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Study of archaeological ceramics from the north coast of Peru by EDXRF and exploratory multivariate analysis 通过电离辐射X射线荧光光谱和探索性多元分析研究秘鲁北海岸的考古陶瓷。
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-10-05 DOI: 10.1016/j.apradiso.2024.111541
C.S.A. Desanti , C.R. Appoloni , R.A. Ikeoka , M.M.A. Suñer , M. Fagundes , F.A. Silva
{"title":"Study of archaeological ceramics from the north coast of Peru by EDXRF and exploratory multivariate analysis","authors":"C.S.A. Desanti ,&nbsp;C.R. Appoloni ,&nbsp;R.A. Ikeoka ,&nbsp;M.M.A. Suñer ,&nbsp;M. Fagundes ,&nbsp;F.A. Silva","doi":"10.1016/j.apradiso.2024.111541","DOIUrl":"10.1016/j.apradiso.2024.111541","url":null,"abstract":"<div><div>This article presents the first results for elemental composition of 193 fragments ceramic from four sites located in Ventarrón-Collud archaeological complex, Peru. The results from EDXRF and multivariate analysis indicated statistical similarity among four groups of ceramic fragments, selected by remarkable stylistic variation, collected from different archaeological space/time contexts. The correspondence in the elemental composition of the ceramic paste of the artifacts corroborates the hypothesis that similar raw materials were used consistently throughout the entire occupation of this archaeological complex.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111541"},"PeriodicalIF":1.6,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142387486","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}
引用次数: 0
Investigation of thermal, acoustic, mechanical, and radiation shielding performance of waste and natural fibers 研究废纤维和天然纤维的热屏蔽、声屏蔽、机械屏蔽和辐射屏蔽性能。
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-10-04 DOI: 10.1016/j.apradiso.2024.111539
Yusuf Kavun , Mustafa Eken
{"title":"Investigation of thermal, acoustic, mechanical, and radiation shielding performance of waste and natural fibers","authors":"Yusuf Kavun ,&nbsp;Mustafa Eken","doi":"10.1016/j.apradiso.2024.111539","DOIUrl":"10.1016/j.apradiso.2024.111539","url":null,"abstract":"<div><div>It is crucial to address two pressing global issues, energy shortage and environmental pollution, when producing building insulation materials. Using waste and natural fiber groups can be part of the solution. The insulation material was produced using pumpkin fiber, chicken fiber, cotton waste, vermiculite, and epoxy as binders. The samples were tested for thermal conductivity coefficient, ultrasonic sound transmission rate, density, water absorption rate, compressive and bending strength, and fire resistance at temperatures of 75, 100, 125, and 150C. The samples produced using natural and waste materials yielded a thermal conductivity value of 0.041 W/mK, an ultrasonic sound transmission speed of 0.25 km/s, a compressive strength value of 1.57 MPa, and bending strength values of 0.91 MPa. It has been clearly demonstrated that, with its low volume loss, it can serve as an alternative to the EPS-XPS types available in the market. Furthermore, the linear attenuation coefficients (LAC) were examined to obtain radiation shielding properties of the samples at 1173 and 133 keV energies using a 60Co gamma source. Also, LAC values determined between 0,1167 ± 0,0452 cm<sup>−1</sup>-0,2315 ± 0,0065 cm<sup>−1</sup> for 1173 keV and 0,1042 ± 0,0488 cm<sup>−1</sup> - 0,2141 ± 0,0062 cm<sup>−1</sup> for 1333 keV. Accordingly, it has been revealed that waste compositions are effective in protecting against radiation.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111539"},"PeriodicalIF":1.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142387485","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}
引用次数: 0
Dosimetric evaluation of Rhizophora spp. particleboard bonded with animal protein adhesive at X-ray energies below 100 kVp 在低于 100 kVp 的 X 射线能量下对使用动物蛋白粘合剂粘合的 Rhizophora spp.
