Applied Radiation and Isotopes最新文献

{"title":"Analysis of dosimetric properties of quartz crystals under gamma irradiation","authors":"K.S. Almugren ,&nbsp;Siti Norbaini Sabtu ,&nbsp;S.F. Abdul Sani ,&nbsp;Nur Husna Dzamrah ,&nbsp;M.N. Nurul Shahira ,&nbsp;A.S. Siti Shafiqah ,&nbsp;D.A. Bradley","doi":"10.1016/j.apradiso.2025.111699","DOIUrl":"10.1016/j.apradiso.2025.111699","url":null,"abstract":"<div><div>This study explored the thermoluminescence (TL) properties of various quartz types (amethyst, citrine, rock crystal, and rose quartz) when exposed to gamma irradiation, assessing their potential for dosimetric applications. Key aspects such as heating rate, glow curves, dose-response behavior, linearity index, sensitivity, and fading characteristics were analyzed for each quartz type. The results revealed significant differences in TL performance among the quartz samples, with each type exhibiting distinct characteristics under gamma irradiation. Amethyst displayed the most reliable TL behavior, with strong linearity and stable dose-response relationships, making it the most suitable candidate for radiation dosimetry. These findings contribute valuable insights into the selection of optimal quartz materials for radiation measurement, enhancing the precision and reliability of TL-based dosimetric techniques.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"218 ","pages":"Article 111699"},"PeriodicalIF":1.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of multi-detector soil radon measurement system based on IoT","authors":"Jinxuan Ding,&nbsp;Weihua Zeng,&nbsp;Shengli Hou,&nbsp;Nanping Wang,&nbsp;Cong Yu","doi":"10.1016/j.apradiso.2025.111700","DOIUrl":"10.1016/j.apradiso.2025.111700","url":null,"abstract":"<div><div>A multi-detector soil radon measurement system based on IoT (the Internet of Things) has been developed for the specific application of long-term monitoring of soil radon concentration in remote mining areas. The system utilizes the scintillation chamber method to measure radon concentration, with SiPM (Silicon photomultiplier) for photoelectric conversion. This is combined with temperature compensation technology and 'triple-proof' protection measures to enhance the anti-interference capability of the instrument, thereby indirectly ensuring the accuracy of the measurement results. To address the issue of inconvenient data networking in the field, a complementary 'NB-IoT (Narrow Band Internet of Things) + Bluetooth' dual wireless network transmission method is employed. Additionally, the online monitoring and management platform for soil radon concentration on the cloud server enables online monitoring and management of data.The developed system demonstrated a sensitivity of 1.56 cph/(Bq/m³), a relative error of ≤10%, and an relative standard deviation (RSD) of ≤5.59%. Additionally, the system exhibited an endurance of 53 h when powered by a 12Ah battery and connected to three measurement nodes. The calibrated system has conducted long-term monitoring of radon concentration in a uranium mining area. The test and practical application demonstrate that the developed system meets the requirements of field data networking and the expansion of multiple detection nodes, operates reliably, and enables long-term continuous online monitoring of radon concentration at multiple depths of a single measuring point and multiple measuring points in a region. This provides effective data support for soil radon-related research.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"218 ","pages":"Article 111700"},"PeriodicalIF":1.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143078508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ion implantation of the electron-capture nuclide 55Fe for measurements by means of metallic microcalorimeters","authors":"Thorben Niemeyer ,&nbsp;Daniel Mowitz ,&nbsp;Sebastian Berndt ,&nbsp;Jörn Beyer ,&nbsp;Holger Dorrer ,&nbsp;Christoph E. Düllmann ,&nbsp;Alexander Göggelmann ,&nbsp;Raphael Hasse ,&nbsp;Sebastian Kempf ,&nbsp;Tom Kieck ,&nbsp;Nina Kneip ,&nbsp;Karsten Kossert ,&nbsp;Andrea T. Loria Basto ,&nbsp;Christoph Mokry ,&nbsp;Michael Müller ,&nbsp;Ole J. Nähle ,&nbsp;Dennis Renisch ,&nbsp;Jörg Runke ,&nbsp;Dominik Studer ,&nbsp;Marcell P. Takács ,&nbsp;Klaus Wendt","doi":"10.1016/j.apradiso.2025.111693","DOIUrl":"10.1016/j.apradiso.2025.111693","url":null,"abstract":"<div><div>Precise measurements of fundamental decay data such