Radiation Physics and Chemistry最新文献

{"title":"Experimental proof of concept of Positron Annihilation Interaction-Transmission Imaging (PAITI) system","authors":"Rasool Safari ,&nbsp;Reza Faghihi ,&nbsp;Mohammadreza Parishan ,&nbsp;Zahra Rakeb","doi":"10.1016/j.radphyschem.2025.113041","DOIUrl":"10.1016/j.radphyschem.2025.113041","url":null,"abstract":"<div><div>A novel low-dose multi-parameter imaging system, Positron Annihilation Interaction-Transmission Imaging (PAITI), has recently been introduced through theoretical analysis and simulation studies. PAITI not only provides efficiency maps of the detectors but also extracts about ten 2D maps of the investigated medium. Noteworthy among these maps are absolute representations of the number of accrued interactions, deposited energy, attenuation coefficient, and electron density.</div><div>In this study, we conducted a simple yet robust experimental proof of concept for PAITI, utilizing two single-pixel scintillation detectors, two single-channel analyzers, a delay amplifier, and a coincidence-anticoincidence circuit. Plexiglass, Aluminium, and Iron were chosen as representative mediums. The average percentage errors for determining detector efficiencies, accrued interactions, deposited energies, attenuation values, and electron densities were 5.7 %, 4.4 %, 3.9 %, 5.8 %, and 6.9 %, respectively.</div><div>This experimental validation underscores the potential of an advanced form of PAITI for future applications in diverse fields, such as medical imaging, ion-range prediction in ion therapy, and bone densitometry.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113041"},"PeriodicalIF":2.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242441","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 X-ray irradiation on the optical properties of K2Ni(SO4)2(H2O)6 single crystal grown by slow evaporation method","authors":"A.M. Abdulwahab ,&nbsp;A. Abu El-Fadl","doi":"10.1016/j.radphyschem.2025.113052","DOIUrl":"10.1016/j.radphyschem.2025.113052","url":null,"abstract":"<div><div>The compound potassium nickel sulfate hexahydrate which has the chemical formula K₂Ni(SO₄)₂(H₂O)₆ and is abbreviated as KNISH, was synthesized as an aqueous solution. An indigenous crystal growth apparatus was used to grow single crystal of KNISH by the slow evaporation of the supersaturated aqueous solution. The crystal was irradiated with several doses of X-ray from 0.4 to 2.4 kGy with dose rate of 16 Gy/min and the effect of irradiation on the optical properties was studied for the first time. X-ray irradiation changed the optical transmittance of KNISH crystal especially the band in the ultraviolet region. The band width decreased, its intensity decreased, and the corresponding wavelength increased with increasing the irradiation dose. The irradiation did not affect the efficiency of KNISH crystal for using as an ultraviolet light filter and sensor in solar-blind applications. X-ray irradiation increased absorption coefficient in photon energies range more than 4 eV. The optical energy gap of unirradiated KNISH crystal was 6.44 eV and it decreased to 6.11 eV with increasing the irradiation dose to 2.4 kGy. Urbach energy of unirradiated KNISH crystal was 0.22 eV. It decreased to 0.09 eV with low irradiation doses (0–1.6 kGy) and then it increased to 0.24 eV with high irradiation doses (1.6–2.4 kGy).</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113052"},"PeriodicalIF":2.