Nuclear Analysis最新文献

Assessment of metal contamination in sediment of Kerala Coast, India using EDXRF technique and Multivariate Statistical method

Nuclear Analysis Pub Date : 2024-12-21 DOI: 10.1016/j.nucana.2024.100151

T. Kiruba , P. Jayaprakash , J. Juliet Josephine Joy , J. Venkatamuthukumar , M. Suresh Gandhi , R. Ravisankar

{"title":"Assessment of metal contamination in sediment of Kerala Coast, India using EDXRF technique and Multivariate Statistical method","authors":"T. Kiruba , P. Jayaprakash , J. Juliet Josephine Joy , J. Venkatamuthukumar , M. Suresh Gandhi , R. Ravisankar","doi":"10.1016/j.nucana.2024.100151","DOIUrl":"10.1016/j.nucana.2024.100151","url":null,"abstract":"<div><div>The current study focused on the distribution of heavy metals in sediments from coastline of Kerala, India using Energy Dispersive X-ray Fluorescence (EDXRF) technique. The concentration of V, Cr, Mn, Cu, Zn, Ba, Rb, Zr, As, Br, Sr, and Pb was determined in the sediment samples. The extent of pollution to sediment was assessed via various pollution indices such as enrichment factor (EF), contamination factor (CF), geo accumulation index (I<sub>geo</sub>), metal pollution load index (MPI), degree of contamination (Cd), modified contamination degree (mCd), and potential contamination index (Cp) based on the corresponding background values. The source of origin of heavy metals and the correlation amongst the studied elements was studied using multivariate analysis approach (Pearson correlation matrix, principal component analysis and cluster analysis). The Sediment Quality Guidelines (SQGs) was applied to understand the ecotoxicological significance of heavy metal toxicity. The observed concentration of heavy metals in the studied sediments is due to anthropogenic activity and also from the discharge of municipal wastewater, domestic sewage, fishing harbor activities, industrial and aquaculture pollutants. A regular surveillance and remedial measures for contaminant discharge may reduce the metal content in the study area.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100151"},"PeriodicalIF":0.0,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157907","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}

引用次数: 0

The influence of reactor hall on the measurement of reactivity using prompt neutron method

Nuclear Analysis Pub Date : 2024-12-16 DOI: 10.1016/j.nucana.2024.100150

Hui Gao, Meng Li

引用次数: 0

Correlation between microscopic degradation mechanism and macroscopic mechanical property of epoxy resin based on low molecular weight radiolysis products

Nuclear Analysis Pub Date : 2024-12-01 DOI: 10.1016/j.nucana.2024.100143

Lei Yu , Shuai Chen , Jianming Zhou , Shuai Liu , Bo Liu , Jing Peng , Shuo Hou , Yinyong Ao

{"title":"Correlation between microscopic degradation mechanism and macroscopic mechanical property of epoxy resin based on low molecular weight radiolysis products","authors":"Lei Yu , Shuai Chen , Jianming Zhou , Shuai Liu , Bo Liu , Jing Peng , Shuo Hou , Yinyong Ao","doi":"10.1016/j.nucana.2024.100143","DOIUrl":"10.1016/j.nucana.2024.100143","url":null,"abstract":"<div><div>Low molecular weight radiolysis products play an important role in the performance change and degradation mechanism of polymer materials. In this study, the radiolysis products with low molecular weight of epoxy resin were detected, identified and quantified through solid phase microextraction combined with gas chromatography-mass spectrometry (SPME-GC-MS). The qualitative results showed that most of radiolysis products of epoxy resin were phenols and ketones. The result of principal component analysis showed that the composition of radiolysis products produced at different absorbed doses had obvious difference, indicating that the degradation degree of epoxy resin was different at different absorbed dose. Phenol can be used as an indicator product to reflect the change of tensile strengrh. It indicated that the identification of the radiolysis products was useful for studying the degradation mechanisms and predicting the degradation degree of epoxy resin. Accordingly, the radiation-induced degradation mechanisms were proposed according to the radiolysis products and theoretical calculations.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 4","pages":"Article 100143"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093871","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}

引用次数: 0

New single-toroidal sintered diamond anvil and assembly for high pressure neutron diffraction

Nuclear Analysis Pub Date : 2024-11-08 DOI: 10.1016/j.nucana.2024.100142

Leiming Fang, Gongzhang Yang, Guoliang Niu, Ruiqi He, Jiacheng Sun, Xiping Chen, Lei Xie

