sourced from the CIRCE III accelerator, focusing on a lead target previously employed at the National Centre for Nuclear Science and Technology (CNSTN) in Tunisia for neutron and photon production. Leveraging FLUKA software, we simulate the intricate interplay between electrons and the target surface, analyzing variations in deposited energy across different target thicknesses. Beyond elucidating the electron-target interaction, our investigation extends to predicting crucial parameters such as the maximum operational threshold and surface temperature distribution of the target. To achieve this, a computational model harnessing the finite volume method is employed, offering insights into the thermal response dynamics and paving the way for optimized operational protocols and target design refinements. Through this comprehensive analysis, we aim to advance the understanding of thermal phenomena in electron-target interactions, thereby bolstering the efficiency and safety of particle accelerator operations in diverse scientific applications.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 2","pages":"Article 100113"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000132/pdfft?md5=649bffd1aa4b7288312b8b309793fef4&pid=1-s2.0-S2773183924000132-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141324561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption of molybdenum (VI) from wastewater using a metal-organic framework material","authors":"Rui Zhang,&nbsp;Wanjun Mu","doi":"10.1016/j.nucana.2024.100101","DOIUrl":"https://doi.org/10.1016/j.nucana.2024.100101","url":null,"abstract":"<div><p>With the aim of removing ⁹⁹Mo from radioactive wastewater, a metal-organic framework Zr-MOF and its functionalized derivatives (Zr-MOF-SO₄ and Zr-MOF-C₂O₄) were prepared as adsorbents, and characterized by SEM, XPS and FI-IR. The results showed the –SO₄ and –C₂O₄ groups were successfully loaded onto the surface of the original Zr-MOF; the obtained Zr-MOF-SO₄ and Zr-MOF-C₂O₄ presented different morphologies as small pellets. Both exhibit high adsorption efficiency and fast adsorption rates due to their abundant –SO₄ and –C₂O₄ surface groups, that provide many adsorption sites for Mo(VI). The maximum adsorption capacities for Mo(VI) of Zr-MOF-SO₄ and Zr-MOF-C₂O₄ are 192.5 mg g⁻¹ and 432.3 mg g⁻¹, respectively, which is an improvement over other similar adsorbents. In addition, thermodynamic studies indicate a spontaneous exothermic mechanism for the adsorption process. These results demonstrate that anchoring of the functionalized groups is a good way to improve Mo(VI) adsorption capacity of MOF materials.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 1","pages":"Article 100101"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000016/pdfft?md5=ccfb26a41c43f064abecba73fcde615c&pid=1-s2.0-S2773183924000016-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140137673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The blackening of organotin catalyzed silicone adhesive via low dose rate gamma irradiation","authors":"Bo Liu,&nbsp;Lei Yu,&nbsp;Yinyong Ao,&nbsp;Pucheng Wang,&nbsp;Wei Huang","doi":"10.1016/j.nucana.2023.100100","DOIUrl":"https://doi.org/10.1016/j.nucana.2023.100100","url":null,"abstract":"<div><p>Low dose rate gamma irradiation blackening effect of organotin catalyzed silicone adhesive is presented. When the total dose accumulated to 350 kGy at low dose rate (0.03 Gy/s), there is a significant blackening of the color changing from transparent to black by the increasing of dose, which is simultaneously deepened by the decreasing of dose rate. That is, low dose rate and accumulated dose both affect the final color of silicone adhesive. The structure changes of silicone adhesive before and after blackening are characterized by UV–vis, FTIR, and SPME-GC-MS, and the mechanism of blackening is deduced to be related to the content of SnO.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 1","pages":"Article 100100"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277318392300054X/pdfft?md5=a91b7a751e02d4951c028cc10fffd522&pid=1-s2.0-S277318392300054X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139100082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}