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242734","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":"Impact of Fluoride modifiers on Sm3+ ions doped Phospho-Borate glasses for radiation shielding applications","authors":"A. Indhrapriyadarshini ,&nbsp;K.A. Naseer ,&nbsp;K.A. Mahmoud ,&nbsp;M.K. Komal Poojha ,&nbsp;Mohammed S. Alqahtani ,&nbsp;K. Marimuthu","doi":"10.1016/j.radphyschem.2025.113057","DOIUrl":"10.1016/j.radphyschem.2025.113057","url":null,"abstract":"<div><div>The conservative melt quenching method has been applied to fabricate a set of glass samples with the composition 49P₂O₅+25B₂O₃+10 KF+15XF+1Sm₂O₃, where X is replaced by the metals Mg, Sr, Li, Zn and Ba. The prepared glass samples are named as PBKSm:X. The pattern of XRD affirms the presence of a non-crystalline nature, and the FTIR identifies the existence of various stretching of all the functional groups in the present glasses. The density (3.221 g/cm³) and bond density (10.5 <span><math><mrow><mo>×</mo></mrow></math></span> 10²⁸ m⁻³) of the PBKSm:BaF glass exhibit greater values, which implies the compactness and high mechanical strength. The <span><math><mrow><msub><mi>d</mi><mrow><mi>B</mi><mo>−</mo><mi>B</mi></mrow></msub></mrow></math></span> and <span><math><mrow><msub><mi>d</mi><mrow><mi>P</mi><mo>−</mo><mi>P</mi></mrow></msub></mrow></math></span> found to be increased when the element with the highest ionic radius (Ba) is introduced. The least elastic modulus values of the PBKSm:BaF glass sample exhibit the fact that the replacement of BaF inhibits the deformation ratio. The Monte Carlo simulation method was used to evaluate the shielding capability of the glasses. The study found that the linear attenuation coefficient of the prepared glasses the varied throughout the 15.868–0.362 cm⁻¹ (for the PBKSm:LiF glass), 17.091–0.374 cm⁻¹ (for the PBKSm:MgF glass), 38.906–0.434 cm⁻¹ (for the PBKSm:ZnF glass), 24.477–0.491 cm⁻¹ (for the PBKSm:SrF glass), and 43.674–0.713 cm⁻¹ (for the PBKSm:BaF glass) when the γ-ray energy raised throughout 0.015 MeV and 1.5 MeV, respectively. The shielding parameter values suggest that, compared to other glasses, BaF- incorporated glass consistently exhibits improved shielding efficiency.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113057"},"PeriodicalIF":2.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253549","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":"Novel PENELOPE geometry subroutine for patient-Specific dosimetry in the presence of electromagnetic fields","authors":"A. Gayol ,&nbsp;F. Malano ,&nbsp;I. Scarinci ,&nbsp;P. Pérez ,&nbsp;M. Valente","doi":"10.1016/j.radphyschem.2025.113027","DOIUrl":"10.1016/j.radphyschem.2025.113027","url":null,"abstract":"<div><div>Technological advancements have enabled the integration of magnetic resonance imaging with linear accelerators, introducing new dosimetry challenges arising from strong magnetic fields within the ionizing radiation field. Notwithstanding the traditional pengeom subroutine, distributed with the PENELOPE package, adequately tracks particles in the presence of external electromagnetic fields, it is limited to geometries defined by quadric surfaces. Conversely, established developments such as PenEasy, which handle voxelized geometries within the PENELOPE main code, are constrained in performing particle tracking with external electromagnetic fields. In response, the here introduced voxgeom emerges as an innovative geometry subroutine tailored to track particles within voxelized regions seamlessly integrated with the PENELOPE main code, even when accounting for external electromagnetic fields. <em>Voxgeom</em> considers each voxel of the geometry as a body in a 3D arrangement, whereas interfaces are treated completely analogue to the pengeom subroutine. Furthermore, allows the use of patient-specific information to establish a univocal relationship between each body and material files, and integrates the models provided by the PENELOPE package for simulating electron/positron transport with external EM fields. Successful performance is obtained comparing voxgeom with the well-validated pengeom geometry manager both in absence and in presence of external strong magnetic fields. Differences up to 2 % and 1 % are reported between both subroutines, for the homogeneous and inhomogeneous phantom with magnetic field, respectively. Moreover, parameters such as percentage depth dose at depth of maximum dose, 10, and 20 cm are indistinguishable. Finally, promising dosimetry outputs are obtained using voxgeom to characterize dosimetry effects due to the presence of magnetic fields as happens in the Elekta Unity MR-LINAC in a representative patient-specific clinical case.