Shielding Properties of Lead Zinc Borate Glasses

El-Kameesy, Samir Yousha; El-Ghany, Sahar Abd; Azooz, M. A.; El-Gammam, Yaser Abd Allah

doi:10.4236/wjcmp.2013.34033

Cited by 24 publications

(16 citation statements)

References 16 publications

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“…The values of Ra eq , H ex and H in in the study area are below their permissible limits, which indicates that the sediments do not pose any significant radiation hazard. Table III illustrates the comparison of the results obtained in present study with the activity concentrations of natural radionuclides reported in [12][13][14][15][16] for some African countries. The mean values of 226 Ra, 232 Th in sediment samples of the present work are higher than those of the other countries, with the exception of Nigeria and Sudan.…”

Section: Sampling and Measurementsmentioning

confidence: 94%

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Radioactivity Investigation of Sediment Samples from Beni Haroun Dam Using High-Resolution Gamma-Ray Spectroscopy

Bouhila

Benrachi

2017

Acta Phys. Pol. A

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In this study, the levels of natural and anthropogenic radioactivity in the sediment samples, collected from Beni Haroun Dam, were investigated using gamma-ray spectrometry. The results obtained for the 238 U, 232 Th series, 40 K natural element and 137 Cs anthropogenic radionuclide are discussed. To evaluate the radiological hazard of radioactivity in samples, the absorbed dose rate, the annual effective dose, the radium equivalent activity Raeq, the external and internal hazard indices Hex and Hin were calculated and presented in comparison with the data collected from different areas in the world.

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Section: Sampling and Measurementsmentioning

confidence: 94%

“…In order to obtain the information about the present levels of environmental radioactivity, various studies were carried out in many countries [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In the current work, sediment samples were collected near Beni Haroun Dam.…”

Section: Introductionmentioning

confidence: 99%

Radioactivity Investigation of Sediment Samples from Beni Haroun Dam Using High-Resolution Gamma-Ray Spectroscopy

Bouhila

Benrachi

2017

Acta Phys. Pol. A

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“…Nowadays, heavy metal oxide glasses have been used in several fields due to their favorite properties [14][15][16]. Moreover, transition metals (T M ) can be added during the preparation of the glass system to improve the optical, electrical and shielding properties of glasses [17][18][19], where the functions of the outer electron orbital in T M are very sensitive to the surrounding cations. Recently, induced optical absorption in glasses due to irradiation has encouraged the utilizing of glass in several optical technology fields.…”

Section: Introductionmentioning

confidence: 99%

Effect of gamma ray on some properties of bismuth borate glasses containing different transition metals

2020

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This work aims to study the influence of gamma irradiation on some bismuth borate glasses doped with different transition metal oxides (CuO, CoO, ZnO and CdO). The structure of the glass matrix was analyzed by Fourier transform infrared and ultraviolet-visible spectroscopy before and after gamma irradiation at doses of 1 kGy, 20 kGy and 50 kGy. Additionally, the attention is made in determining the attenuation parameters against gamma rays. Mass attenuation coefficient determined experimentally and calculated theoretically by WinXCom program, which is a significant program in the field of radiation shielding. It is found that the attenuation parameters of gamma ray have higher values of the sample without transition metal oxides and the other doped with CdO. From hardness measurements before and after irradiation, it was found that hardness increases with the addition of transition metal oxides to glass. The results of different techniques show that these glasses possess a slight effect on the network structure of the samples against gamma irradiation. So, it can be used in different applications of nuclear fields.

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“…Its consumption is around 10 billion tons per year [2]. The fact that radiation could be harmful has lead to the development of a wide variety of shields to protect against it [3]. For nuclear radiation shielding, a larger quantity of the shielding material is required; therefore, a study on the propagation of radiation flux in the shielding materials is an essential requirement for shield design [4].…”

Section: Introductionmentioning

confidence: 99%

“…(5) and (7) shows the change in Gibbs free energy of formation of boehmite and gibbsite as shown in Eqs. (2) and (3). The value of Gibbs free energy is obtained from table of standard thermodynamic values published at Chemistry-Reference web page [11]: When change in Gibbs free energy is negative, chemical reactions are spontaneous (thermodynamically favourable).…”

Section: Introductionmentioning

confidence: 99%

Influence of Al-W-B Recycled Composite Material on the Properties of High Performance Concrete

Baronins¹,

Шишкин²,

Sētiņa³

et al. 2015

Construction Science

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The aim of this study is to obtain high performance boron containing material with sufficient carrying capacity with increased porosity and lower density at the same time. The influence of the different concentrations of Al-W-B powder on the properties of the fresh and hardened HPC was investigated. In the concrete mix design, the allite containing White Portland cement CEM I 52,5 R, granite stone, sand, microsilica, on polycarboxylates based super plasticizer and Al-W-B powder were used. As a source of boron composite material (CM), previously grinded powder containing boron-tungsten fiber and aluminium matrix (CM Al-W-B) was used. Grinding was used for processing of CM Al-W-B powder.

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Shielding Properties of Lead Zinc Borate Glasses

Cited by 24 publications

References 16 publications

Radioactivity Investigation of Sediment Samples from Beni Haroun Dam Using High-Resolution Gamma-Ray Spectroscopy

Radioactivity Investigation of Sediment Samples from Beni Haroun Dam Using High-Resolution Gamma-Ray Spectroscopy

Effect of gamma ray on some properties of bismuth borate glasses containing different transition metals

Influence of Al-W-B Recycled Composite Material on the Properties of High Performance Concrete

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