as energies and transition probabilities of radioactive isotopes are important for the development of corresponding nuclear modelling, activity determination and various applications in science and technology. The EMPIR project PrimA-LTD -“Towards new Primary Activity standardisation methods based on Low-Temperature Detectors” - aims to measure the electron-capture decay of ⁵⁵Fe very precisely using Metallic Microcalorimeters (MMCs) with outstandingly high energy resolution. Using a high-statistics measurement, electron-capture probabilities shall be precisely determined and higher-order effects such as electron shake-up and shake-off shall be examined with unprecedented precision. A key to success for this project is sample preparation. This work reports on the implantation of ⁵⁵Fe into the 140 μm × 140 μm gold absorbers of the MMCs as a proof of principle for scalability. Building up on preparatory laser-spectroscopic studies on stable ⁵⁶Fe, laser resonance ionization at the RISIKO mass separator was used to produce a monoisotopic ⁵⁵Fe ion beam with the required specifications. Successful implantations of this isotope (i) into 32 test absorbers with about 0.7(2) Bq each and (ii) into various on-chip absorbers with an activity close to the requested 5 Bq per absorber are presented. The impact of the implantation on the quality of spectra is highlighted on the basis of first MMC test measurements.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"218 ","pages":"Article 111693"},"PeriodicalIF":1.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143063182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to \"Development of a CLYC-based wide dose rate range portable neutron-gamma detector\" [Appl. Radiati. Isot. [ARI_ 111629], (217)].","authors":"Yuliang Huang, Keqing Zhao, Chenyu Shan, Changqing Feng, Yichao Wang, Ziqi Wang, Kang Chang, Feng Liu, Wenzhang Xie, Shubin Liu","doi":"10.1016/j.apradiso.2025.111697","DOIUrl":"https://doi.org/10.1016/j.apradiso.2025.111697","url":null,"abstract":"","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":" ","pages":"111697"},"PeriodicalIF":1.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143045177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiological Zoning and Clearance Methodology of activated cables in the LHC accelerator at CERN","authors":"Patrycja Dyrcz,&nbsp;Angelo Infantino,&nbsp;Nabil Menaa,&nbsp;Safouane El-Idrissi,&nbsp;Heinz Vincke","doi":"10.1016/j.apradiso.2025.111692","DOIUrl":"10.1016/j.apradiso.2025.111692","url":null,"abstract":"<div><div>In the context of upgrading the Large Hadron Collider (LHC) to its High-Luminosity (HL-LHC) configuration, it is essential to conduct a thorough zoning classification and characterization of activated cables within the particle accelerator. To address this need, a methodology was developed to identify regions where materials can be cleared from regulatory control in compliance with the Swiss Radiation Protection Legislation.</div><div>The study begins with optimizing the elemental composition of cables and validating Monte Carlo FLUKA simulations using high-energy resolution gamma spectrometry (GS) and total gamma counting (TGC) measurements on 19 copper cable samples, collected during the winter shutdown 2023/2024.</div><div>This methodology enables performing radiological zoning and accurately defines the radiological classification of the cables installed in the LHC Points 1 and 5, including both the accelerator tunnel and service galleries, prior to dismantling.</div><div>Finally, the study proposes a conservative scaling factor for cable zoning and introduces a TGC figure of merit (FOM), representing a conservative activation scenario for the copper cable types.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"218 ","pages":"Article 111692"},"PeriodicalIF":1.