Nuclear Analysis最新文献

A nondestructive method based on absorption of polychromatic neutron beam for monitoring internal gas of sealed container 基于多色中子束吸收的密封容器内部气体无损监测方法

Nuclear Analysis Pub Date : 2025-04-08 DOI: 10.1016/j.nucana.2025.100173

Xinxi Li , Bo Li , Yun Wang , Liang Chen , Xiaoling Xiong , Jie Chen , Lin Zou , Chaoqiang Huang , Dong Liu

{"title":"A nondestructive method based on absorption of polychromatic neutron beam for monitoring internal gas of sealed container","authors":"Xinxi Li , Bo Li , Yun Wang , Liang Chen , Xiaoling Xiong , Jie Chen , Lin Zou , Chaoqiang Huang , Dong Liu","doi":"10.1016/j.nucana.2025.100173","DOIUrl":"10.1016/j.nucana.2025.100173","url":null,"abstract":"<div><div>Current work introduces a non-destructive testing method for evaluating the gas retention and internal pressure of sealed containers. Pulsed polychromatic neutrons of time-of-flight (TOF) neutron reflectometer <em>Diting</em> at the China Mianyang research reactor (CMRR) were utilized as the probe. By analyzing the transmitted neutron spectrum and employing an inversion fitting technique, the internal gas pressure with high accuracy up to 3 % can be determined. This method capitalizes on the large absorption cross-section of <sup>3</sup>He gas, which provides the sensitivity required for detecting minute changes. The high intensity of the transmitted neutron beam enables rapid data collection, facilitating in situ measurement. The technique offers a direct measure of the gas pressure within sealed containers, which is significant for applications requiring quality control and safety measures, such as inertial confinement fusion (ICF) target pellet development and other non-destructive testing in various industries where the integrity and performance of sealed systems are paramount.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 2","pages":"Article 100173"},"PeriodicalIF":0.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834908","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

A novel approach with quadrupole magnets for precise deflection, scattering and focusing of very high energy electron beams (VHEE) 利用四极磁体实现高能电子束精确偏转、散射和聚焦的新方法

Nuclear Analysis Pub Date : 2025-04-03 DOI: 10.1016/j.nucana.2025.100172

Mustapha Assalmi , Abdullah Alshreef , Sofia Jebbari , Assia Arectout , Pedro Arce , El Yamani Diaf

{"title":"A novel approach with quadrupole magnets for precise deflection, scattering and focusing of very high energy electron beams (VHEE)","authors":"Mustapha Assalmi , Abdullah Alshreef , Sofia Jebbari , Assia Arectout , Pedro Arce , El Yamani Diaf","doi":"10.1016/j.nucana.2025.100172","DOIUrl":"10.1016/j.nucana.2025.100172","url":null,"abstract":"<div><div>A novel approach involving quadrupole magnets has been proposed to deflect and disperse electrons in the irradiation fields, as well as a system for focusing beams at specific depths. This research also presents a comparison between VHEE and conventional radiotherapy, supported by the validation of our Monte Carlo simulations using real measurement data for low-energy electrons (6, 9 and 15 MeV) in water and air, thus ensuring the reliability of our results. Simulations demonstrate high accuracy, with agreement with measurement data of up to 0.58 % and less than 1.86 % for all validated energies and fields. The results show a significant reduction in entrance dose (82.4 %) with focused beams compared to unfocused beams, as well as a 17.6 % reduction at a depth of 30 cm. The study of the spread electron peak (SOEP) for 4 focused beams varies in magnetic field intensity to cover a depth of 11 cm–18 cm, with an entrance dose at a depth of 0.5 mm of 27.15 % and 24.5 % of the exit dose at a depth of 40 cm. The VHEEs also offer the advantage of low Linear Energy Transfer (LET) compared with protons, which reduces the risk of damage several times over.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 2","pages":"Article 100172"},"PeriodicalIF":0.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792732","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

Recent advancements of organic scintillators in enhancing the performance of fast neutron detection: A review 有机闪烁体在提高快中子探测性能方面的最新进展综述

Nuclear Analysis Pub Date : 2025-03-26 DOI: 10.1016/j.nucana.2025.100171

D. Arun Kumar , E. Parthiban

引用次数: 0

Dose distribution comparison using image registration principles 基于图像配准原理的剂量分布比较

Nuclear Analysis Pub Date : 2025-03-24 DOI: 10.1016/j.nucana.2025.100170

Meryeme Bellahsaouia , Ibtissam Zidouh , Ouadie Kabach , Wafae Chfeq , Assia Arctout , Taher Elkhoukhi , Elmahjoub Chakir

