Radiation Physics and Chemistry最新文献

{"title":"Best practices for dose rate determination using the μDOSE and μDOSE+ systems","authors":"Konrad Tudyka, Maciej Gosek, Joanna Rocznik, Grzegorz Poręba, Maksymilian Jędrzejowski, Thomas Kolb, Annette Kadereit, Sebastian Kreutzer, Zoran M. Perić","doi":"10.1016/j.radphyschem.2026.114592","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114592","url":null,"abstract":"Accurate dose rate determination is crucial for trapped charge dating (TCD) applications, such as using optically stimulated luminescence (OSL), thermoluminescence (TL), and electron spin resonance (ESR). The μDOSE and μDOSE+ systems provide efficient solutions for this task through simultaneous α and β-counting along with <ce:sup loc=\"pre\">220</ce:sup>Rn/<ce:sup loc=\"pre\">216</ce:sup>Po, <ce:sup loc=\"pre\">219</ce:sup>Rn/<ce:sup loc=\"pre\">215</ce:sup>Po, <ce:sup loc=\"pre\">212</ce:sup>Bi/<ce:sup loc=\"pre\">212</ce:sup>Po and <ce:sup loc=\"pre\">214</ce:sup>Bi/<ce:sup loc=\"pre\">214</ce:sup>Po decay pair detection.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"5 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and performance evaluation of a 2π windowless large-area proportional counter for surface emission rate measurements","authors":"Wan-Tzu Hung, Wei-Han Chu, Teng-hung Tsou, Ming-Chen Yuan, Rong-Jiun Sheu","doi":"10.1016/j.radphyschem.2026.114579","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114579","url":null,"abstract":"An upgraded, custom-built 2π windowless large-area proportional counter demonstrated exceptional operational reliability, thoroughly validated through long-term stability monitoring and national/international intercomparisons. Optimizing the electric field distribution and narrowing the anode wire spacing enhanced spatial uniformity and stabilized net emission rates across all key performance indicators. Through the integration of dynamic flow equilibrium and real-time barometric compensation, continuous tracking confirmed high measurement repeatability within stringent uncertainty limits, yielding highly consistent standard deviations. Furthermore, bilateral evaluations against NPL and PTB standards, alongside multi-year national proficiency tests, successfully substantiated the long-term stability and practical applicability of this upgraded system for surface emission rate measurements in Taiwan.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"16 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding Bond-Selective Damage Mechanisms for Radiation-Tolerant III-V APD Heterointerface Design: A Coupled AIMD-Monte Carlo Study","authors":"Hafiz Ghullam Rasool, Furong Liu, Yinghao Wang, Zulfiqar Ali","doi":"10.1016/j.radphyschem.2026.114590","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114590","url":null,"abstract":"Developing radiation-tolerant InGaAs-based photodetectors is essential for space applications. Displacement damage is often characterized by defect formation and energy-loss metrics, yet the bond-selective atomistic mechanisms linking it to electronic degradation at III-V heterointerfaces remain unclear. This study combines ab initio molecular dynamics with Monte Carlo simulations to investigate radiation damage in the InGaAsP/InGaAs heterointerface. Threshold displacement energies (TDEs) of primary knock-on atoms (PKAs) were determined along [001], [010], [110], and [111] relative to the (001) interface. Cation TDEs on the InGaAs side (In: 14-16 eV; Ga: 10-13 eV) exceed anion TDEs on the InGaAsP side (As and P: 9-12 eV), reflecting longer In-As bonds and resilient Ga-As bonding. Anion PKAs accommodate damage through local distortion and Frenkel-pair formation, whereas cation PKAs redistribute it through antisite exchange and replacement sequences; formation energies span 2.80-7.45 eV. Radial distribution analysis reveals the bond-selective response: In-P reconstruction near the second coordination shell and Ga-As sensitivity to angular deformation, which narrow the band gap and induce band-edge tailing. Nuclear stopping dominates energy loss, and the stepwise increase in projected range (6.2-8.2 Å) between 25 and 75 eV broadens the ring-like damage profiles; correspondingly, the cascade localization index decreases from 0.908 to 0.649, marking a transition from localized bond-level damage to distributed cascade disorder with gap closure at 75 eV. These results rely on PBE-GGA, four directions sampled at single sites, and a 288-atom supercell, and therefore indicate relative trends rather than averaged values. The findings establish a bond-to-cascade mechanism for designing radiation-tolerant III-V APD heterointerfaces.