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-10-02 DOI: 10.1016/j.apradiso.2024.111538
Ehsan Taghizadeh Tousi , Hamid Reza Sadeghi
{"title":"Dosimetric evaluation of Rhizophora spp. particleboard bonded with animal protein adhesive at X-ray energies below 100 kVp","authors":"Ehsan Taghizadeh Tousi ,&nbsp;Hamid Reza Sadeghi","doi":"10.1016/j.apradiso.2024.111538","DOIUrl":"10.1016/j.apradiso.2024.111538","url":null,"abstract":"<div><div>This research developed a bio-based adhesive (AP) derived from industrial slaughterhouse waste, comprising over 85% protein. The adhesive was characterized by a melting point of 193.14 °C, a neutral pH of 7, and a viscosity comparable to common wood adhesives such as urea-formaldehyde and phenol-formaldehyde. Utilizing this adhesive, a <em>Rhizophora</em> spp. particleboard phantom was produced, featuring wood particles of ≤149 μm, an adhesive concentration of 12%, and a target density of 1 g/cm³, adhering to a standard phantom dimension of 30 cm × 30 cm × 30 cm. The dosimetric properties of this particleboard phantom were subsequently compared with those of water and Perspex phantoms within an X-ray energy range of 60–100 kVp, employing high-sensitivity thermo-luminescent dosimeters (TL–100H). The findings indicated that the percentage depth dose (PDD) values of the AP-<em>Rhizophora</em> spp. particleboard were closely aligned with those of the Perspex and water phantoms, with the greatest discrepancy observed at 60 kVp. Additionally, the half-value layer (HVL) of the particleboard was similar to those of Perspex and water, particularly at diagnostic X-ray energies. These results demonstrate that the AP adhesive is effective for creating <em>Rhizophora</em> spp. particleboard phantoms, exhibiting dosimetric properties comparable to tissue-equivalent materials.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111538"},"PeriodicalIF":1.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142444976","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}
引用次数: 0
Development of a TDCR counting system with anti-coincidence detectors 开发带有反重合探测器的 TDCR 计数系统
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-10-01 DOI: 10.1016/j.apradiso.2024.111537
Yifan Tian , Weihua Zeng , Haoran Liu , Juncheng Liang , Zihao Fan , Qianqian Zhou , Zhijie Yang , Qisheng Zhang , Shengli Hou
{"title":"Development of a TDCR counting system with anti-coincidence detectors","authors":"Yifan Tian ,&nbsp;Weihua Zeng ,&nbsp;Haoran Liu ,&nbsp;Juncheng Liang ,&nbsp;Zihao Fan ,&nbsp;Qianqian Zhou ,&nbsp;Zhijie Yang ,&nbsp;Qisheng Zhang ,&nbsp;Shengli Hou","doi":"10.1016/j.apradiso.2024.111537","DOIUrl":"10.1016/j.apradiso.2024.111537","url":null,"abstract":"<div><div>When employing the TDCR method for standardization of low-activity liquid scintillation samples, fluctuations in system background can significantly impact both measurement uncertainties and minimum detectable activity (MDA). To mitigate this impact, a TDCR counting system with anti-coincidence detectors was developed. By analyzing the time difference distribution spectrum between the anti-coincidence channel and β channel, optimal parameters for the anti-coincidence module are determined. The objective of the study is to enhance the effectiveness of the anti-coincidence technique while minimizing the removal of real events. Finally, two sets of <sup>3</sup>H and <sup>14</sup>C samples with known activities of around 1 Bq are prepared via dilution to validate the performance of the system. Compared to without anti-coincidence, the background has been reduced by nearly 84%, leading to decreased fluctuations in the activity results.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111537"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438304","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}
引用次数: 0
Independent isomeric yield ratios of fission products in the epi-cadmium neutron induced fission of 235U 235U 外镉中子诱发裂变中裂变产物的独立异构产率。
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-10-01 DOI: 10.1016/j.apradiso.2024.111536