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113027"},"PeriodicalIF":2.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297851","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":"Scintillation properties of cerium-doped Tl2LaCl5 Crystal: Investigating the effects of size and cerium concentration","authors":"Lam Tan Truc ,&nbsp;Nguyen Thanh Luan ,&nbsp;Arshad Khan ,&nbsp;Gul Rooh ,&nbsp;D.W. Jeong ,&nbsp;J. Kaewkhao ,&nbsp;H.J. Kim ,&nbsp;S. Kothan","doi":"10.1016/j.radphyschem.2025.113059","DOIUrl":"10.1016/j.radphyschem.2025.113059","url":null,"abstract":"<div><div>The cerium-doped Tl₂LaCl₅ (TLC: Ce³⁺) scintillator has emerged as a highly promising material for radiation detection applications such as positron emission tomography (PET), owing to its high effective atomic number (Z_eff) density and excellent scintillation properties. In this study, we grew a large-sized TLC crystal with a diameter of approximately 1 inch; however, the resulting crystal exhibited some cracks. Comprehensive characterization reveals stable light outputs and energy resolutions across different crystal sizes with only a negligible variation observed in large size crystals. In addition, faster decay and rise times are observed with higher cerium concentrations, achieving a significant decay time reduction to 31 ns with 20 % Ce doping, comparable with commercial scintillators such as LaBr₃: Ce³⁺. These findings underscore the potential of TLC: Ce³⁺ as a scalable and high-performance scintillator, suitable for advanced time-of-flight PET applications, despite the challenge posed by its hygroscopic nature for large-scale manufacturing.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113059"},"PeriodicalIF":2.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272503","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":"Cost-effective pediatric head phantom for computed tomography dosimetry and its evaluation using pencil ion chamber and OSLD","authors":"A. Khallouqi ,&nbsp;H. sekkat ,&nbsp;A. Halimi ,&nbsp;O. El rhazouani","doi":"10.1016/j.radphyschem.2025.113040","DOIUrl":"10.1016/j.radphyschem.2025.113040","url":null,"abstract":"<div><div>This study presents a compelling comparison of computed tomography dose index (CTDI) values obtained using innovative epoxy resin phantoms versus traditional PMMA phantoms, highlighting the potential for cost-effective solutions in pediatric radiology. CTDI measurements were conducted across various tube voltages using both phantom types, employing ion chamber detectors and optically stimulated luminescent dosimeters (OSLDs). Remarkably, the dosimetry behavior of both phantoms was found to be comparable at all tested voltages. As expected, CTDI values decreased with lower kVp settings for all configurations. Notably, the differences in CTDI100 between the two phantom materials remained under 5 % across all voltage settings and positions, comfortably within the acceptable ranges established by the American Association of Physicists in Medicine (AAPM). The findings reveal that the economical epoxy resin phantom not only serves as a feasible alternative for assessing radiation dosage in pediatric CT imaging but also demonstrates measurement capabilities akin to those of more expensive commercial phantoms.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113040"},"PeriodicalIF":2.