Radiation Physics and Chemistry最新文献_第4页

Enhanced radiation shielding and damage resistance of AA6061 reinforced with TiB2: A Phy-X/PSD and SRIM/TRIM analysis TiB2增强AA6061的辐射屏蔽和抗损伤性能：物理x /PSD和SRIM/TRIM分析

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-08 DOI: 10.1016/j.radphyschem.2026.113707

Zübeyde Özkan , Seda Gürgen Avşar , Uğur Gökmen , Sema Bi̇lge Ocak

In this study, the radiation shielding properties of AA6061 and its composite material reinforced with 5% TiB₂ ceramic were investigated using the Phy-X/PSD program for gamma ⁶⁰Co isotope gamma radiation (1173 keV). Key shielding parameters such as the linear attenuation coefficient (LAC), half-value layer (HVL), tenth-value layer (TVL), mean free path (MFP), and effective conductivity (C_eff) were analyzed. The results indicate that the LAC values for AA6061 and AA6061 + 5% TiB₂ were 15.394 cm⁻¹ and 15.874 cm⁻¹, respectively, while the HVL values were determined as 0.045 cm and 0.0436 cm, respectively. The findings suggest that the TiB₂ reinforcement enhances radiation attenuation efficiency. Additionally, SRIM/TRIM simulations were performed to examine the effects of gamma ⁶⁰Co isotope irradiation on these materials at 1173 keV, focusing on mechanisms such as ionization, phonon interactions, and material damage analysis. The total damage values were found to be 16.73 for AA6061 and 16.59 for AA6061 + 5% TiB₂, indicating that the composite structure experiences slightly less damage due to the presence of TiB₂. The combined results from Phy-X/PSD and SRIM/TRIM analyses demonstrate that the addition of 5% TiB₂ enhances the radiation absorption capacity of AA6061, making it a promising candidate for applications requiring improved radiation shielding performance.

本研究利用Phy-X/PSD程序研究了AA6061及其复合材料（5% TiB2陶瓷增强）对γ - 60Co同位素（1173 keV）辐射的屏蔽性能。分析了线性衰减系数（LAC）、半值层（HVL）、十值层（TVL）、平均自由程（MFP）和有效电导率（Ceff）等关键屏蔽参数。结果表明，AA6061和AA6061 + 5% TiB2的LAC值分别为15.394 cm−1和15.874 cm−1，HVL值分别为0.045 cm和0.0436 cm。结果表明，TiB2增强可以提高辐射衰减效率。此外，我们还进行了SRIM/TRIM模拟，以研究伽玛60Co同位素辐照对这些材料在1173 keV下的影响，重点研究电离、声子相互作用和材料损伤分析等机制。结果表明，AA6061 + 5% TiB2的总损伤值为16.73，AA6061 + 5% TiB2的总损伤值为16.59，表明TiB2的存在使复合材料结构受到的损伤略小。Phy-X/PSD和SRIM/TRIM分析的综合结果表明，添加5%的TiB2增强了AA6061的辐射吸收能力，使其成为需要改善辐射屏蔽性能的应用的有希望的候选者。

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引用次数: 0

A comparative analysis of radiation shielding character in engineered bricks blended with CaO, Al2O3, and Fe2O3 additives: thermal stability and Phy-X simulation insights into attenuation characteristics 掺有CaO、Al2O3和Fe2O3添加剂的工程砖的辐射屏蔽特性对比分析：热稳定性和衰减特性的物理- x模拟分析。

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-07 DOI: 10.1016/j.radphyschem.2026.113674

Anoud Saud Alshammari , U. Rilwan , Feras Alafer , Marwan F.S.H. AL-Kamali , Aml Almutery , Atef El-Taher