H. Naik , R.J. Singh , S.P. Dange , W. Jang
{"title":"Independent isomeric yield ratios of fission products in the epi-cadmium neutron induced fission of 235U","authors":"H. Naik ,&nbsp;R.J. Singh ,&nbsp;S.P. Dange ,&nbsp;W. Jang","doi":"10.1016/j.apradiso.2024.111536","DOIUrl":"10.1016/j.apradiso.2024.111536","url":null,"abstract":"<div><div>In the epi-cadmium neutron induced fission of <sup>235</sup>U, independent isomeric yield ratios (IR) of fission products <sup>130,132</sup>Sb, <sup>131,133</sup>Te, <sup>134,136</sup>I, <sup>135</sup>Xe and <sup>138</sup>Cs have been measured by using an off-line gamma-ray spectrometric technique. The average neutron energy of the epi-cadmium reactor neutron spectrum is 1.9 MeV. From the IR values, the root mean square fragment angular momenta (<em>J</em><sub><em>RMS</em></sub>) were deduced by using spin dependent statistical model analysis. The IR and J<sub>RMS</sub> values of considered fission products in the epi-cadmium neutron induced fission of <sup>235</sup>U were compared with the literature data in the thermal neutron induced fission of <sup>235</sup>U to examine the influence of excitation energy on nuclear structure effect.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111536"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142374989","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}
引用次数: 0
Measurement of fast neutron induced (n,γ) reaction cross-section of 68Zn, 96Zr, 121Sb and 123Sb in the energy range of 1 to 2 MeV 测量 68Zn、96Zr、121Sb 和 123Sb 在 1 至 2 MeV 能量范围内的快中子诱导 (n,γ) 反应截面。
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-09-28 DOI: 10.1016/j.apradiso.2024.111535
N.S. Tawade , S. Kumar , S. Patra , R. Tripathi , C.S. Datrik , P.K. Pujari , R.G. Thomas , G. Mishra , A. Kumar , S. De , H. Kumawat
{"title":"Measurement of fast neutron induced (n,γ) reaction cross-section of 68Zn, 96Zr, 121Sb and 123Sb in the energy range of 1 to 2 MeV","authors":"N.S. Tawade ,&nbsp;S. Kumar ,&nbsp;S. Patra ,&nbsp;R. Tripathi ,&nbsp;C.S. Datrik ,&nbsp;P.K. Pujari ,&nbsp;R.G. Thomas ,&nbsp;G. Mishra ,&nbsp;A. Kumar ,&nbsp;S. De ,&nbsp;H. Kumawat","doi":"10.1016/j.apradiso.2024.111535","DOIUrl":"10.1016/j.apradiso.2024.111535","url":null,"abstract":"<div><div>The (n,γ) reaction cross-section for the elements <sup>68</sup>Zn, <sup>96</sup>Zr, <sup>121</sup>Sb and <sup>123</sup>Sb, present in the reactor structural/shielding materials, was measured by neutron activation technique in the neutron energy region of 1–2 MeV as very limited data is available in this energy range. Further, the neutron spectrum peaks in this energy region for the fast breeder reactors and proposed accelerator driven sub-critical systems. The natural strontium (<sup>nat</sup>Sr) element was used as a neutron flux monitor by considering effective combined reaction cross-section for <sup>86</sup>Sr(n,γ)<sup>87</sup>Sr<sup>m</sup> and <sup>87</sup>Sr(n,n′)<sup>87</sup>Sr<sup>m</sup> reactions. The pellets of mixture of sample and monitor were irradiated by a quasi-mono energetic fast neutron beam, generated by <sup>7</sup>Li(p,n)<sup>7</sup>Be reaction at FOTIA, Bhabha Atomic Research Centre, Mumbai, India. The activity of activation products was measured by off-line gamma-ray spectrometry using High Purity Germanium Detector (HPGe). The present data with improved uncertainty and covariance analysis enhance the cross-section data base for better constraining the evaluated data and theoretical models. The theoretical (n,γ) reaction cross-sections were calculated using TALYS 1.96, which could reasonably explain the present data with the Fermi gas level density prescription.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111535"},"PeriodicalIF":1.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142364178","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}
引用次数: 0
A study on the interaction parameters of charged and uncharged radiation types with some indoor plants 带电和不带电辐射类型与一些室内植物相互作用参数的研究。