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144221717","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":"Prompt gamma-rays induced in Methamphetamine, Fentanyl, Cocaine, and Heroin due to neutrons produced by 252Cf and a DT nuclear reaction","authors":"H.R. Vega-Carrillo ,&nbsp;C.A. Marquez-Mata ,&nbsp;C.O. Torres-Cortes ,&nbsp;A. Baltazar-Raigosa ,&nbsp;L.E. Cevallos-Robalino ,&nbsp;G.F. Garcia-Fernandez ,&nbsp;S.A. Al-Shelkamy ,&nbsp;Marcial Vasquez-Arteaga","doi":"10.1016/j.radphyschem.2025.113038","DOIUrl":"10.1016/j.radphyschem.2025.113038","url":null,"abstract":"<div><div>Prompt gamma rays neutron activation analysis is an analytical technique useful to detect compounds made with low atomic number elements, like narcotics. In this work, Monte Carlo methods were used to estimate the gamma-ray spectra produced when ²⁵²Cf and DT (14.1 MeV) neutrons interact with 12.70 and 20.32 cm-diameter spheres made with methamphetamines, heroin, cocaine and fentanyl. Pulse height spectra show 2.22, 4.44, 5.11, and 6.13 MeV photopeaks induced in ¹H, ¹²C, ¹⁴N, and ¹⁶O. Narcotics are compounds with H, C, N, and O, and the area under the induced gamma rays ¹Hγ (2.22 MeV), ¹²Cγ (4.44 MeV), ¹⁴Nγ (5.11 MeV) and ¹⁶Oγ (6.13 MeV) were calculated. The ¹Hγ/¹²Cγ, ¹Hγ/¹⁴Nγ, ¹²Cγ/¹⁴Nγ, ¹Hγ/¹⁶Oγ and ¹²Cγ/¹⁶Oγ gamma-ray ratios were calculated aiming to distinguish the narcotic. In addition, the linear attenuation coefficients, the effective atomic numbers, and the macroscopic fast neutron removal cross section were calculated. In the interaction between ²⁵²Cf neutrons with the 12.70 cm-diameter narcotic sphere the largest ¹²Cγ/¹⁴Nγ ratio is noticed with cocaine (2.650); the largest ¹Hγ/¹²Cγ ratio is with heroin (16.409), while the largest ¹Hγ/¹⁴Nγ ratio is with fentanyl (33.587). In the interaction between ²⁵²Cf neutrons with the 20.32 cm-diameter narcotic sphere the largest ¹²Cγ/¹⁴Nγ, ¹Hγ/¹²Cγ, and ¹Hγ/¹⁴Nγ ratios are with methamphetamine (2.833, 26.971, and 76.418 respectively). In the interaction between DT neutrons with the 12.70 cm-diameter narcotic sphere the largest ¹Hγ/¹⁴Nγ and ¹²Cγ/¹⁴Nγ ratios are with methamphetamine (8.611 and 20.00 respectively), while the largest ¹Hγ/¹²Cγ ratio is with heroin (0.6450). Also, in the interaction between DT neutrons with the 20.32 cm-diameter narcotic sphere the largest ¹Hγ/¹⁴Nγ and ¹²Cγ/¹⁴Nγ ratios are with methamphetamine (15.922 and 18.700 respectively), while the largest ¹Hγ/¹²Cγ ratio is with heroin (0.991). Induced γ-rays and their ratios can be used to identify the narcotic.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113038"},"PeriodicalIF":2.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242863","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":"Hydrated electron and hydroxyl radical end-of-track yields under proton beam in water","authors":"Julien Audouin ,&nbsp;Laurent Desorgher ,&nbsp;Petter Hofverberg ,&nbsp;Gérard Baldacchino","doi":"10.1016/j.radphyschem.2025.112995","DOIUrl":"10.1016/j.radphyschem.2025.112995","url":null,"abstract":"<div><div>This article reports on the local variations of the average yields of hydrated electron and ^•OH induced by 62-MeV proton beams within the final 10 mm of their propagation in liquid water. The dose rate was at least 30 Gy/s in the Bragg peak. The yields were determined by conducting in-situ and real-time acquisitions along the beam track using scavengers in solution, which produce either a fluorescence light or a UV–visible light absorbance. We used Resazurin and AmplexRed as scavengers, that respectively react with the hydrated electron and ^•OH to form the fluorescent Resorufin. We also performed absorption measurements with the ferro/ferricyanide system to study the combined yields involving these two radicals. Proton irradiations revealed a minimum value of 2.2 × 10⁻⁷ mol/J for ^•OH yields measured with the ferrocyanide system in the Bragg peak. Yields of the hydrated electron and ^•OH obtained by fluorescence were significantly lower, probably due to both the dose rate effect that degrades the Resorufin fluorescence and the time resolution limit of the detection. For both absorbance and fluorescence measurements, the yields partially recovered in the distal part of the Bragg peak. The origin of this behavior is difficult to explain. We suggest that it might be related to the longitudinal straggling of the beam associated with the complex track structures found in and after the Bragg peak.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 112995"},"PeriodicalIF":2.