This study employed Phy-X software to investigate the radiation protection efficacy of different bricks fabricated from a mixture of clay, CaO (calcium oxide), Al₂O₃ (aluminum oxide), and Fe₂O₃ (iron oxide). As the oxide additives substituted clay, an increased in the density of the fabricated samples was noticed, with CL5Fe showcasing the superior value of 2.40 g/cm³. An improved linear attenuation coefficient (LAC) was also noticed, with CL5Fe demonstrating the greatest LAC value of 0.154 cm⁻¹ at 0.6 MeV, which could be associated to its superior density due to presence of Fe₂O₃. The 0.6 MeV energy was chosen as a representative 137Cs value within the Compton-dominant region. Shielding performance was further evaluated from 0.0459 to 1.46 MeV, covering photoelectric-to-Compton-dominated interactions. CL5Fe also outsmarted other samples in terms of thermal stability and structural integrity, making it the best choice for gamma radiation protection. Future studies should evaluate shielding performance across 1.47–15 MeV to assess material suitability for medical imaging, radiotherapy, and nuclear radiation environments.

本研究采用Phy-X软件对粘土、CaO（氧化钙）、Al2O3（氧化铝）和Fe2O3（氧化铁）混合制成的不同砖块的辐射防护效果进行了研究。当氧化物添加剂取代粘土时，制备样品的密度增加，CL5Fe表现出2.40 g/cm3的优越值。线性衰减系数（LAC）的提高也被注意到，CL5Fe在0.6 MeV时显示出最大的LAC值为0.154 cm−1，这可能与由于Fe2O3的存在而具有优越的密度有关。选择0.6 MeV能量作为康普顿优势区内具有代表性的137Cs值。在0.0459至1.46 MeV范围内进一步评估屏蔽性能，涵盖光电-康普顿主导相互作用。CL5Fe在热稳定性和结构完整性方面也优于其他样品，使其成为伽马辐射防护的最佳选择。未来的研究应评估1.47-15 MeV的屏蔽性能，以评估材料在医学成像、放疗和核辐射环境中的适用性。

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引用次数: 0

Corrigendum to “Multi-technique radiometric assessment of a desert-marine ecosystem facilitating radiological-environmental safety in hyper-arid regions” [Radiat. Phys. Chem. 240, (March 2026), 113404] “促进超干旱区辐射环境安全的沙漠-海洋生态系统的多技术辐射计量评估”的勘误表。理论物理。化学。240,(March 2026), 113404]

IF 2.9 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-07 DOI: 10.1016/j.radphyschem.2026.113681

Prasoon Raj, Haohan Zhang, Abdelouas Abdesselam, Ahmed K. Alkaabi, Yacine Addad, Valérie Bossé, Noor Faraj, Raed Bamardoof, Irené Saayman, Mohamed Bagahizel, Abdulla AlHameli, Abdulla Alali, Marcel Mokili

引用次数: 0

Unveiling the gamma rays attenuation mechanism in Szaibelyite ore-based shielding composites: The limiting role of low atomic number elements 揭示稀土矿基屏蔽复合材料中伽马射线衰减机制：低原子序数元素的限制作用

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-06 DOI: 10.1016/j.radphyschem.2026.113692

Mengge Dong , Suying Zhou , Haofei Zhou , G. Lakshminarayana , M.I. Sayyed , Xiangxin Xue

Szaibelyite ore has been demonstrated as a cost-effective filler with excellent thermal neutron shielding properties, and the resulting Szaibelyite ore-based epoxy composites exhibit performance superior to some high-end commercial materials. However, the hazards associated with secondary radiation emitted from interactions between thermal neutrons and elements such as boron and hydrogen during the shielding process remain inadequately studied. This paper integrates experimental measurements, computational simulations, and radiation protection theory to systematically investigate the gamma rays shielding performance, attenuation mechanisms, and relevant shielding parameters (for both narrow and broad beams) of Szaibelyite ore-based epoxy composites within the 0.015–15 MeV energy range. The results indicate that while the gamma rays shielding capacity of the composites enhances with increasing Szaibelyite ore content, while HVL_γ of composites SE1−SE5 are between 6.5119 and 8.5366 cm, which is relatively low compared to ordinary concrete, and the protection against secondary radiation must be seriously addressed. Interpretation of the attenuation mechanisms based on elemental composition reveals that the shielding effectiveness is primarily determined by the predominant elements in the composites. Given that magnesium (Mg) is the element with the highest atomic number in the system, the fundamental reason for the weak gamma rays attenuation lies in the lack of high-atomic-number elements with strong shielding capabilities. This study provides a theoretical foundation and data support for the transformation of Szaibelyite ore into high-value shielding materials, contributing not only to the high-value utilization of boron resources and the sustainable development of the boron industry but also offering a new alternative pathway for developing low-cost, high-performance shielding materials.

