Lyoluminescence from gamma-irradiated NaCl

Kalkar, C. D.

doi:10.1016/1359-0197(89)90275-0

Cited by 4 publications

(3 citation statements)

References 43 publications

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“…In spite of this, measured LL intensity profiles exhibit maxims in 1.3 µm region due to the heterogeneous solvent -solid substance interactions during the dissolution of irradiated sample or surface effects on radiation damage. The second of both mentioned possibilities was pointed out in [11] discussing the influence of single crystal surface upon formation of radiation in irradiated alkali halides as well in inorganic salts [12][13][14][15][16][17][18][19][20][21][22]. Direct micro spectrophotometric measurements of radiation damage profiles of accelerated ions LiF [7] also indicates increased concentration of F and F3 centres in the surface region.…”

Section: (C) Ionsmentioning

confidence: 99%

Dosimetry of Charged Particles Using Lyoluminescence Method

Lescinskis¹,

Ķizāne²,

Supe³

et al. 2017

Phys. Sci. Technol.

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Interaction of charged particles -protons, nitrogen, oxygen and carbon ions with LiF single crystals were studied using lyoluminescence method. Obtained linear energy transfer profiles were compared with those ones calculated by Monte Carlo method. The shape of the calculated and measured profiles was found to be comparable with Brag's curve. Analyses of differences in shape of calculated and experimentally measured curves were performed. It is demonstrated that by gradually dissolving the crystal in the form of a disk, rotating it with constant angular rate around its axis of symmetry, it is possible to determinate the defect distribution over the crystal depth with a resolution of the order of 1µm according to measurements of lyoluminescence intensity. Also, a good precision of lyoluminescence intensity measurement and agreement of experimental energy loss profiles with the theoretical ones are noted. Significant deviations from calculated profiles were observed in distances closer than 10 -6 m to solid surface.

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Section: (C) Ionsmentioning

confidence: 99%

Dosimetry of Charged Particles Using Lyoluminescence Method

Lescinskis¹,

Ķizāne²,

Supe³

et al. 2017

Phys. Sci. Technol.

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“…The large quenching effect of the hydrated electron acceptors indicates that the released F center undergoes hydration before its recombination with a V 2 center. 4,17 The rapid recombination of the hydrated electron with a V 2 center at the water-solid interface gives rise to the luminescence. Schematically the process reads as follows: The increase in luminosity of colored halide crystals is due to the presence of trace impurities in these crystals.…”

Section: Mechanism Of Lyoluminescencementioning

confidence: 99%

Lyoluminescence: A theoretical approach

2000

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When strongly energized halide or organic crystals are dissolved in a liquid solvent ͑like water͒, light is emitted as a result of a recombination process. This phenomenon is called lyoluminescence. The emitted light intensity, called the lyoluminescent intensity, depends on a class of factors like radiation dose, probability of radiative recombination, rate of dissolution in the solvent, etc. Combining some of these numerous effects we develop a nonlinear differential equation and analyze it by a dynamical system analysis as well as by exact numerical integration. The corresponding plot of the theoretical lyoluminescent intensity versus time graph, called the glow curve ͑Fig. ͑1͒͒, matches very well with the shape of the experimental curve ͑Fig. ͑2͒͒ for a vast range of characteristic values of the controlling parameters.

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“…A variety of solid substances can store X-ray or γ-ray irradiation energy in the form of trapped electrons and holes. , This stored energy can be released by thermal (thermoluminescence) and optical stimulation (photostimulated luminescence) or by the dissolution of irradiated solid in a solvent; e.g., in pure deoxygenated water, the stored energy is partly converted to light by the recombination of irradiation-separated electrons and holes at the solid/solution interface of dissolving solid powder. In general, lyoluminescence (LL) is defined as a process where the dissolution of a solid produces light emission. , The solids characterized by a higher activation energy for the recombination of trapped electrons and holes in comparison with kT are usually called X- or γ-ray storage phosphors and can be used in, for example, dosimetry and X-ray imaging techniques …”

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confidence: 99%

Mechanism and Analytical Applicability of Luminol-Specific Extrinsic Lyoluminescence of UV-Irradiated Potassium Peroxodisulfate

et al. 1997

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Luminol shows strong chemiluminescence with an emission maximum at ∼430 nm in the presence of sulfate radicals. Sulfate radicals were produced by the dissolution of UV-irradiated potassium peroxodisulfate powder in aqueous luminol solutions. The UV irradiation at 6.7 eV produces a solid solution of sulfate radical in potassium peroxodisulfate by rupturing −O−O− bonds, as in solution, but now the solid solution is stable in a time scale of years in dryness. In the present system, luminol chemiluminescence is produced via several parallel pathways having a common triggering step, one-electron oxidation of luminol monoanion by sulfate or hydroxyl radical. Present chemiluminescence allows sensitive luminol detection from picomolar to micromolar level with a linear response over 5 orders of magnitude, after which luminescence is too strong for single-photon counting. The high sensitivity of luminol detection allows us to propose extrinsic lyoluminescence of potassium peroxodisulfate as a new and simple method for detection step of bioaffinity assays using luminol or isoluminol derivatives as label compounds.

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Lyoluminescence from gamma-irradiated NaCl

Cited by 4 publications

References 43 publications

Dosimetry of Charged Particles Using Lyoluminescence Method

Dosimetry of Charged Particles Using Lyoluminescence Method

Lyoluminescence: A theoretical approach

Mechanism and Analytical Applicability of Luminol-Specific Extrinsic Lyoluminescence of UV-Irradiated Potassium Peroxodisulfate

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