{"title":"Dose distribution comparison using image registration principles","authors":"Meryeme Bellahsaouia , Ibtissam Zidouh , Ouadie Kabach , Wafae Chfeq , Assia Arctout , Taher Elkhoukhi , Elmahjoub Chakir","doi":"10.1016/j.nucana.2025.100170","DOIUrl":"10.1016/j.nucana.2025.100170","url":null,"abstract":"<div><div>Radiotherapy relies on accurate dose distribution comparison methods, but current approaches have limitations. This study introduces a novel algorithm based on image registration principles to address these limitations. The algorithm uses a transformation matrix derived from image registration to align an evaluated dose distribution with a reference distribution. This transformation employs multiple steps: detecting keypoints, constructing descriptors, matching keypoints, and estimating an affine transformation matrix. The transformed distribution is then directly comparable to the reference through linear least squares regression. Validation on 174 dose distribution pairs demonstrated robust performance, with bias and precision within clinically acceptable limits. Linearity assessments confirmed consistent behavior across a wide range of dose intensities. Comparisons with gamma analysis showed substantial agreement (Cohen's Kappa: 0.77), while additional metrics highlighted its clinical suitability: precision (0.98), recall (0.95), accuracy (0.94), specificity (0.86), and F1-score (0.96). These results establish the algorithm as a promising complement to gamma analysis, with strong potential for clinical integration.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 2","pages":"Article 100170"},"PeriodicalIF":0.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725531","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

Elastic scattering of Lithium induced nuclear reactions 锂诱导核反应的弹性散射

Nuclear Analysis Pub Date : 2025-03-01 DOI: 10.1016/j.nucana.2025.100153

S. Madhu , Reddi Rani L. , H.C. Manjunatha , N. Sowmya , H.S. Anushree , Krishnakanth E.

{"title":"Elastic scattering of Lithium induced nuclear reactions","authors":"S. Madhu , Reddi Rani L. , H.C. Manjunatha , N. Sowmya , H.S. Anushree , Krishnakanth E.","doi":"10.1016/j.nucana.2025.100153","DOIUrl":"10.1016/j.nucana.2025.100153","url":null,"abstract":"<div><div>A total of 347 experimentally accessible lithium-induced fusion reactions at various energies were analyzed. The study utilized real nuclear potential and volume imaginary potential within the optical model framework, with elastic cross-sections calculated using the FRESCO code. The value derived from the optical model agrees well with existing results at various scattering angles. The study refines existing empirical relations for elastic scattering by improving predictive accuracy and expanding their applicability to under explored reaction channels. Compared to previous models, our relations achieve better alignment with experimental data for lithium-induced reactions, particularly at higher energies. The standard deviation derived from the empirical relationship with that of experimental data is observed to be smaller. Elastic scattering cross-sections of <span><math><msup><mrow></mrow><mrow><mn>6</mn><mo>,</mo><mn>7</mn></mrow></msup></math></span>Li-induced fusion reactions are function of the Coulomb-interaction parameter and center of mass energy. As a result, the current methodology may be used to forecast elastic scattering cross-sections of <span><math><msup><mrow></mrow><mrow><mn>6</mn><mo>,</mo><mn>7</mn></mrow></msup></math></span>Li-induced fusion reactions in unknown isotopes of targets ranging from Li to Bi.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100153"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642496","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

Use GIS technical to map natural radioactivity in soil samples for the University of Kufa, Iraq 利用GIS技术绘制伊拉克库法大学土壤样品中的天然放射性