{"title":"New single-toroidal sintered diamond anvil and assembly for high pressure neutron diffraction","authors":"Leiming Fang, Gongzhang Yang, Guoliang Niu, Ruiqi He, Jiacheng Sun, Xiping Chen, Lei Xie","doi":"10.1016/j.nucana.2024.100142","DOIUrl":"10.1016/j.nucana.2024.100142","url":null,"abstract":"<div><div><em>In-situ</em> high pressure neutron diffraction experiments, which require a large volume samples, remain challenging, particularly when generating simultaneous high pressure-temperature (<em>P</em>-<em>T</em>) conditions. Although high pressure neutron diffraction experiments have been successfully extended to pressures exceeding 20 GPa, generating pressures over 10 GPa with a large sample volume in the millimeter scale is still difficult. Based on the strategy of introducing gaskets in multi-anvil press, a new single-toroidal sintered diamond anvil and high <em>P</em>-<em>T</em> assembly have been designed for use in the Paris-Edinburgh press, to promoting the neutron diffraction technique with a broadened <em>P</em>-<em>T</em> range. This new single-toroidal set-up can achieve pressure exceeding 14 GPa, with a pressure generating efficiency is nearly same as that of double-toroidal anvil, and exhibits remarkable stability during high <em>P</em>-<em>T</em> experiments. The high <em>P</em>-<em>T</em> neutron diffraction experiments demonstrate that the new set-up can achieves a pressure of 8.7(1) GPa and a temperature of 1380(15) K with a large sample volume of 38 mm<sup>3</sup>.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100142"},"PeriodicalIF":0.0,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157908","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}

引用次数: 0

Investigation of photon interaction parameters in Human Body Tissues using GAMOS, FLUKA, and XCOM Studies 利用 GAMOS、FLUKA 和 XCOM 研究调查人体组织中的光子相互作用参数

Nuclear Analysis Pub Date : 2024-10-15 DOI: 10.1016/j.nucana.2024.100141

A. Arectout , H. Boukhal , M. Jarmouni , K. Laazouzi , M. Assalmi , A. Nouayti , M. Hadouachi , H. El Yaakoubi , E. Chakir

{"title":"Investigation of photon interaction parameters in Human Body Tissues using GAMOS, FLUKA, and XCOM Studies","authors":"A. Arectout , H. Boukhal , M. Jarmouni , K. Laazouzi , M. Assalmi , A. Nouayti , M. Hadouachi , H. El Yaakoubi , E. Chakir","doi":"10.1016/j.nucana.2024.100141","DOIUrl":"10.1016/j.nucana.2024.100141","url":null,"abstract":"<div><div>This study aims to evaluate different photon interaction parameters of human body organs at nine photon energies (0.021 keV–1.25 MeV) using GAMOS and FLUKA Monte Carlo codes. The Mass attenuation coefficients, Mean Free Path, Half Value Layer, Tenth Value Layer, and Mass absorption coefficients of the breast, lung, kidney, pancreas, liver, eye lens, thyroid, brain, ovary, heart, large intestine blood, skin, spleen, muscle, and cortical bone were investigated and compared against the standard values available from the tables of XCOM database. This comparison demonstrated a good agreement, with all calculated values deviating less than 6 %. In addition, the values obtained with the GAMOS code were similar to those obtained using the FLUKA code. These comparisons indicate very good agreement and revealed that both FLUKA and GAMOS codes can be used as a computational tool for determining the photon interaction parameters of any material and also different energies, whose data are not available in the literature.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100141"},"PeriodicalIF":0.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527819","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}

引用次数: 0

Optimizing neutron shielding: A specialised container approach for Disused Sealed Radioactive Sources and orphan neutron emitters 优化中子屏蔽：废弃密封放射源和无主中子发射器的专用容器方法

Nuclear Analysis Pub Date : 2024-10-10 DOI: 10.1016/j.nucana.2024.100140

Brahim EL Azzaoui , Ouadie Kabach , Mohamed Youssef Messous , El mahjoub Chakir , El Mehdi Alibrahmi

{"title":"Optimizing neutron shielding: A specialised container approach for Disused Sealed Radioactive Sources and orphan neutron emitters","authors":"Brahim EL Azzaoui , Ouadie Kabach , Mohamed Youssef Messous , El mahjoub Chakir , El Mehdi Alibrahmi","doi":"10.1016/j.nucana.2024.100140","DOIUrl":"10.1016/j.nucana.2024.100140","url":null,"abstract":"<div><div>Shielding Disused Sealed Radioactive Sources (DSRSs) and orphan neutron sources, such as <sup>252</sup>Cf, pose challenges due to the high penetration of neutrons, induced radioactivity in shielding materials, and the limited availability of compact, effective shielding materials. This study addresses these challenges by proposing a specialized container for the safe transport, conditioning, and disposal of neutron-emitting DSRSs and orphan sources. The computational tool that was used in this study is the Monte Carlo N-Particle (MCNP). The investigation begins with an examination of moderation materials, including high-density polyethylene (HDPE), paraffin, and water-extended polyester (WEP). Subsequently, four concrete types, namely Ordinary, Barite, Portland, and Serpentine Concrete, are scrutinized. Employing a comprehensive methodology, the design of the container is optimized to effectively moderate and absorb neutron emissions. The findings of this study demonstrate that the designed compact container can safely handle activities exceeding those studied, effectively managing up to 10 μg (about 0.2 GBq) <sup>252</sup>Cf without exceeding 25 μSv/h at the outer container contact. This suggests a promising solution for the secure management of high-activity neutron-emitting sources.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100140"},"PeriodicalIF":0.0,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441061","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}

