Interaction of gamma rays with some sodium phosphate glasses containing cobalt

ElBatal, F.H.; Ouis, M. A.; Morsi, Reham M.M.; Marzouk, Samir Y.

doi:10.1016/j.jnoncrysol.2009.09.030

Cited by 54 publications

(19 citation statements)

References 36 publications

(61 reference statements)

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“…It has already been reported that the energy levels of Nd 2+ ions in single crystal CaF 2 [47] show an absorption band centered at 527 nm due to 4f-5d transition of Nd 2+ ions. Similar absorption band has also been observed by Xu Other types of defects are also generated in the glass material after the gamma irradiation [18][19][20][21][22][23][24][25][26][27][28][29] such as oxygen vacancies and color centers. The generation of O − center after gamma irradiation in different doped crystal has been studied by many authors.…”

Section: Effect Of Gamma Irradiation On Optical Propertiessupporting

confidence: 64%

“…Finally, realization and interpretation of infrared spectra have been carried out according to the concept adapted by Tatre [40,41] and Condrate [42] about the independent vibrations of different groups in glass. Similar procedure has been used successfully by many authors [21][22][23][25][26][27]. It has been reported [18] that due to structural disorder or aperiodic arrangement a complete vibrational analysis in glass is not possible from an ab initio point of view and an analysis is done primarily by comparing the spectra of those glasses with crystalline phosphate for which the structures are known.…”

Section: Interpretation Of Ir Spectra Of Glassesmentioning

confidence: 99%

“…It has been established that most of the glasses produce various interesting changes in their properties, when irradiated by high energy particles or radiation such as UV, γ rays and neutrons [15][16][17][18][19][20][21][22][23][24]. The irradiation effect produces changes in the optical properties of glasses in the form of generation of some new absorption bands.…”

Section: Introductionmentioning

confidence: 99%

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Spectroscopic studies of gamma irradiated Nd doped phosphate glasses

Rai

Sekhar

Tiwari

et al. 2011

Journal of Non-Crystalline Solids

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Section: Effect Of Gamma Irradiation On Optical Propertiessupporting

confidence: 64%

Section: Interpretation Of Ir Spectra Of Glassesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spectroscopic studies of gamma irradiated Nd doped phosphate glasses

Rai

Sekhar

Tiwari

et al. 2011

Journal of Non-Crystalline Solids

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“…The shoulder around 878 cm -1 is assigned to the asymmetric stretching vibration of P-O-P linkages, v as (P-O-P), while the relatively weak band around 764 cm -1 is due to the symmetric stretching vibration of that linkage, v s (P-O-P). The region below 600 cm −1 is usually assigned to the vibration of metals [14]. The broad band at about 525 -539 cm-1 may be assigned to the harmonics of P-O-P bending vibration as well as to the deformation mode of PO -group.…”

Section: Resultsmentioning

confidence: 99%

Effect of Silver Nanoparticle Addition on the Structure and Characteristics of Radio-Photoluminescence Glass Dosimeter

