Heavy ion range anisotropy in muscovite mica

Singh, Mohan; Kaur, Navjeet; Singh, Lakhwant

doi:10.1016/j.nimb.2010.06.024

Cited by 12 publications

(5 citation statements)

References 43 publications

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“…Besides low cost and stability, muscovite has partial advantages such as good electric insulation, heat isolation [15] and transparency. These advantages are beneficial for storing accumulated effects and observing ion track especially for ion irradiation [5,16]. It may have potential application in high-dose irradiation detection [17].…”

Section: Introductionmentioning

confidence: 99%

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Intensive study on structure transformation of muscovite single crystal under high-doseγ-ray irradiation and mechanism speculation

et al. 2019

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Intensive study on structure transformation of muscovite single crystal under high-dose γ -ray irradiation is essential for its use in irradiation detection and also beneficial for mechanism cognition on defect formation within a matrix of clay used in the disposal of high-level radioactive waste (HLRW). In this work, muscovite single crystal was irradiated with Co-60 γ ray in air at a dose rate of 54 Gy min −1 with doses of 0–1000 kGy. Then, structure transformation and mechanism were explored by Raman spectrum, Fourier-transform infrared spectrum, X-ray diffraction, thermogravimetric analysis, CA, scanning electron microscope and atomic force microscopy. The main results show that variations in the chemical/crystalline structure are dose-dependent. Low-dose irradiation sufficiently destroyed the structure, removing Si–OH, thus declining hydrophilicity. With dose increase up to 100 kGy, CA increased from 20° to 40°. Except for hydrophilicity variation, shrink occurred in the (004) lattice plane which later recovered; the variation range at 500 kGy irradiation was 0.5% close to 0.02 Å. The main mechanisms involved were framework break and H 2 O radiolysis. Framework break results in Si–OH removal and H 2 O radiolysis results in extra OH introduction. The extra introduced OH probably results in Si–OH bond regeneration, lattice plane shrink and recovered surface hydrophilicity. The importance of framework break and H 2 O radiolysis on structure transformation is dose-dependence. At low doses, framework break seems more important while at high doses H 2 O radiolysis is important. Generally, variations in the chemical structure and surface property are nonlinear and less at high doses. This indicates using the chemical structure or surface property variation to describe irradiation is correct at low doses but not at high doses. This finding is meaningful for realizing whether muscovite is suitable for detecting high-dose irradiation or not, and mechanism exploration is efficient for identifying the procedure for defect formation within the matrix of clay used in disposal HLRW in practice.

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Section: Introductionmentioning

confidence: 99%

“…In the field of irradiation detection, for good stability and low cost, muscovite is proposed as a detector [5][6][7][8][9]. Its sensibility has been explored at normal doses (less than 300 kGy) [8,10] while sensibility at higher doses is rarely studied, which demands more study.…”

Section: Introductionmentioning

confidence: 99%

Intensive study on structure transformation of muscovite single crystal under high-doseγ-ray irradiation and mechanism speculation

et al. 2019

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“…Mica-based materials offer both layered and nanoporous templates for interesting fabrications (19)(20)(21). Being cheap and abundant, mica has been widely studied under the influence of SHI irradiation (22)(23)(24)(25). In this article, we have studied the effects of SHI irradiation on mica schist and coal minerals obtained from the Sikkimese Himalaya.…”

Section: Introductionmentioning

confidence: 99%

Effects of swift heavy ion-irradiation on mica- and coal-based rocks of Lower Himalayas in Sikkim, India

Tiwari

Saikiran

Tripathi

et al. 2013

Radiation Effects and Defects in Solids

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Naturally occurring mica schist and coal sedimentary sequence in Sikkimese Himalaya were collected and investigated by two micro-techniques: scanning electron microscopy/energy dispersive spectrometry and Raman spectroscopy. They were applied to identify the constituents and the structure of the minerals before and after swift heavy ion irradiation. Vibrational data and the constituents of abundantly found mica schist and coal-based rock were acquired at room temperature and were compared with those reported for their analogues in the previous reports.

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“…The distribution of Al and Si in tetrahedral site in muscovite shows no long range ordering. The most stable surface [0 0 1] was produced for heavy ion irradiation after cleaving the muscovite crystal above and below the loosely bond interlayers [7][8][9][10] . So, both surface could interacted with rubber [11] .…”

Section: Introductionmentioning

confidence: 99%

Effect of Silane Coupling Agent on the Curing, Tensile, Thermal, and Swelling Properties of EPDM/Mica Composites

Ismail

Hamid

Ishak

2012

AMR

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In this work, the influence of silane (bis (3-triethoxysilylpropyl) tetrasulfide) or Si69 coupling agent on properties of EPDM/mica composites was studied. Both EPDM/mica composites with silane and without silane were compounded using two roll mill at various filler loading (i.e., 100/0, 100/10, 100/30, 100/50, 100/70). The tensile and thermal properties as well as fracture surfaces of composites were tested using Instron Universal Testing Machine, Thermal Gravimetric Analysis (TGA) and Emission Scanning Electron Microscope (SEM). The results indicated that the optimum cure (t90), scorch time (ts2) value was lower, while maximum torque (MH) value slightly higher for EPDM/mica composites with silane compared to EPDM/mica composites without silane. The tensile properties, M100 and M300 value increased for EPDM/mica composites in the presence of silane and the optimum filler loading for those properties occurred at 50 phr. In addition, thermal stability and swelling ratio for both composites improved with increasing filler loading. However, EPDM/mica composites with silane show better thermal stability and swelling ratio due to stronger linkage taking place at the rubberfiller boundary and it promotes filler dis-agglomeration.

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Heavy ion range anisotropy in muscovite mica

Cited by 12 publications

References 43 publications

Intensive study on structure transformation of muscovite single crystal under high-doseγ-ray irradiation and mechanism speculation

Intensive study on structure transformation of muscovite single crystal under high-doseγ-ray irradiation and mechanism speculation

Effects of swift heavy ion-irradiation on mica- and coal-based rocks of Lower Himalayas in Sikkim, India

Effect of Silane Coupling Agent on the Curing, Tensile, Thermal, and Swelling Properties of EPDM/Mica Composites

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