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-09-26 DOI: 10.1016/j.apradiso.2024.111534
Ahmet Caf , Ferdi Akman , Hasan Oğul , Mustafa Recep Kaçal
{"title":"A study on the interaction parameters of charged and uncharged radiation types with some indoor plants","authors":"Ahmet Caf ,&nbsp;Ferdi Akman ,&nbsp;Hasan Oğul ,&nbsp;Mustafa Recep Kaçal","doi":"10.1016/j.apradiso.2024.111534","DOIUrl":"10.1016/j.apradiso.2024.111534","url":null,"abstract":"<div><div>This study investigates how gamma rays, neutrons, and electrons interact with five commonly found indoor plants: <em>Spathiphyllum wallisii</em> (SW), <em>Ficus elastica</em> (FE), <em>Dieffenbachia camilla</em> (DC), <em>Schefflera arboricola</em> (SA), and <em>Ficus benjamina</em> (FB). Utilizing experimental measurements (with HPGe detector), Monte Carlo simulations (GEANT4 and FLUKA), and theoretical calculations (ESTAR and WinXCOM), some radiation interaction parameters for gamma rays, fast neutrons, thermal neutrons, and electrons were determined. Secondary particle generation was also analyzed to provide a comprehensive assessment. The determined linear attenuation coefficients with the help of the WinXCOM are 0.1376, 0.1662, 0.1385, 0.1651 and 0.1698 cm<sup>−1</sup> for SW, FE, DC, SA and FB, respectively. The calculated total macroscopic cross sections for indoor plants in the same sample order are 2.0290, 2.0350, 2.0285, 2.0363 and 2.0362 cm<sup>−1</sup>. Among the investigated plants, FB exhibited the highest gamma ray interaction, while SA and FB showed superior interaction against fast neutrons compared to SW and DC. The findings reveal significant variations in interaction effectiveness and secondary radiation production across these plants, offering valuable insights for radiation safety and environmental health evaluations.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111534"},"PeriodicalIF":1.6,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339953","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}
引用次数: 0
High temperature photoluminescence dependence and energy migration of Tb3+-Incorporated K3Y(BO2)6 phosphors 掺杂 Tb3+ 的 K3Y(BO2)6 荧光的高温光致发光依赖性和能量迁移
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-09-25 DOI: 10.1016/j.apradiso.2024.111529
G. Souadi , O. Hakami , U.H. Kaynar , M.B. Coban , H. Aydin , O. Madkhali , T. Zelai , M. Ayvacikli , N. Can
{"title":"High temperature photoluminescence dependence and energy migration of Tb3+-Incorporated K3Y(BO2)6 phosphors","authors":"G. Souadi ,&nbsp;O. Hakami ,&nbsp;U.H. Kaynar ,&nbsp;M.B. Coban ,&nbsp;H. Aydin ,&nbsp;O. Madkhali ,&nbsp;T. Zelai ,&nbsp;M. Ayvacikli ,&nbsp;N. Can","doi":"10.1016/j.apradiso.2024.111529","DOIUrl":"10.1016/j.apradiso.2024.111529","url":null,"abstract":"<div><div>This study investigates the structural and photoluminescence (PL) characteristics of Tb<sup>3+</sup>-incorporated K<sub>3</sub>Y(BO<sub>2</sub>)<sub>6</sub> (KYBO) phosphors synthesized via a microwave-assisted sol-gel technique. X-ray diffraction (XRD) and Rietveld refinement confirmed the formation of a pure hexagonal phase, with lattice expansion due to Tb³⁺ doping. PL studies revealed strong green emissions centered at 541 nm, attributed to the ⁵D₄ → ⁷F₅ transitions of Tb³⁺ ions, with the highest intensity observed at 5 wt% Tb³⁺. A decrease in emission was observed at higher concentrations due to concentration quenching. Temperature-dependent PL measurements revealed reverse thermal quenching enhancing PL intensity. Chromaticity analysis based on CIE 1931 coordinates showed stable green emission across all concentrations, with a maximum color purity of 89.74% observed for the KYBO:3 wt% Tb³⁺ sample. The results, along with reverse thermal quenching behavior observed between 470K and 550K, suggest that these phosphors exhibit excellent potential for lighting and display technologies.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111529"},"PeriodicalIF":1.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142323798","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}