Rahman¹,

Ayob²,

Mohd³

et al. 2016

MJAS

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A series of silver-activated phosphate glass was prepared by melt quenching method. The effect of silver nanoparticle addition on the phosphate glass microstructure, composition and chemical characteristics was investigated using x-ray diffraction, fourier transform infrared and photoluminescence spectroscopy. Other physical property such as density was also evaluated. The density increased when the amount of silver ions were increased, due to the enhanced formation of non-bridging oxygen. In this study, we discuss the emission mechanism of two radio-photoluminescence peaks at 460 nm and 620 nm, where the electrons and holes produced by γ-irradiation a re-trapped by Ag + ions to produce Ag 0 and Ag 2+ ions respectively, when the Ag + -doped phosphate glass is exposed to γ-ray. We proposed that an emission mechanism of 460 and 620 nm radio-photoluminescence peaks with these Ag 2+ and Ag 0 ions. Furthermore, a correlation between the investigated properties and glass composition is discussed.Keywords: silver nanoparticle, optical and physical properties, radio-photoluminescence glass dosimeter Abstrak Satu siri gelas argentum-aktif fosfat telah dihasilkan menerusi kaedah peleburan. Kesan penambahan nanobahan argentum ke dalam mikrostruktur gelas fosfat, komposisi dan sifat-sifat kimia dikaji dengan menggunakan pembelauan sinar-X, penjelmaan inframerah Fourier dan spektroskopi pendarcahaya. Sifat fizikal yang lain seperti ketumpatan kacaturut dikaji. Ketumpatan kaca bertambah apabila jumlah ion-ion argentum ditingkatkan, disebabkan oleh peningkatan pembentukan oksigen tanpa-hubung. Dalam kajian ini, kami membincangkan mekanisme pemancaran oleh dua puncak radio-pendarcahaya pada jalur 460 nm dan 620 nm, di mana elektron dan lohong yang terhasil daripada sinar-γ diperangkap oleh ion -ion Ag + seterusnya menghasilkan ionion Ag 0 dan Ag 2+, apabila kaca Ag + -aktif fosfat didedahkan kepada sinar-γ. Kami turut membincangkan mekanisme pemancaran bagi setiap puncak radio-pendarcahaya pada jalur 460 dan 620 nm berdasarkan ion -ion Ag 2+ dan Ag 0 berkenaan. Tambahan lagi, hubung kait antara komposisi kaca dan sifat-sifat kaca yang terhasil turut dibincangkan.Kata kunci: nanobahan argentum, sifat fizikal and optik, dosimeter kaca radio-pendarcahaya ISSN -2506 Irman et al: EFFECT OF SILVER NANOPARTICLE ADDITION ON THE STRUCTURE AND CHARACTERISTICS OF RADIO-PHOTOLUMINESCENCE GLASS DOSIMETER 65Introduction Recent technological applications have generated more interest in the study of glasses especially oxide glasses [1 -6]. Among oxide glasses, phosphate based glasses are particularly attractive due to their ability to accommodate large concentrations of active ions without losing their useful properties of the material [1]. Phosphate glasses are relatively easy to prepare and offers a large range of compositional possibilities, which facilitates in tailoring the physical, chemical and optical properties of interest for specific technological applications [7]. In particular, embedding materials such as metal nanoparticl...

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“…The UV peaks are related to trace iron (Fe 3+ ) impurities while the visible peaks at 520, 580 and 640 nm can be attributed to the presence of octahedral (520 nm) and tetrahedral (580, 640 nm) coordination of Co 2+ ions [25]. Gamma irradiation causes minor changes in the intensities of some peaks but no new induced peaks are generated.…”

Section: Cobalt-doped Glassmentioning

confidence: 99%

Gamma Rays Interactions with Strontium Borate Glasses Doped with First-Row Transition Metal Oxides

Batal¹,

ElBatal²,

Abdelghany³

2014

TOSPECJ

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Optical and FT infrared absorption spectroscopic studies were carried out to investigate the spectral properties of prepared undoped and 3d transition metal oxides-doped-strontium borate glasses. The same measurements were repeated after gamma-irradiation of the samples with a dose of 8 Mrad (8  10 4 Gy). The undoped strontium borate glass before irradiation exhibits a broad strong UV absorption which is related to unavoidable trace iron (Fe 3+ ions) impurities contaminated within the raw materials used for the preparation of this glass. Examination of the optical spectra of TMs-doped glasses reveals extra characteristic UV-visible bands due to the respective doping 3d transition metal ions. Gamma irradiation of the undoped strontium borate glass produces induced defects within the UV and visible regions while the TMsdoped glasses reveal limited variations due to shielding effects of some TM ions in this specific host strontium borate doped glasses towards gamma irradiation.Infrared absorption spectra of the prepared glasses reveal characteristic vibrational bands due to both triangular and tetrahedral borate groups within the wavenumber range 1200-1600 cm -1 and 800-1200 cm -1 , respectively. The addition of 3d TM dopants (0.2 %) causes no distinct variations in the main IR vibrational bands because of the low level of TM ions and their housing in the glass network structure as modifiers. Also, gamma irradiation causes no changes in the number or position of the main characteristic IR vibration bands due to the quite stability of the base glass containing high content of heavy metal (Sr 2+ ) cations.

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Interaction of gamma rays with some sodium phosphate glasses containing cobalt

Cited by 54 publications

References 36 publications

Spectroscopic studies of gamma irradiated Nd doped phosphate glasses

Spectroscopic studies of gamma irradiated Nd doped phosphate glasses

Effect of Silver Nanoparticle Addition on the Structure and Characteristics of Radio-Photoluminescence Glass Dosimeter

Gamma Rays Interactions with Strontium Borate Glasses Doped with First-Row Transition Metal Oxides

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