szaibeliite矿已被证明是一种具有优异热中子屏蔽性能的经济高效的填料，并且由此产生的szaibeliite矿基环氧复合材料的性能优于一些高端商用材料。然而，在屏蔽过程中，热中子与硼、氢等元素相互作用产生的二次辐射的危害仍未得到充分研究。本文结合实验测量、计算模拟和辐射防护理论，系统研究了0.015-15 MeV能量范围内Szaibelyite矿基环氧复合材料的伽马射线屏蔽性能、衰减机制和相关屏蔽参数（窄束和宽束）。结果表明：复合材料屏蔽γ射线的能力随着szaibelite矿石含量的增加而增强，但复合材料SE1 ~ SE5的HVLγ在6.5119 ~ 8.5366 cm之间，与普通混凝土相比较低，必须重视对二次辐射的防护；基于元素组成的衰减机制解释表明，屏蔽效果主要由复合材料中的优势元素决定。由于镁（Mg）是体系中原子序数最高的元素，所以伽马射线衰减弱的根本原因在于缺乏屏蔽能力强的高原子序数元素。本研究为szaibeleite矿转化为高价值屏蔽材料提供了理论基础和数据支持，不仅有助于硼资源的高价值利用和硼工业的可持续发展，而且为开发低成本、高性能的屏蔽材料提供了新的替代途径。

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引用次数: 0

Application of ionizing radiation technology in agro-industrial waste: A review 电离辐射技术在农工废弃物中的应用综述

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-06 DOI: 10.1016/j.radphyschem.2026.113690

J.P.A.A. Barros , V. Spagnol , L.M. Rondan-Flores , B.G. Negrão , V.F. Benedetti , A.L.C.H. Villavicencio

The world produces large quantities of raw materials from agriculture, aquaculture, forestry, and livestock. However, there are estimated losses of up to 50% of raw materials throughout the harvesting, slaughtering, transportation, processing, storage, and consumption stages. Due to its composition, agro-industrial waste may be slower to degradable, resulting in accumulation and negative environmental impact. Despite this, these residues retain considerable concentrations of important bioactive compounds that could be reincorporated into new formulations. Because of this, it is essential to identify applications to convert these wastes into high-value-added products. In this context, ionizing radiation has stood out as a promising technique among the current resources available for reusing waste and reducing microbial load, as it is a clean technology, does not generate additional waste, and does not raise the temperature during processing, the main limitation of conventional methods. With ionizing radiation, a new proposal for waste management emerges to reincorporate it into new products, reducing waste and reducing environmental impact. Thus, this review summarizes the most recent research on the application of nuclear energy as a viable solution and technological innovation for reusing agro-industrial waste, addressing its positive and negative effects on nutritional preservation and availability of bioactive compounds. In addition, it provides a brief analysis of the acceptability of this technology and the dissemination of information about the benefits of this process in food and waste.

世界从农业、水产养殖、林业和畜牧业中生产大量的原材料。然而，据估计，在整个收获、屠宰、运输、加工、储存和消费阶段，原材料的损失高达50%。由于其组成，农工废弃物的降解速度可能较慢，从而导致积累和负面的环境影响。尽管如此，这些残留物保留了相当浓度的重要生物活性化合物，可以重新合并到新的配方中。因此，必须确定将这些废物转化为高附加值产品的应用。在这种情况下，电离辐射作为一种有前途的技术，在目前可用于废物再利用和减少微生物负荷的资源中脱颖而出，因为它是一种清洁技术，不会产生额外的废物，并且在处理过程中不会提高温度，这是传统方法的主要限制。随着电离辐射的出现，一种新的废物管理建议出现，将其重新纳入新产品中，减少浪费并减少对环境的影响。因此，本文综述了核能作为农业工业废物再利用的可行解决方案和技术创新的最新研究，讨论了核能对营养保存和生物活性化合物可用性的积极和消极影响。此外，它还简要分析了该技术的可接受性，并传播了有关该过程在食品和废物中的好处的信息。

