Medical radiation shielding effect by composition of barium compounds

Kim, Seon-Chil; Dong, Ke; Chung, Woon-Kwan

doi:10.1016/j.anucene.2012.04.014

Cited by 57 publications

(23 citation statements)

References 10 publications

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“…El criterio para la selección de los elementos y compuestos atenuadores es el peso atómico; teniendo como referente el elemento atenuador de mayor uso, el plomo (Z=82 y densidad de 11,36 g/cm 3 ). Con estos criterios se evaluaron los coeficientes de atenuación de compuestos metálicos con átomos de alto número atómico (Z), tales como: óxido de bario (BaO), óxido de bismuto (Bi 2 O 3 ), óxido de tungsteno (WO 2 ) y sulfato de bario (BaSO 4 ).…”

Section: Métodounclassified

“…Para la presente simulación se emplearon las tablas 1, 2, 3 y 4 del NIST: Tables of X-Ray Mass Attenuation Coefficients and Mass Energy-Absorption Coefficients from 1 keV to 20 MeV for Elements Z = 1 to 92 and 48 Additional Substances of Dosimetric Interest Mixtures and compounds [3]. Para los elementos tabulados en la tabla 3 del National Institute of (2) Los μ/ρ dependen en gran medida de los valores teóricos de la sección eficaz total por átomo, σ tot , la cual está relacionada con μ/ρ según la expresión:…”

Section: Procedimiento Con Las Bases De Datos Del Nistunclassified

“…Estas opciones de materiales presentan alta viabilidad económica en la medida en que el material atenuador se disponga de manera adecuada para aumentar la eficiencia del blindaje con baja cantidad de material atenuador. Existen mezclas de bario, tugsteno, bismuto, silicio, molibdeno, caucho y silicio, de espesor equivalente a 0.3 mm de plomo que pueden ofrecer una capacidad de blindaje satisfactoria con un empaquetamiento de 30 % y una porosidad mayor al 20 % [3].…”

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“…Figura 1. Atenuación de una hoja de bario comparada con la de una hoja de plomo de iguales espesores [3].…”

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Materiales libres de plomo para atenuación de radiaciones ionizantes en protección

Mayorga

Jiménez²,

Salazar³

2014

Ingenium Rev. fac. ing.

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Section: Métodounclassified

Section: Procedimiento Con Las Bases De Datos Del Nistunclassified

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“…Figura 1. Atenuación de una hoja de bario comparada con la de una hoja de plomo de iguales espesores [3].…”

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Materiales libres de plomo para atenuación de radiaciones ionizantes en protección

Mayorga

Jiménez²,

Salazar³

2014

Ingenium Rev. fac. ing.

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“…This material was proposed as a shielding material against gamma radiation for buildings. Shielding aprons were manufactured from barium sulfate as a potential substitute for the lead aprons used most commonly for medical radiation shielding in [2]. Especially medical and industrial applications of gamma radiation require large amount of shielding materials.…”

Section: Introductionmentioning

confidence: 99%

Shielding of Gamma Radiation by Using Porous Materials

Gedik

Baytaş

2015

Acta Phys. Pol. A

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In this study, the gamma radiation attenuation was investigated for different composite metallic foams, soil and standard sand samples. Gamma transmission technique with narrow beam geometry, Co-60 radiation source were used in experimental studies. The measurements were used to calculate the linear attenuation coefficients and porosities of these materials. The results were compared according to radiation attenuation and porosity distribution of porous media. The metallic foams had large and non-homogeneous porosity values, therefore sand and soil showed better radiation attenuation property. However, the saturated silica foam had large ability of gamma ray attenuation as well as dry soil.

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Preparation and properties of novel, flexible, lead‐free X‐ray‐shielding materials containing tungsten and bismuth(III) oxide

Chai

Tang

et al. 2015

J of Applied Polymer Sci

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Novel, flexible, lead-free X-ray-shielding composites were prepared with a high-functional methyl vinyl silicone rubber (VMQ) matrix with W and Bi 2 O 3 as filler materials. To verify the advanced properties of the lead-free material, composites with the same mass fraction of PbO were compared. With the X-ray energy ranging from 48 to 185 keV, the W/Bi 2 O 3 /VMQ composites exhibited higher X-ray-shielding properties. As the filler volume fraction decreased, the tensile strength, elongation, tear strength, and flexibility of the W/Bi 2 O 3 /VMQ composites increased. The Shore hardness of the W/Bi 2 O 3 /VMQ composites had a maximum value of 46.6 HA and was still very flexible. With decreasing filler volume fraction, the water-vapor transmission performances of the W/ Bi 2 O 3 /VMQ composites increased, and the W/Bi 2 O 3 /VMQ composites also showed better water-vapor permeability. The heat-transfer properties of the W/Bi 2 O 3 /VMQ composites increased with increasing W content, and when the W content exceeded 70 wt %, the thermal conductivity of the W/Bi 2 O 3 /VMQ material was about 70.45% higher than that of the PbO/VMQ composite. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43012.

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Medical radiation shielding effect by composition of barium compounds

Cited by 57 publications

References 10 publications

Materiales libres de plomo para atenuación de radiaciones ionizantes en protección

Materiales libres de plomo para atenuación de radiaciones ionizantes en protección

Shielding of Gamma Radiation by Using Porous Materials

Preparation and properties of novel, flexible, lead‐free X‐ray‐shielding materials containing tungsten and bismuth(III) oxide

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