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"13 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Archaeometric Characterisation of Sangam-Period Pottery from Keeladi, Tamil Nadu, India Using XRF and CHNS Analysis","authors":"Gokul Vijay, T. Arun Luiz, R. Sivanantham, Daisy Joseph","doi":"10.1016/j.radphyschem.2026.114591","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114591","url":null,"abstract":"This pilot study reports the elemental composition of pottery sherds from Keeladi, a Sangam-period (6<ce:sup loc=\"post\">th</ce:sup> century BCE) urban settlement on the banks of the Vaigai River in Tamil Nadu, India. Ten sherds, comprising Terracotta, Black-and-Red, Red Slipped and Coarse Red wares, were analysed by X-ray fluorescence (XRF) and carbon, hydrogen, nitrogen and sulphur (CHNS) elemental analysis. The XRF data suggest that potters may have used alluvial clays from the Vaigai River basin, characterised by high concentrations of SiO<ce:inf loc=\"post\">2</ce:inf> (45.3–62.2%), Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> (13.8–15.5%) and Fe<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> (7.9–8.8%). The Principal component analysis (PCA) and hierarchical cluster analysis (HCA; Ward linkage on Z-score standardised data of 22 elements) showed broad agreement. PCA and HCA yielded comparable results. In both analyses, KLD-5 was distinctly separated from other sherds characterised by higher contents of Zr, Nb, Th, and Si. KLD-1 and KLD-6 were found close to each other, while the remaining seven sherds were grouped into one cluster according to HCA. Silhouette analysis identified the three-cluster solution as the best among the solutions tested, with a mean silhouette coefficient of 0.358. However, it can be seen that the coefficient is relatively low, which implies only a moderate degree of separation between clusters. Thus, the results suggest preliminary patterns of compositional similarity rather than strongly defined compositional groups. In the CHNS data, the three Black-and-Red Ware sherds have the highest carbon contents (0.60– 0.69%), consistent with carbon retained under reducing firing conditions. The results provide a compositional baseline for comparing pottery from other Early Historic sites in South Asia and can support future studies of ceramic provenance, distribution and exchange in the region.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"23 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149291225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monte Carlo Evaluation of Scalp Dose in Whole Brain Radiotherapy","authors":"Felipe Beraldo da Cruz, Fernanda Quadros Fuzato, Victor Luiz Ossick Evangelista, Cintia de Almeida Ribeiro, Guenda Meffe, Sara Ramella, Lucio Pereira Neves, Ana Paula Perini","doi":"10.1016/j.radphyschem.2026.114580","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114580","url":null,"abstract":"This study investigated the scalp dose during whole-brain radiotherapy (WBRT) using Monte Carlo simulations. The dose-depth relationship in the scalp was established by modelling structures at different depths derived from the ICRP 145 MRCP skin surface using Blender. Different scalp subdivisions were also defined to provide a more detailed analysis of the dose distribution. The results showed that the most superficial scalp region (0-1 mm) received a mean dose of 11.94 Gy, whereas the hair follicle layer (4-5 mm) received a mean dose of 22.31 Gy, demonstrating a substantial increase in dose with depth. Regional analysis at the follicular depth revealed spatial heterogeneity, with mean doses ranging from 17.35 Gy in the vertex to 31.96 Gy in the occipital region, and an overall mean of 24.82 Gy. Because these region-specific mean doses remained below the 36 Gy threshold for permanent alopecia but uniformly exceeded the 20 Gy threshold for transient hair loss, the occurrence of widespread temporary alopecia is expected. These findings highlight the clinical relevance of evaluating depth-resolved and region-specific dose distributions in the scalp during WBRT.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"10 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monte Carlo sensitivity analysis of a Gedong mango model: Effects of dosimeter placement, density, and sample orientation in a gamma irradiator","authors":"Okky Agassy Firmansyah, Bimo Saputro, Achmad Faturrahman Jundi, Fendinugroho, Ayu Jati Puspitasari, Nunung Nuraeni, Nasyitha Laila Ramadhani, Poki Agung Budiantoro, Budhy Kurniawan","doi":"10.1016/j.radphyschem.2026.114574","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114574","url":null,"abstract":"Monte Carlo (MC) modelling is a useful tool for predicting absorbed-dose distributions in phytosanitary irradiation of heterogeneous agricultural products. In this study, a voxel-based MC model of Indonesian Gedong mango was developed from computed tomography (CT) imaging data and implemented in the PHITS code using the RT-PHITS interface. The model was assessed by comparison with alanine dosimeter measurements in a Type I Gammacell 220 irradiator. At a nominal dose level of 1000 Gy, the MC-calculated dose was 1072.4 Gy, whereas the experimental dose was 1015.0 Gy, corresponding to a relative