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引用次数: 0

Resistance of refractory high-entropy alloys to ultrafast laser irradiation 难熔高熵合金对超快激光辐照的抗性

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-06 DOI: 10.1016/j.radphyschem.2026.113694

Nikita Medvedev

Response of refractory high-entropy alloys MoNbTaVW and HfNbTaTiZr to ultrafast laser radiation is modelled with the hybrid code XTANT-3, combining tight-binding molecular dynamics with the transport Monte Carlo and Boltzmann equation. A two-temperature state with elevated electronic temperature and a cold atomic lattice is studied. The parameters of the electronic system in such a state are evaluated: electronic heat capacity, thermal conductivity, and electron-phonon coupling parameter with the electronic temperatures up to ∼25,000 K. It is also demonstrated that the two refractory alloys do not show signs of nonthermal melting up to the deposited doses of ∼10 eV/atom, making them more radiation resistant than the Cantor alloy or stainless steel. These results suggest that heavy-element high-entropy alloys are more radiation resistant than those containing only lighter elements. Damage in irradiated HfNbTaTiZr starts with the selective diffusion of Ti atoms, forming a transient superionic-like state.

采用混合代码XTANT-3，结合分子动力学、输运蒙特卡罗方程和玻尔兹曼方程，建立了难熔高熵合金MoNbTaVW和HfNbTaTiZr对超快激光辐射的响应模型。研究了电子温度升高和原子晶格冷的双温态。评估了这种状态下电子系统的参数：电子热容，导热系数和电子-声子耦合参数，电子温度高达~ 25,000 K。研究还表明，这两种难熔合金在沉积剂量达到~ 10 eV/原子时不会出现非热熔化的迹象，这使它们比康托合金或不锈钢更耐辐射。这些结果表明，重元素高熵合金比那些只含有较轻元素的合金更耐辐射。辐照后的HfNbTaTiZr损伤始于Ti原子的选择性扩散，形成瞬态超电子态。

引用次数: 0

Optimization of the cross section data for the cyclotron production of 56Co, 57Co, and 58mCo radionuclides 回旋加速器生产56Co、57Co和58mCo放射性核素截面数据的优化

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-06 DOI: 10.1016/j.radphyschem.2026.113699

Samar , N. Amjed , A. Naz , A.M. Wajid

An evaluation of production cross sections for the medically and industrially important cobalt radionuclides, namely, ^58mCo, ⁵⁷Co, and ⁵⁶Co, was performed. Experimental data from literature were compiled and critically analyzed in comparison with theoretical results of three nuclear model codes TALYS-1.9, EMPIRE-3.2, and ALICE-IPPE. A theory-aided evaluation methodology was used to generate the recommended Cross sections for each production route and their corresponding impurities. Using these recommended datasets, thick target yields were calculated for all investigated production routes with their impurities. The best production routes were suggested with optimum energy ranges for high-purity production of ^58mCo, ⁵⁷Co, and ⁵⁶Co radionuclides. In particular, the ⁵⁵Mn(α,n)^58mCo (13 → 7 MeV), ⁵⁷Fe(p,n)⁵⁷Co (15 → 6 MeV), and ⁵⁶Fe(p,n)⁵⁶Co (16 → 8 MeV) reactions were found to be the most favorable for reliable cyclotron production.

