Gamma irradiated soda lime silicate glasses of different origin: Isothermal light emission

Yoshimura, Elisabeth Mateus; Okuno, Emico; Suszynska, M.

doi:10.1016/s0168-583x(02)00542-6

Cited by 1 publication

(3 citation statements)

References 11 publications

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“…The enhancement of the TL signal with the addition of K supports the connection of this alkali ion with a recombination centre in the TL emission process. The speculation given by Yoshimura et al [18], however, supports our assumptions that Al 3+ ions support the formation of hole centres (recombination centres).…”

Section: Discussionsupporting

confidence: 85%

“…the glow peak position is at higher temperature, 643 K) than these created by irradiations (the lower temperature peak at 473 K). Yoshimura et al [18] in their TL studies of soda-lime silicate glasses mentioned that the TL shown at temperatures just above room temperature is related to sodium ions, as they are present in the glass matrix of all the samples, and are more mobile than potassium ions in the glass. The enhancement of the TL signal with the addition of K supports the connection of this alkali ion with a recombination centre in the TL emission process.…”

Section: Discussionmentioning

confidence: 99%

“…The chemical composition of the quaternary silicate glasses studied in this investigation is given in table 1. These materials, called 'soda-lime silicate glasses' [18], were prepared from chemically pure materials in amounts sufficient to produce a 75 g glass. Silica was introduced in the form of quartz granules of the highest grade available.…”

Section: Methodsmentioning

confidence: 99%

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Thermoluminescence of silica-based materials irradiated by thermal neutrons

Lochab¹,

Salah²,

Sandhu³

et al. 2008

J. Phys. D: Appl. Phys.

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This work describes the thermoluminescence (TL) response of silica-based materials irradiated with thermal neutrons. These materials have the compositions (mol %) (60 + x)SiO2–(30 − x)Na2O–5MgO–5Al2O3, where x = 0, 5, 10 and 15. The irradiation was carried out in the fluence range 1 × 1014 – 1 × 1017 neutron cm−2. These glassy materials gave two TL glow peaks at around 473 and 643 K. The intensity ratio of these peaks is found to vary with varying SiO2/Na2O ratios. The peak at 473 K is more prominent at the ratio SiO2/Na2O = 75/15, while the intensity of the other one at 643 K increases by decreasing the value of this ratio. The former peak is attributed to both ‘AlO4’ hole centres and non-bridging oxygen (NBO) ion centres induced by neutrons irradiation, while the latter one could be ascribed to (NBO) ion centres introduced by the network modifiers, Na+ ions. The TL response against the neutron beam fluences of the material having the ratio SiO2/Na2O = 75/15 is found to show sublinearity in the above-mentioned range of fluence (using the area under the curve method). The other features such as high sensitivity and simple glow curve structure might be good indicators for this material to be used as a dosimeter in several applications such as thermal neutrons or in food irradiation.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%