difference of 5.7%. The alanine measurement had an expanded uncertainty of 4.5% (<ce:italic>k</ce:italic> = 2). Using the PHITS relative standard error to represent the MC uncertainty, the normalized error was (<ce:italic>E</ce:italic><ce:inf loc=\"post\">n</ce:inf> = 0.86), indicating that the simulated and measured doses were compatible within the stated uncertainties. Sensitivity analyses were conducted to evaluate the effects of dosimeter placement, mango orientation, and mango flesh density on the calculated absorbed dose. Dosimeter placement showed direction-dependent sensitivity. For an assumed placement deviation of 0.5 cm, the combined three-dimensional position-induced dose variation was estimated to be 1.6%. Mango orientation produced a relative orientation-induced dose variation of 2.4% at the central scoring position, which was comparable to the MC relative standard error of 2.3%–2.5%. In contrast, density variation showed a relatively small influence on the calculated dose, with a sensitivity coefficient of approximately 0.04 under constant elemental composition. These results indicate that geometrical factors, particularly dosimeter placement and fruit orientation, should be considered when applying CT-based MC models for phytosanitary irradiation. The findings are limited to the investigated configuration of one Gedong mango irradiated in the Gammacell 220 chamber under the specified Co-60 source-loading arrangement and should not be directly extrapolated to other product configurations or irradiation facilities.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"17 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced degradation of acetaminophen in wastewater by integrating ionizing irradiation with Fenton oxidation","authors":"Yuening Song, Yulin Wang, Jianlong Wang","doi":"10.1016/j.radphyschem.2026.114588","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114588","url":null,"abstract":"Acetaminophen (APAP), a widely detected pharmaceutical contaminant, which is difficult to remove by conventional biological wastewater treatment processes. In this study, the degradation of APAP by ionizing irradiation was investigated in a simulated wastewater and an actual industrial wastewater matrix, with particular emphasis on matrix effects and irradiation–Fenton enhancement. In a simulated wastewater, ionizing irradiation was efficient for APAP degradation, with removal efficiency exceeding 87% at an absorbed dose of 5 kGy. The degradation kinetics depended on the initial APAP concentration, as low-concentration systems followed pseudo first-order kinetics, whereas higher concentrations exhibited kinetic deviations caused by competition from transformation products. Although APAP can be efficiently degraded, TOC decrease was much lower, indicating incomplete mineralization. In actual wastewater, APAP degradation was strongly suppressed by background organic and inorganic constituents, as shown by the lower irradiation chemical yield. Coupling ionizing irradiation with Fenton oxidation could enhance APAP degradation, particularly at low absorbed doses, while mineralization was low due to the dissolved organic matter and intermediate products. UV–Vis, EEM fluorescence, and ion chromatography confirmed the destruction of aromatic structures and the formation of low-molecular-weight carboxylic acids. These results showed that ionizing irradiation combined with Fenton oxidation could enhance the degradation of pharmaceutical contaminants, while wastewater matrix effects critically limit the treatment efficiency.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"14 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiation-induced structural modification of ferulic acid in methanol as potent cytokine production inhibitors","authors":"Gyeong Han Jeong, Seungae Kim, Ha-Yeon Song, Jio Ryu, Byung Yeoup Chung, Hyoung-Woo Bai, Tae Hoon Kim","doi":"10.1016/j.radphyschem.2026.114589","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114589","url":null,"abstract":"Ferulic acid, a major simple phenolic compound encountered in the higher plant kingdom, dissolved in methanol was irradiated with 50 kGy of γ rays to generate six new compounds (<ce:bold>2</ce:bold>–<ce:bold>7</ce:bold>) with modifications in the aliphatic region. Structures of the new radiolytic products were elucidated using nuclear magnetic resonance spectroscopy and mass spectrometry. Among the isolated compounds, unusual phenylpropanoid derivatives <ce:bold>4</ce:bold> and <ce:bold>7</ce:bold> exhibited improved inhibitory activity against interleukin (IL)-6 production compared to ferulic acid. Specifically, compound <ce:bold>4</ce:bold> suppressed both IL-6 and tumor necrosis factor (TNF)-α production (<ce:italic>p</ce:italic> &lt; 0.01), while compound <ce:bold>7</ce:bold> increased the production of the anti-inflammatory cytokine IL-10 (<ce:italic>p</ce:italic> &lt; 0.01). These results suggest that reactive intermediates generated by γ radiolysis of methanol contribute to the structural modification of ferulic acid, including hydroxymethylation, hydrogenation, and cyclization, thereby altering its cytokine-modulatory activity.