对医学上和工业上重要的钴放射性核素（即58mCo、57Co和56Co）的生产截面进行了评估。整理文献中的实验数据，并与三个核模型代码TALYS-1.9、EMPIRE-3.2和ALICE-IPPE的理论结果进行了批判性分析。一种理论辅助评价方法被用于生成每条生产路线及其相应杂质的推荐截面。使用这些推荐的数据集，计算了所有研究的含杂质生产路线的粗目标产率。提出了58mCo、57Co和56Co高纯度放射性核素的最佳生产路线和最佳能量范围。其中55Mn(α,n)58mCo（13→7 MeV）、57Fe(p,n)57Co（15→6 MeV）和56Fe(p,n)56Co（16→8 MeV）反应最有利于产生可靠的回旋加速器。

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引用次数: 0

Monte Carlo-based assessment of solid phantom equivalence to water in radiation therapy quality assurance 基于蒙特卡罗的放射治疗质量保证中固体幻相与水等效性评估

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-06 DOI: 10.1016/j.radphyschem.2026.113693

A. Khallouqi , H. Sekkat , O. Elmouden , N. Ghosne , I. Lagrini , A. Halimi , O. El rhazouani

Accurate dosimetry is crucial for optimizing radiotherapy outcomes, balancing tumor control with healthy tissue sparing. Water phantoms represent the gold standard due to their tissue-equivalent properties, yet practical limitations such as setup complexity and portability drive the need for solid alternatives. This study employs Monte Carlo simulations using the GATE platform to comprehensively evaluate the dosimetric equivalence of common solid phantoms; RW3, Nylon, PMMA, Polyester, Polyethylene, Polystyrene, Original Plastic Water, and Virtual Water; against water for a 6 MV flattened photon beam from a Varian TrueBeam linear accelerator. Dosimetric parameters, including percentage depth dose (PDD) curves, lateral dose profiles at depth of 10 cm, and 3D volumetric dose distributions, were assessed under identical beam configurations (10 × 10 cm² field size, 100 cm SSD). Validation against experimental data acquired using a PTW Semiflex ionization chamber (0.125 cm³) in a motorized water phantom confirmed simulation fidelity, with gamma pass rates exceeding 99% (2%/2 mm criterion). Results ranked RW3 as the superior water substitute (mean PDD deviation: 0.65%; lateral: 4.68%; RMSE: 5.62%), followed by Plastic and Virtual phantoms, while Nylon, and Polyester exhibited unacceptable deviations (>10%). Polyethylene showed anomalous positive bias (+3.98% PDD). These findings, benchmarked against IAEA and AAPM tolerance criteria (±2% for reference dosimetry, ±3% for routine QA), highlight material-specific radiological properties influencing photon interactions, underscoring RW3's utility for clinical quality assurance while identifying materials requiring correction factors (Polystyrene, Polyethylene) or unsuitable for clinical use without extensive adjustments (Nylon, Polyester exceeding 10% deviation).

准确的剂量测定对于优化放疗结果、平衡肿瘤控制与健康组织保留至关重要。由于其与组织相当的特性，水幻影代表了黄金标准，但实际限制，如设置复杂性和可移植性，推动了对固体替代品的需求。本研究利用GATE平台进行蒙特卡罗模拟，综合评价了常见固体幻影的剂量学等效性；RW3、尼龙、PMMA、聚酯、聚乙烯、聚苯乙烯、原塑料水、虚拟水；对来自瓦里安TrueBeam直线加速器的6 MV扁平光子束进行了实验。剂量学参数，包括百分比深度剂量（PDD）曲线、10 cm深度侧位剂量分布和三维体积剂量分布，在相同的光束配置（10 × 10 cm2场大小，100 cm SSD）下进行评估。利用电动水幻影中的PTW Semiflex电离室（0.125 cm3）获得的实验数据进行验证，证实了模拟的保真度，伽马通过率超过99% （2%/ 2mm标准）。结果显示，RW3是最佳的水替代品（平均PDD偏差：0.65%；横向：4.68%;RMSE: 5.62%），其次是塑料和虚拟幻影，而尼龙和聚酯的偏差为不可接受的（>10%）。聚乙烯显示异常正偏（+3.98% PDD）。这些发现以IAEA和AAPM公差标准为基准（参考剂量测定±2%，常规QA±3%），突出了影响光子相互作用的材料特异性放射学特性，强调了RW3在临床质量保证方面的实用性，同时确定了需要校正因子（聚苯乙烯、聚乙烯）或不适合临床使用的材料（尼龙、聚酯超过10%的偏差）。