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143073610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neutron-gamma pulse shape discrimination for organic scintillation detector using 2D CNN based image classification","authors":"Annesha Karmakar ,&nbsp;Anikesh Pal ,&nbsp;G. Anil Kumar ,&nbsp;Bhavika ,&nbsp;Vivek ,&nbsp;Mohit Tyagi","doi":"10.1016/j.apradiso.2024.111653","DOIUrl":"10.1016/j.apradiso.2024.111653","url":null,"abstract":"<div><div>This study shows an implementation of neutron-gamma pulse shape discrimination (PSD) using a two-dimensional convolutional neural network. The inputs to the network are snapshots of the unprocessed, digitized signals from a BC501A detector. By exposing a BC501A detector to a Cf-252 source, neutron and gamma signals were collected to create a training dataset. The realistic datasets were created using a data-driven approach for labeling the digitized signals, having classified snapshots of neutron and gamma pulses. Our algorithm was able to successfully differentiate neutrons and gammas with similar accuracy as the Charge Integration (CI) approach. Additionally, the independent dataset accuracy for our suggested 2D CNN-based PSD approach is 99%. In contrast to the traditional charge integration method, our suggested algorithm with data augmentation, is capable of extracting features from snapshots of the raw data based on the signal structures, making it computationally more efficient and also appropriate for other types of neutron detectors.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"217 ","pages":"Article 111653"},"PeriodicalIF":1.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143021744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiation dose assessment and establishment of diagnostic reference levels for MDP Tc-99m bone scans: A multi-hospital study in Saudi Arabia","authors":"Sultan Fahad Alhujaili ,&nbsp;A. Sulieman ,&nbsp;Ziyad Awadh Alrowaili ,&nbsp;Abdulaziz Saad A. Alshabibi ,&nbsp;Feras Alafer ,&nbsp;Mansour M. Alqahtani ,&nbsp;Hasan Salah ,&nbsp;Abdullah J. Alanezi ,&nbsp;Abdullah S. AlRashidi ,&nbsp;Mohamed Abuzaid","doi":"10.1016/j.apradiso.2025.111695","DOIUrl":"10.1016/j.apradiso.2025.111695","url":null,"abstract":"<div><h3>Background</h3><div>Bone scans using technetium-99m methylene diphosphonate (99mTc-MDP) are widely used in nuclear medicine for diagnosing various bone disorders. However, the radiation exposure associated with these procedures necessitates careful consideration and optimization.</div></div><div><h3>Aim</h3><div>This study aimed to evaluate radiation doses in terms of Effective Dose (ED) and establish Diagnostic Reference Levels (DRLs) for 99mTc-MDP bone scans in Saudi Arabia.</div></div><div><h3>Method</h3><div>Data were collected from 345 bone scan procedures across three hospitals in Saudi Arabia. Patient demographics, administered activities, and CT dose indicators were recorded. EDs were calculated using the RADAR Medical Procedure Radiation Dose Calculator. DRLs were established using the 75th percentile of administered activities.</div></div><div><h3>Results</h3><div>The study revealed variations in EDs across the three hospitals, with means ranging from 4.14 to 5.46 mSv for 99mTc-MDP bone scans. CT dose indicators were generally lower than those reported in some international studies. The established DRLs (75th percentile) for administered activities were 771 MBq, 841 MBq, and 1006.4 MBq for the three hospitals, respectively. These values were within the range of international DRLs but showed some variation compared to other Saudi Arabian studies.</div></div><div><h3>Conclusion</h3><div>This study provides valuable insights into current practices for 99mTc-MDP bone scans in Saudi Arabia. The observed variations in doses and established DRLs highlight the need for standardization and optimization of protocols across hospitals. These findings can serve as a benchmark for nuclear medicine facilities in Saudi Arabia, promoting radiation safety while maintaining diagnostic quality.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"218 ","pages":"Article 111695"},"PeriodicalIF":1.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143045612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating the Li2O-Al2O3-B2O3 matrix: A promising approach for immobilizing radioactive waste","authors":"Syaza Amira Zulkeplee,&nbsp;Nor Ezzaty Ahmad,&nbsp;Mohamad Syazwan Mohd Sanusi,&nbsp;Suhairul Hashim","doi":"10.1016/j.apradiso.2025.111696","DOIUrl":"10.1016/j.apradiso.2025.111696","url":null,"abstract":"<div><div>Dealing with radioactive waste, particularly from various industrial processes, poses significant challenges. This paper explores the use of lithium aluminate borate (Li-Al-B) glass matrix as an alternative method for immobilizing radioactive waste, focusing specifically on waste generated in tin smelting industries, known as tin slag. The study primarily concentrates on transforming tin slag, a byproduct abundant in Natural Occurring Radioactive Material (NORM), into a stable and safe form for disposal. The experimental procedures involve blending different compositions of tin slag and Li-Al-B glass, followed by melting them at 1000 °C for 1 h and then rapidly cooling to room temperature. The resulting glass waste identifies an optimal weight percentage of waste loading (typically ranging from 25% to 45%), to minimize volume while effectively immobilizing radioactive material. Notably, the glass waste exhibited an amorphous phase during the product consistency test (PCT) process, demonstrating the fundamental relationship between waste composition and immobilization efficiency. Energy dispersive X-ray spectroscopy (EDX) analysis confirmed a uniform distribution of major elements within the glass waste, underscoring its structural integrity. Furthermore, the dissolution rate of key elements in the glass waste is analyzed, revealing a robust resistance to leaching under varying pH conditions. The normalized mass loss of Boron (B), Lithium (Li), and Aluminum (Al) consistently remain below established glass limits (&lt;2 gm^-2), indicative of the glass's exceptional durability. In conclusion, these findings highlight the potential effectiveness of Li-Al-B glass as a versatile host material for immobilizing solid radioactive waste, extending beyond its initial application with tin slag. By highlighting the positive qualities of this matrix, the study emphasizes its potential flexibility in accommodating various types of solid waste matrices.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"218 ","pages":"Article 111696"},"PeriodicalIF":1.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143051416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"99mTc radiolabeling of palm shell charcoal: A preliminary study for potential lung ventilation scintigraphy agent","authors":"I. Saptiama ,&nbsp;M. Munir ,&nbsp;I.S. Qaira ,&nbsp;F. Rindiyantono ,&nbsp;A. Nurmanjaya ,&nbsp;K.E. Prasetya ,&nbsp;M. Subechi ,&nbsp;Marlina ,&nbsp;Abidin ,&nbsp;G. Suhariyono ,&nbsp;Ferry ,&nbsp;K.S.S. Putri ,&nbsp;A.S. Wismogroho ,&nbsp;C. Firdharini","doi":"10.1016/j.apradiso.2025.111689","DOIUrl":"10.1016/j.apradiso.2025.111689","url":null,"abstract":"<div><div>To investigate the potential of activated carbon from palm kernel shell waste for ^99mTc-radiolabeled nanocarbon aerosol, a new production technology for carbon-based ^99mTc-radioaerosol from such a waste was developed. Treated-palm shell charcoal (t-PSC) was prepared by hydrothermal method to increase the surface area, followed by ^99mTc radiolabelling optimization. The optimal ^99mTc radiolabeling conditions resulted in an adsorption capacity of 21.43 ng Re/g t-PSC (8.32 GBq ^99mTc/g t-PSC). After high-energy milling treatment, fines particle fraction (FPF), and median mass aerodynamic diameter (MMAD) of the milled t-PSC were 28.34 ± 0.61%, and 8.31 ± 2.31 μm, respectively. The results imply that ^99mTc-labeled t-PSC has a potential for lung ventilation scan agents with the optimization of milling process to reduce the aerodynamic size within the optimal lung delivery of less than 5 μm.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"218 ","pages":"Article 111689"},"PeriodicalIF":1.6,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143045610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption efficiency correction for 226Ra determination on drinking water using Ra-Nucfilm disc","authors":"Héloïse Gervot ,&nbsp;Christine Germond ,&nbsp;Jérome Loess ,&nbsp;Dominique Saurat","doi":"10.1016/j.apradiso.2025.111690","DOIUrl":"10.1016/j.apradiso.2025.111690","url":null,"abstract":"<div><div>A specific goal of the French army is to ensure health protection of soldiers consuming water from overseas operations territories. To do so, the French Defence Radiological Protection Service developed a method to quantify the amount of ²²⁶Ra in water using Ra-Nucfilm discs. ²²⁶Ra analysis is achieved within less than two days and the detection limit, function of adsorption efficiency, ranges from 0.85 to 25 mBq/L. The novelty is the determination of a factor correcting adsorption efficiency, equal to 1.3, from the difference in adsorption between ²²⁶Ra and ¹³³Ba using as internal tracer.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"218 ","pages":"Article 111690"},"PeriodicalIF":1.6,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143036167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}