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"23 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structure-dependent degradation kinetics of sulfonamide antibiotics in gamma irradiation/periodate treatment: Reactive species and molecular descriptors","authors":"Bin Yao, Shaobin Wang, Yaoyu Zhou","doi":"10.1016/j.radphyschem.2026.114578","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114578","url":null,"abstract":"Gamma irradiation with periodate (PI) has been shown to enhance the oxidation of organic contaminants, but the molecular factors governing the reactivity of structurally related antibiotics in this system remain unclear. Herein, nine commonly detected sulfonamide antibiotics (SAs) were selected as model compounds to investigate their structure-dependent degradation kinetics by gamma irradiation/periodate (gamma/PI) treatment. Reactive intermediates, molecular descriptors, transformation pathways, iodine species evolution, and water matrix effects were systematically investigated. The addition of PI markedly accelerated SAs degradation compared with gamma irradiation alone (gamma) and gamma irradiation combined with H<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">2</ce:inf> (gamma/H<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">2</ce:inf>) or persulfate (gamma/PS). For sulfadiazine (SDZ), one representative SA, the observed rate constant in the gamma/PI system was 3.47, 2.09, and 2.01 times higher than those in the gamma alone, gamma/H<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">2</ce:inf>, and gamma/persulfate (PS) systems, respectively. Reactive species analysis suggested the involvement of multiple intermediates, including •OH, O<ce:inf loc=\"post\">2</ce:inf><ce:sup loc=\"post\">•–</ce:sup>, O(<ce:sup loc=\"pre\">3</ce:sup>P), and <ce:sup loc=\"pre\">1</ce:sup>O<ce:inf loc=\"post\">2</ce:inf>, and <ce:sup loc=\"pre\">1</ce:sup>O<ce:inf loc=\"post\">2</ce:inf> was the predominant species. The degradation rates varied substantially among the nine SAs, indicating structure-dependent reactivity. Among the examined molecular descriptors, log <ce:italic>K</ce:italic><ce:inf loc=\"post\">ow</ce:inf> showed the strongest correlation with log <ce:italic>k</ce:italic><ce:inf loc=\"post\">obs</ce:inf> (<ce:italic>R</ce:italic><ce:sup loc=\"post\">2</ce:sup>=0.87), suggesting that molecular hydrophobicity contributed to the kinetic differences among SAs in gamma/PI system, more hydrophobic SAs were degraded faster within this structurally related compound group. Degradation pathways of pollutants and transformed iodine species were elucidated. IO<ce:inf loc=\"post\">3</ce:inf><ce:sup loc=\"post\">-</ce:sup> was the sole iodine species formed during reaction. Furthermore, the gamma/periodate system also maintained SDZ degradation capacity in representative water matrices and showed reactivity toward several structurally different micropollutants. These findings demonstrate that gamma/PI treatment can efficiently degrade SAs and that molecular hydrophobicity is useful for comparing their relative degradation rates in antibiotic-contaminated water treatment.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"21 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of gamma ray and electron beam irradiation on LDPE-based active films containing α-tocopherol","authors":"I. Improta, F. Tescione, M. Stanzione, M. Lavorgna, A. Baidak, W. Pasanphan, E. Orlo, G.G. Buonocore","doi":"10.1016/j.radphyschem.2026.114571","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.114571","url":null,"abstract":"This study investigates the combined effect of α-tocopherol (Toc) incorporation and exposure to ionising radiation on the physicochemical and functional performance of low-density polyethylene (LDPE) films designed for sustainable food packaging applications. Active films were fabricated by melt mixing and cast extrusion of LDPE with 0.5 and 1.0 wt% loading of Toc, followed by exposure to Co-60 gamma ray (γ) and electron beam (e-beam) irradiation at doses of 5, 10, and 25 kGy. FT-IR spectroscopy confirmed the successful incorporation of Toc into the polymer matrix and showed no detectable degradation of the antioxidant or the LDPE backbone upon irradiation. Water vapour permeability (WVP) measurements revealed a dual effect: Toc increased water permeability in unirradiated films due to its plasticizing effect; while γ-ray and e-beam irradiation significantly decreased WVP suggesting the formation of radiation-induced crosslinked network that enhances moisture barrier performance.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"13 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149290777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}