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引用次数: 0

On the Precision and Accuracy of Audi-Wapstra-Wang Extrapolations for Nuclear Mass Predictions 核质量预测中Audi-Wapstra-Wang外推法的精度和准确性

IF 2.9 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-06 DOI: 10.1016/j.radphyschem.2026.113697

K. Venkataramaniah, C. Scheidenberger, K. Vijay Sai, Deepa Seetharaman

引用次数: 0

Effect of gamma irradiation treatment on the technological characteristics of quinoa flour 辐照处理对藜麦面粉工艺特性的影响

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry

Pub Date : 2026-02-05 DOI: 10.1016/j.radphyschem.2026.113691

Sarah Sanaei Nasab , Neda Mollakhalili-Meybodi , Masoumeh Arab , Seyede Marzieh Hosseini , Hossein Fallahzadeh

Quinoa seeds were irradiated at doses of 0.5, 1, 2.5, 5, 7.5, and 10 kGy and then their technological characteristics were analyzed as physicochemical, functional, rheological, thermal, pasting, textural, FTIR, and morphological parameters.

Results indicated that gamma irradiation affected the glycosidic linkage of starch, the amylose/amylopectin ratio, and the tertiary structure of proteins, depending on dose. WHC (1.88 ± 0.01%), OHC (1.76 ± 0.01%), and WSI (4.09 ± 0.02 g/g) increased at 10 kGy, compared with the control, verified the enhanced hydrolytic depolymerization of starch. Significant decrease in the viscosity parameters (peak, hold, final, and setback), G’ and G”, and significant increase in tan δ (1.37 × 10⁻¹±0.02 to 2.43 × 10⁻¹±0.05) was observed. The lowest gelatination temperatures (onset, peak, conclusion) and enthalpy change of gelatinization were observed in sample irradiated at 10 kGy, which was attributed to the highest damage in starch structure induced by gamma irradiation. A decrease in hardness with increasing doses of gamma irradiation indicated increased crystallization of amylopectin. The analysis of FTIR confirmed the effects of gamma irradiation on carbohydrate and water absorption capacity, showing a reduction in O–H stretching vibrations and increases in C–H stretching and CO stretch, especially at 10 kGy. Scanning electron microscopy showed surface cracks and weakening of starch granules at 7.5 and 10 kGy. These results confirmed that higher doses affected technological properties and may be useful in food formulation.

以0.5、1、2.5、5、7.5和10 kGy的辐照剂量对藜麦种子进行理化、功能、流变、热、糊化、质地、FTIR和形态等工艺参数的分析。结果表明，γ辐照对淀粉的糖苷链、直链/支链淀粉比和蛋白质的三级结构有不同剂量的影响。与对照组相比，10 kGy时WHC（1.88±0.01%）、OHC（1.76±0.01%）和WSI（4.09±0.02 g/g）均增加，证实了淀粉水解解聚的增强。黏度参数（峰值、保持、终值和挫折）G′和G′显著降低，tan δ显著升高（1.37 × 10−1±0.02 ~ 2.43 × 10−1±0.05）。在10 kGy辐照下，样品的凝胶化温度（起始、峰值、结束）和凝胶化焓变最低，这是由于辐照对淀粉结构的破坏最大。随着辐照剂量的增加，硬度降低，表明支链淀粉结晶增加。FTIR分析证实了γ辐照对碳水化合物和水吸收能力的影响，表明O-H拉伸振动减少，C-H拉伸振动和CO拉伸振动增加，特别是在10 kGy时。扫描电镜显示，在7.5和10 kGy下，淀粉颗粒表面出现裂纹和减弱。这些结果证实，较高的剂量会影响工艺性能，并可能在食品配方中有用。

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引用次数: 0