Investigation of gamma radiation induced changes in local structure of borosilicate glass by TDPAC and EXAFS

Kumar, Ashwani; Nayak, Chandrani; Rajput, Parasmani; Mishra, R.; Bhattacharyya, D.; Kaushik, C.P.; Tomar, B. S.

doi:10.1007/s10751-016-1361-y

Cited by 6 publications

(5 citation statements)

References 19 publications

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“…The radiation induced borate structure modification seems to be noticeable based on the IR band increase near 1417-1427 cm −1 , which represents B-O-stretching vibration mode of [BO 3 ] species. 12,34,35 The results imply that the modified NJE and NJ2 glass contain more [BO 3 ] species at the expense of [BO 4 ] species after the γ-irradiation. The small band near 1620 cm −1 likely represents a bending mode of the molecular water 33 Characterization of glass radiation resistance often uses attenuation index of glass transmission (S), which describes the change of glass transmission at a given wavelength of the visible range before and after the glass being irradiated.…”

Section: Discussionmentioning

confidence: 87%

“…The results seem to suggest that γ‐radiation changes the structure of borates in the two boron‐containing glasses and in turn, it facilitates the surface interaction of the modified glass with moisture water in the air as the boron‐containing samples exposed to the γ‐radiation. The radiation induced borate structure modification seems to be noticeable based on the IR band increase near 1417‐1427 cm −1 , which represents B‐O‐ stretching vibration mode of [BO 3 ] species 12,34,35 . The results imply that the modified NJE and NJ2 glass contain more [BO 3 ] species at the expense of [BO 4 ] species after the γ‐irradiation.…”

Section: Discussionmentioning

confidence: 87%

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Glass resistance to radiation–part I: Preliminary investigation of three commercial glass fibers

Song

Zeng

et al. 2020

Int J of Appl Glass Sci

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The effects of γ-radiation on properties of three types of commercial alkaline earth aluminosilicate glasses (NJE, NJ1, NJ2) were investigated at 5M Gy dosage, using samples of bulk glass, glass fiber, and fiber reinforced laminate epoxy composite. The radiation-induced defect generation and structural modifications in the bulk glasses were characterized by UV-VIS-NIR, FTIR absorption spectroscopy, respectively.Strong radiation resistance was found in NJ2 composed of high content of glass former such as Si and Al, together with variable Fe and Ce oxide. Mechanical properties of the fiber woven fabric taps and reinforced laminate composites were investigated before and after the irradiation. While the tap samples showed minor property degradations after the irradiation, all composite samples degraded by greater than 19% in tensile strength and greater than 55% in interlaminate shear strength (ILSS) at 5M Gy dose level. Deterioration of the composite mechanical properties is primarily attributed to the radiation damage to the epoxy resin and in turn, the failure mode of the irradiated composite samples is dominated by delamination at the interfaces between the fiber glass tapes and the resin under the applied tensile load or shear as compared with the failure mode of fiber breakages for their counterparts without γ-irradiation. K E Y W O R D Sglass fiber, glass reinforced plastic composites, glass structure, mechanical property, γ-radiation

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 87%

Glass resistance to radiation–part I: Preliminary investigation of three commercial glass fibers

Song

Zeng

et al. 2020

Int J of Appl Glass Sci

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“…Earlier studies show that although high doses (>10 7 Gy) of γ irradiation cause defects in borosilicate glass, no significant changes of the mechanical properties were observed 4,8–10 . Kumar indicated that the borosilicate glass is stable at a γ dose of at least 5 × 10 7 Gy 11,12 . Kaur reported an increase of BO 3 group and nonbridging oxygen (NBO) in the γ‐irradiated glass, which can lead to the loose of glass network 13 .…”

Section: Introductionmentioning

confidence: 99%

“…4,[8][9][10] Kumar indicated that the borosilicate glass is stable at a γ dose of at least 5 × 10 7 Gy. 11,12 Kaur reported an increase of BO 3 group and nonbridging oxygen (NBO) in the γ-irradiated glass, which can lead to the loose of glass network. 13 Du proposed that not only interband transition but also intraband transition occurred in the irradiated glass.…”

Section: Introductionmentioning

confidence: 99%

Elemental behaviors of γ‐irradiated borosilicate glass as a vitrification model

Zhang

Xia

Zeng

et al. 2023

Int J of Appl Glass Sci

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Borosilicate glass has been extensively studied due to its unique properties of solidifying high-level radioactive waste (HLW). However, the responses of borosilicate glass under γ irradiation are not fully understood. In this work, NBS9 and NBS10 glass were irradiated by γ-rays at absorbed doses of 8 kGy and 800 kGy, respectively. Scanning electronic microscopy, energy dispersive X-ray, and time-of-flight secondary ion mass spectrometry (ToF-SIMS) were used to observe the surface morphology and elemental distributions. The results show that the borosilicate glass remains stable until the absorbed dose was up to 800 kGy. At 800 kGy, the samples precipitate particles composed of Na and O on the surface. Na and B near the surface are significantly reduced under γ-rays irradiation. The results indicate that the effects of γ irradiation on glass vitrification are obvious with certain accumulated doses. The changes of glass structures and elemental distributions by γ-ray irradiation are also dependent on glass compositions.

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“…[15][16][17][18] Besides thermal stability, the structural stability against ionizing radiations generated from radioactive nuclides need to be examined experimentally since the effect of high energy radiation may leads to structural instability by disturbing the periodic arrangements of atoms in the matrix. [19][20][21][22][23][24] Temporal activity profile of radionuclides suggests that beta radiation from fission products is the major cause of concern in case of waste generated from thorium based advance nuclear fuel cycle. [24] Short lived fission products such as 90 Sr, 90 Y, 137 Cs etc.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Thermodynamic Behavior and the Effect of Temperature and Electron Radiation on the Structure of Fluorapatite Compounds

et al. 2021

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Fluorapatite compounds of calcium and strontium; (Ca10(PO4)6F2 and Sr10(PO4)6F2), are being explored as alternative to borosilicate glass matrix for nuclear waste immobilization. This study is aimed at investigating the thermodynamic behavior of these compounds as well as the effect of temperature and electron radiation on their crystal lattice. Heat capacity and enthalpy increments of these compounds were measured using calorimetric technique. Thermal expansion up to 1073 K was measured by High Temperature X‐ray Diffraction (HT‐XRD). Electron beam radiation induced polymeric phosphate linkage formation in the structure was evidenced by vibrational spectroscopy (FTIR and Raman). Combined XRD, IR and Raman study revealed that Ca10(PO4)6F2 is more resistant towards structural damage upon electron beam irradiation as compared to Sr10(PO4)6F2.

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Investigation of gamma radiation induced changes in local structure of borosilicate glass by TDPAC and EXAFS

Cited by 6 publications

References 19 publications

Glass resistance to radiation–part I: Preliminary investigation of three commercial glass fibers

Glass resistance to radiation–part I: Preliminary investigation of three commercial glass fibers

Elemental behaviors of γ‐irradiated borosilicate glass as a vitrification model

Exploring the Thermodynamic Behavior and the Effect of Temperature and Electron Radiation on the Structure of Fluorapatite Compounds

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