引用次数: 0

A comparative analysis of the NaI detector response function using GAMOS and FLUKA Monte Carlo simulations 利用 GAMOS 和 FLUKA 蒙特卡罗模拟对碘化钠探测器响应函数进行比较分析

Nuclear Analysis Pub Date : 2024-09-23 DOI: 10.1016/j.nucana.2024.100138

A. Arectout , H. Boukhal , E. Chakir , M. Jarmouni , M. Assalmi , T. El Ghalbzouri , O.E. Belhaj , Mohamed Drissi El-Bouzaidi , A. Nouayti , I. Zidouh , H. El Yaakoubi

{"title":"A comparative analysis of the NaI detector response function using GAMOS and FLUKA Monte Carlo simulations","authors":"A. Arectout , H. Boukhal , E. Chakir , M. Jarmouni , M. Assalmi , T. El Ghalbzouri , O.E. Belhaj , Mohamed Drissi El-Bouzaidi , A. Nouayti , I. Zidouh , H. El Yaakoubi","doi":"10.1016/j.nucana.2024.100138","DOIUrl":"10.1016/j.nucana.2024.100138","url":null,"abstract":"<div><div>This work aims to study the response function of a 2″×2″ NaI(Tl) scintillation detector using Monte Carlo simulations. A precise mathematical model of the NaI(Tl) scintillator was developed using both FLUKA and GAMOS Monte Carlo simulation software. The photon pulse height distributions of the NaI(Tl) without influence of its energy resolution, obtained with FLUKA and GAMOS codes, were converted into a real NaI(Tl) response function using the necessary conversion process. Spectral characteristics such as full-energy peak efficiency, energy resolution, peak-to-Compton ratio, and peak-to-total ratio were investigated by simulation at different gamma-ray energy obtained from <sup>109</sup>Cd, <sup>137</sup>Cs, <sup>54</sup>Mn, <sup>65</sup>Zn, and <sup>60</sup>Co sources. The simulated spectra from the GAMOS code were consistent with those generated by the FLUKA code. Additionally, the comparison between simulated results and experimental data demonstrated good agreement. The validation of the computational models used for the NaI(Tl) detector in both FLUKA and GAMOS software was successfully achieved, confirming the accuracy of the simulations in replicating the detector's response.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 4","pages":"Article 100138"},"PeriodicalIF":0.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323148","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}

引用次数: 0

Coulomb interaction dependence of optimal energy to synthesize superheavy elements 合成超重元素的最佳能量与库仑相互作用的关系

Nuclear Analysis Pub Date : 2024-09-21 DOI: 10.1016/j.nucana.2024.100137

H.C. Manjunatha , N. Sowmya , K.N. Sridhar

{"title":"Coulomb interaction dependence of optimal energy to synthesize superheavy elements","authors":"H.C. Manjunatha , N. Sowmya , K.N. Sridhar","doi":"10.1016/j.nucana.2024.100137","DOIUrl":"10.1016/j.nucana.2024.100137","url":null,"abstract":"<div><div>The production of superheavy elements beyond Z <span><math><mo>=</mo></math></span> 118 remains unattained through both cold and hot fusion techniques, primarily due to inadequate fusion reaction optimization involving projectile–target combinations and energy. Past efforts employed various theories to optimize these combinations. In our current study, we have successfully identified optimal fusion energies for synthesizing superheavy elements, employing an advance statistical model and dinuclear system models. The establishment of optimal energy governing rule is achieved through a comprehensive examination of the Coulomb interaction parameter, enabling precise determination of the optimal energy for successful fusion reactions in synthesizing superheavy elements. The confidence level of predicting optimal energies using the present formula varies between 97% to 99%. The predicted optimal energy using the present formula for five fusion reactions such as <sup>208</sup>Pb(<sup>50</sup>Ti,1n)<sup>257</sup>Rf, <sup>208</sup>Pb(<sup>50</sup>Ti,2n)<sup>256</sup>Rf, <sup>209</sup>Bi(<sup>50</sup>Ti,1n)<sup>258</sup>Db, <sup>208</sup>Pb(<sup>58</sup>Fe,1n)<sup>265</sup>Hs, and <sup>244</sup>Pu(<sup>48</sup>Ca,4n)<sup>288</sup>Fl were studied and are in good agreement with each other. Furthermore, we predicted the Optimal energies for fusion reactions leading to synthesize the superheavy element Z <span><math><mo>=</mo></math></span> 119 and 120. The presented empirical rule will certainly bring a revolution in the synthesis of superheavy elements.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 4","pages":"Article 100137"},"PeriodicalIF":0.0,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142328252","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}