Nuclear Analysis Pub Date : 2025-03-01 DOI: 10.1016/j.nucana.2024.100139

Abrrar Abbas Ibrahim , Abdalsattar K. Hashim , Ali Abid Abojassim

{"title":"Use GIS technical to map natural radioactivity in soil samples for the University of Kufa, Iraq","authors":"Abrrar Abbas Ibrahim , Abdalsattar K. Hashim , Ali Abid Abojassim","doi":"10.1016/j.nucana.2024.100139","DOIUrl":"10.1016/j.nucana.2024.100139","url":null,"abstract":"<div><div>GIS \"Geographic Information System\" technology was used to map the specific activity (S.A.) of primordial radionuclides <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K in selected soil samples for twelve locations at the University of Kufa, Iraq. S.A. values were determined using gamma spectrometry type NaI(Tl) with volume “3 × 3”. Also, the values of radiological parameters such as Ra<sub>eq</sub> \"radium equivalent\", H<sub>ex</sub> \"external hazard index\", I<sub>γr</sub> \"representative gamma risk index\", D<sub>r</sub> \"Absorbed Dose rate\", AEDE<sub>outdoor</sub> \"Annual Effective Dose Equivalent in outdoor\", and ELCR \"Excess Lifetime Cancer Risk\" were determined. The average value of S.A. for <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K was 10.35 ± 0.9 Bq/kg, 7.31 ± 1.8 Bq/kg, and 256.19 ± 55.7 Bq/kg, respectively. While, the average values of Ra<sub>eq</sub> (Bq/kg), H<sub>ex,</sub> I<sub>γr</sub>, D<sub>r</sub> (nGy/h), AEDE<sub>outdoor</sub> (mSv/y), and ELCR were 48.00, 0.130, 0.373, 23.70, 0.029, and 0.102 × 10<sup>−3</sup>, respectively. The results of S.A. and each radiological parameter of the study area locations were low according to acceptable level reports by UNSCEAR, ICRP, and OCDE. Therefore, it can be concluded that the soil samples of the University of Kufa were safe.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100139"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642494","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

Measurement of natural radioactivity and assessment of radiological hazard indices in soil from Tirunelveli District, Tamil Nadu, India with statistical approach 印度泰米尔纳德邦Tirunelveli地区土壤天然放射性的测量和放射性危害指数的统计方法评估

Nuclear Analysis Pub Date : 2025-03-01 DOI: 10.1016/j.nucana.2025.100156

T. Krishnamoorthi , Satyanarayan Bramha , S. Chandrasekaran , R. Ravichandaran , S. Sivakumar , R. Ravisankar

{"title":"Measurement of natural radioactivity and assessment of radiological hazard indices in soil from Tirunelveli District, Tamil Nadu, India with statistical approach","authors":"T. Krishnamoorthi , Satyanarayan Bramha , S. Chandrasekaran , R. Ravichandaran , S. Sivakumar , R. Ravisankar","doi":"10.1016/j.nucana.2025.100156","DOIUrl":"10.1016/j.nucana.2025.100156","url":null,"abstract":"<div><div>The activity concentrations of naturally occurring radionuclides <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K were determined in 31 soil samples collected from the Tirunelveli District of Tamil Nadu using grid sampling method. Gamma-ray spectrometry was applied using NaI(Tl) detector and a PC-based MCA. The mean radioactivity concentrations of <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K were found to be 12.98 Bq.kg<sup>−1,</sup> 162.89 Bq.kg<sup>−1</sup> and 453.04 Bq.kg<sup>−1</sup>, respectively. The spatial map of the radionuclides was drawn and is discussed. The radiological hazards associated with soils were determined using radium equivalent activity (Ra<sub>eq</sub>), annual gonadal dose equivalent (AGDE), activity utilization index (AUI), internal hazard index (H<sub>in</sub>) external hazard index (H<sub>ex</sub>) and gamma representative level index (I<sub>γ</sub>), were calculated. Results were discussed and compared with the internationally recommended approved values. Statistical method was used to determine the natural associations between samples and variables. This work may provide baseline data for future soil radioactive environmental monitoring and the results of the study can serve as a reference for future radiological assessments.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100156"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642491","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

Natural radioactivity assessments and radiological hazards in agricultural soils around mining activities in Karibib, Namibia 纳米比亚卡里比卜采矿活动周围农业土壤的自然放射性评估和放射性危害

Nuclear Analysis Pub Date : 2025-03-01 DOI: 10.1016/j.nucana.2025.100155

Sylvanus Ameh Onjefu , Biere Peter Ebibuloami , Caspah Kamunda , Markus Hitila , Marius Kudumo Mutorwa , Jeya Kudi Kennedy , Euodia Hess , Damian C. Onwudiwe