引用次数: 0
The production and separation of 161Tb with high specific activity at the University of Utah 犹他大学生产和分离高比活度的 161Tb。
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-09-25 DOI: 10.1016/j.apradiso.2024.111530
Connor K. Holiski , Aidan A. Bender , Peñafrancia F. Monte , Heather M. Hennkens , Mary F. Embree , Meng-Jen (Vince) Wang , Glenn E. Sjoden , Tara Mastren
{"title":"The production and separation of 161Tb with high specific activity at the University of Utah","authors":"Connor K. Holiski ,&nbsp;Aidan A. Bender ,&nbsp;Peñafrancia F. Monte ,&nbsp;Heather M. Hennkens ,&nbsp;Mary F. Embree ,&nbsp;Meng-Jen (Vince) Wang ,&nbsp;Glenn E. Sjoden ,&nbsp;Tara Mastren","doi":"10.1016/j.apradiso.2024.111530","DOIUrl":"10.1016/j.apradiso.2024.111530","url":null,"abstract":"<div><div>Targeted radiotherapy (TRT) is an increasingly prominent area of research in nuclear medicine, particularly in the context of treating cancerous tumors. One radionuclide of considerable interest for TRT is terbium-161 (t<sub>1/2</sub> = 6.95 days), which undergoes beta emission and shares similar decay properties as <sup>177</sup>Lu (FDA-approved as LUTATHERA® and PLUVICTO®). Besides beta emission, <sup>161</sup>Tb also emits a significant number of conversion and Auger electrons further enhancing its therapeutic potential. Terbium-161 can be produced using nuclear reactors through an indirect neutron capture reaction, <span><math><mmultiscripts><mi>G</mi><mprescripts></mprescripts><mn>64</mn><mn>160</mn></mmultiscripts><mi>d</mi><mfenced><mrow><mi>n</mi><mo>,</mo><mi>γ</mi></mrow></mfenced><mmultiscripts><mi>G</mi><mprescripts></mprescripts><mn>64</mn><mn>161</mn></mmultiscripts><mi>d</mi><mo>→</mo><mfenced><mrow><mn>3.66</mn><mspace></mspace><mi>min</mi><mo>,</mo><msup><mi>β</mi><mo>−</mo></msup></mrow></mfenced><mmultiscripts><mi>T</mi><mprescripts></mprescripts><mn>65</mn><mn>161</mn></mmultiscripts><mi>b</mi></math></span>, from <sup>160</sup>Gd targets. However, a key challenge in utilizing <sup>161</sup>Tb for TRT lies in effectively separating target and product materials to attain high specific activity for radiolabeling. Here, we detail the production of no-carrier added <sup>161</sup>Tb using low flux research reactors (mean thermal (&lt;0.625 eV) neutron flux: <span><math><mrow><mn>1.356</mn><mo>×</mo><msup><mn>10</mn><mn>12</mn></msup><mspace></mspace><mi>n</mi><mo>∙</mo><msup><mtext>cm</mtext><mrow><mo>−</mo><mn>2</mn></mrow></msup><mo>∙</mo><msup><mi>s</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></math></span>) like the University of Utah TRIGA Reactor, using enriched <sup>160</sup>Gd<sub>2</sub>O<sub>3</sub> targets (1.5 ± 0.3 μCi of <sup>161</sup>Tb per mg of <sup>160</sup>Gd target per hour of irradiation). We also developed a separation technique based on cation exchange and extraction chromatography, suitable for mCi level irradiations with targets exceeding 200 mg. In a simulated full-scale irradiation, <sup>161</sup>Tb was successfully isolated from large mass targets using cation exchange (AG 50W-X8, with 2-hydroxyisobutyric acid at 70 mM, pH 4.75) and extraction chromatography (LN Resin, 0.5–0.75 M HNO<sub>3</sub>) methods. This resulted in high apparent molar activities of [<sup>161</sup>Tb]Tb-DOTA (113 ± 3 MBq/nmol), demonstrating high purity <sup>161</sup>Tb relevant for potential future preclinical applications.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"214 ","pages":"Article 111530"},"PeriodicalIF":1.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339954","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}
引用次数: 0
Assessment of secondary cancer risks within non-target organs during proton therapy for lung cancer: A Monte Carlo study 评估质子治疗肺癌期间非靶器官内的继发性癌症风险:蒙特卡洛研究
IF 1.6 3区 工程技术
Applied Radiation and Isotopes Pub Date : 2024-09-25 DOI: 10.1016/j.apradiso.2024.111532
Sayyed Bijan Jia , Reza Shamsabadi , Leili Mogheiseh , Hamid Reza Baghani
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