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307801","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":"Growth and characterization of SrCl2 crystal for fast neutron spectroscopy","authors":"Nguyen Duy Quang ,&nbsp;Phan Bao Quoc Hieu ,&nbsp;H.J. Kim","doi":"10.1016/j.radphyschem.2025.113009","DOIUrl":"10.1016/j.radphyschem.2025.113009","url":null,"abstract":"<div><div>Chlorine-based scintillators with pulse shape discrimination capability are becoming attractive in the community due to their potential application in fast neutron spectroscopy. In this study, a pure SrCl₂ crystal was grown using the Bridgman method and characterized for its fast neutron detection via ³⁵Cl(n,p)³⁵S and ³⁵Cl(n,α)³²P reactions. The difference in the scintillation decay time under gamma and alpha irradiation was investigated using ¹³⁷Cs and ²⁴¹Am sources. Consequently, using pulse shape discrimination techniques, the proton and alpha particles from neutron capture reactions were detected and separated from background gamma signals. The SrCl₂ also exhibited a good energy resolution of about 5.4 % at 662 keVee. Other scintillation properties, such as emission spectrum, light yield, and nonproportionality, are also measured and reported in this study. Overal, the SrCl₂ crystal can be a candidate for fast neutron spectroscopy applications.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113009"},"PeriodicalIF":2.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231414","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":"Photoluminescence properties of modified kaolin ceramic in response to UV irradiation","authors":"N. Ouarab ,&nbsp;L. Benharrat ,&nbsp;N. Redjdal ,&nbsp;S. Mezghiche ,&nbsp;A. Manseri ,&nbsp;I. Toumert","doi":"10.1016/j.radphyschem.2025.113021","DOIUrl":"10.1016/j.radphyschem.2025.113021","url":null,"abstract":"<div><div>We introduce a new elective innovation involving the impregnation of activated nanoparticles into raw Algerian kaolin material. The process is based on the incorporation of AlPO₄ nanocrystals, firstly exposed to the UV irradiation, to advance intense light emission. Experimental results show that the modified kaolin (TK sample) exhibits superior performance, enabling broad and efficient light emission across the 376 to 760 nm range, with peak intensities reaching approximately ∼10⁷ counts/s. To monitor the evolution in the physical properties induced by AlPO₄ (NC), the structural and chemical compositions were caracterized using XRD, XRF, and FTIR techniques. Several substrates were prepared from different modified powders. The XRD analysis revealed that the achieved sample is composed by major kaolinite content showing a stoichiometric equilibrium between alumina (45 %) and silica (51 %). It crystallizes in the monoclinic system, space group Cc N° 9, with lattice parameters a = 5.14 Å, b = 8.90 Å, and c = 14.51 Å. In the analyses of ATR-FT-IR spectroscopy, the results show the appearance of wave number at ∼914 cm⁻¹ assigned to Al–Al–OH stretching. The characteristic peak at 675 cm⁻¹ is attributed to Al–O–Si deformation in kaolinite. Additionally, a weak Si–O stretching band at 750 cm⁻¹ of quartz, and a prominent band at 1050 cm⁻¹ associated with <span><math><msubsup><mtext>PO</mtext><mn>4</mn><mrow><mn>3</mn><mo>-</mo></mrow></msubsup></math></span> ions were observed. These findings suggest that, behind the UV irradiation, the presence of PO₄^3⁻ ions is primarily responsible for the observed high-intensity photoluminescence emissions, while oxygen and hydroxyl vacancies within the clay matrix further contribute to the enhancement of the photoluminescence emission intensity. Overall, our results are consistent and disclose the successful synthesis of kaolinite, with high sensitivity to the UV irradiation, for its use as a material for exhaust gas photocatalyst.</div></div>","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"237 ","pages":"Article 113021"},"PeriodicalIF":2.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242737","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}