{"title":"Natural radioactivity assessments and radiological hazards in agricultural soils around mining activities in Karibib, Namibia","authors":"Sylvanus Ameh Onjefu , Biere Peter Ebibuloami , Caspah Kamunda , Markus Hitila , Marius Kudumo Mutorwa , Jeya Kudi Kennedy , Euodia Hess , Damian C. Onwudiwe","doi":"10.1016/j.nucana.2025.100155","DOIUrl":"10.1016/j.nucana.2025.100155","url":null,"abstract":"<div><div>A total of 17 soil samples were randomly collected from agricultural farms around mining areas from Karibib, Erongo region, Namibia. The samples were analyzed for natural radioactivity using a high purity germanium (HPGe) detector. The average activity concentrations of <sup>226</sup>Ra, <sup>232</sup>Th and <sup>40</sup>K were 80.80, 73.60, and 493.96 Bq.kg <sup>– 1</sup> respectively. The radiological assessments were calculated in terms of radium equivalent activity (224.09 Bq.kg <sup>– 1</sup>), absorbed dose rate (102.39 nGy h-<sup>1</sup>), annual effective dose equivalent (indoor and outdoor) (1.26 mSv y <sup>– 1</sup> and 5.02 mSv y <sup>– 1</sup>) and the internal and external hazard indices (0.61) and (0.82) respectively. The average values of <sup>226</sup>Ra, <sup>232</sup>Th and <sup>40</sup>K were higher than the world average values as well as those of the radiological parameters of absorbed dose rate and annual effective dose equivalent. The average values of radium equivalent activity, and the indices radiological hazards were below the internationally acceptable limits.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100155"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642551","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

Potential health risk assessment of sediment and water in some Niger Delta areas of Nigeria 尼日利亚一些尼日尔三角洲地区沉积物和水的潜在健康风险评估

Nuclear Analysis Pub Date : 2025-03-01 DOI: 10.1016/j.nucana.2025.100159

Damaris Osiga-Aibangbee, Omamoke O.E. Enaroseha, Godwin K. Agbajor

{"title":"Potential health risk assessment of sediment and water in some Niger Delta areas of Nigeria","authors":"Damaris Osiga-Aibangbee, Omamoke O.E. Enaroseha, Godwin K. Agbajor","doi":"10.1016/j.nucana.2025.100159","DOIUrl":"10.1016/j.nucana.2025.100159","url":null,"abstract":"<div><div>The Niger Delta areas of Nigeria suffer substantial environmental issues owing to radionuclides pollution in sediment and water. These places are vital for local residents, supplying drinking water, food, and livelihoods. However, exposure to radionuclides causes health concerns to both people and aquatic species. This research examines health risk in sediment and water from some chosen locations in Delta State, Nigeria. Twelve (12) sediment samples and Twelve (12) water samples were randomly chosen and gathered from four communities at a depth of 10 cm, with each location giving 200 g of samples spaced of minimum of 50 m apart. Analysis was done at the CERD - IFE utilizing Gamma Ray Spectrometry, which contained a thallium-activated 16″x16″ Sodium iodide [NaI(Tl)] detector to quantify the activity concentrations of <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K. The analysis indicated that activity concentrations in sediment samples for <sup>40</sup>K, <sup>238</sup>U, and, <sup>232</sup>Th varied from 294.29 ± 11.98 to 774.4 ± 10.92, 3.91 ± 0.06 to 14.13 ± 0.1, and 1.32 ± 0.05 to 5.29 ± 0.10 Bq/kg, respectively. In water samples, activity concentrations for <sup>40</sup>K, <sup>238</sup>U, and, <sup>232</sup>Th ranged from 232.32 ± 5.08 to 780.72 ± 9.31, 5.34 ± 0.06 to 11.29 ± 0.04, and 0.93 ± 0.04 to 3.07 ± 0.08 Bq/l, respectively. Base on health risk assessment, radium equivalent (Ra<sub>eq</sub>) values ranged from 242.34 to 556.41 Bq/kg, with a mean value of 396.21 Bq/kg and was found to exceed the international standard of 370 Bq/kg. The discrepancies are due to geological differences and the existence of radioactive thorium materials, variable behavior and metabolism. Although radionuclide hazard indices suggest that the communities are safe from radiation, the long-term impacts of low-dose radiation exposure might pose health problems, hence frequent monitoring of radioactive levels in sediments and water is advised.</div></div>","PeriodicalId":100965,"journal":{"name":"Nuclear Analysis","volume":"4 1","pages":"Article 100159"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642493","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

Chemical separation of uranium-233 from neutron-irradiated 232ThO2 targets using a dual-column technique 用双柱技术从中子辐照的232ThO2靶中分离铀-233

Nuclear Analysis Pub Date : 2025-03-01 DOI: 10.1016/j.nucana.2025.100157

Yu Sun, Muxiao Wu, Jijun Guo, Qingchuan Lin, Jun Tu, Xiang Xie

引用次数: 0