引用次数: 0

Electrodeposition of actinides: Optimization of deposition parameters by chronoamperometric studies 锕系元素的电沉积：通过计时器研究优化沉积参数

Nuclear Analysis Pub Date : 2024-09-14 DOI: 10.1016/j.nucana.2024.100136

Fabiola Monroy-Guzmán, Luis Escobar Alarcón

{"title":"Electrodeposition of actinides: Optimization of deposition parameters by chronoamperometric studies","authors":"Fabiola Monroy-Guzmán, Luis Escobar Alarcón","doi":"10.1016/j.nucana.2024.100136","DOIUrl":"10.1016/j.nucana.2024.100136","url":null,"abstract":"<div><div>To quantify alpha-emitting radionuclides by alpha spectrometry, it is necessary to prepare a thin and uniform alpha source on a suitable substrate. Electrodeposition is the most used electrochemical technique for this purpose. In order to better understand the electrochemical process carried out in the electrodeposition of actinides, in particular the selection of the current densities applied, a chronoamperometric study of the electrodeposition of actinides (Th, U, Pu, Am and Cm), in three different electrolytes (Na<sub>2</sub>SO<sub>4</sub>/H<sub>2</sub>SO<sub>4</sub>, NH<sub>4</sub>NO<sub>3</sub>, NaF) using stainless steel and platinum as cathode and anode, respectively, is presented. The corresponding polarization curves (potential vs. current density), characteristic for each electrolyte and actinide used, were constructed from the chronoamperometric data. The limiting diffusion current as well as the minimum current necessary for the electrodeposition process to take place were determined. To achieve a quantitative electrodeposition of actinides, a balance between OH<sup>−</sup> production and the thickness of the OH<sup>−</sup> layer formed near the cathode must be reached. These parameters are controlled by the electrolyte used and the current density applied to the electrochemical system. Actinides were electrodeposited mainly in the form of oxides, according to Raman spectroscopy results.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100136"},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527818","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}

引用次数: 0

Major and trace elements determination in organic and conventional Moroccan vegetables using the k0-standardisation method of neutron activation analysis 利用中子活化分析 k0 标准化方法测定摩洛哥有机蔬菜和常规蔬菜中的主要元素和微量元素

Nuclear Analysis Pub Date : 2024-08-16 DOI: 10.1016/j.nucana.2024.100127

Sanaa Said , Hamid Bounouira , Hamid Amsil , Ilias Aarab , Abdelwahab Badague , Soufya El Basraoui , Ahmad Moussaif , Bouchra Benazzouz

{"title":"Major and trace elements determination in organic and conventional Moroccan vegetables using the k0-standardisation method of neutron activation analysis","authors":"Sanaa Said , Hamid Bounouira , Hamid Amsil , Ilias Aarab , Abdelwahab Badague , Soufya El Basraoui , Ahmad Moussaif , Bouchra Benazzouz","doi":"10.1016/j.nucana.2024.100127","DOIUrl":"10.1016/j.nucana.2024.100127","url":null,"abstract":"<div><p>The aim of the present work is the determination of different essential (minor and trace) elements found in five Moroccan vegetables collected from large commercial markets in Kenitra city, Morocco, and in some organic vegetables which were traditionally grown without the use of pesticides or chemical fertilizers, in a plot located in the rural commune of Dar Laaslouji, 48 km from Kenitra city. The k0-standardisation method of the Neutron Activation Analysis (k0-INAA) using the TRIGA Mark II research reactor of 2 MW at the National Centre for Nuclear Energy, Science and Technology (CNESTEN) and gamma-ray spectroscopy facility were employed. For quality control, the accuracy of measurements has been investigated using certified reference materials (IAEA-336 lichens, and NIST SRM 1547 peach leaves) which were analyzed simultaneously with the samples. Good agreement was found between certified and determined values. The primary results are presented and discussed for the concentration of minor and trace elements in some vegetables (tomatoes, carrots, green peppers, cilantro and mint), that are widely used in Moroccan meals.</p></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"3 4","pages":"Article 100127"},"PeriodicalIF":0.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2773183924000272/pdfft?md5=b1d34d7429818ab97b003d1bac920b82&pid=1-s2.0-S2773183924000272-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142058495","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}

引用次数: 0