A review of the biological response to ionic dissolution products from bioactive glasses and glass-ceramics

Phy-X / PSD: Development of a user friendly online software for calculation of parameters relevant to radiation shielding and dosimetry

Review on titanium and titanium based alloys as biomaterials for orthopaedic applications.

Zahlenwerte und Funktionen aus Naturwissenschaften und Technik Von Landolt-Bornstein. Neue Serie. Gesamtherausgabe: K. H. Hellwege. Gruppe II: Atom- und Molekularphysik. Band 1: Magnetische Eigenschaften freier Radikale. Von H. Fischer. Herausgeber: K. H. Hellwege und A. M. Hellwege. Pp. x + 154. (Berlin: Springer-Verlag, 1965.) 68 D.M.

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Electron Spin Resonance

Mass attenuation coefficients of glasses in the system: xBi2O3(1−x)B2O3 (x=0.30, 0.35, 0.40, 0.45 and 0.55) were determined at 356, 662, 1173 and 1332 keV photon energies using a narrow beam transmission method. Appreciable variations were observed in these coefficients due to changes in the chemical composition of glasses. These coefficients were then used to determine effective atomic numbers of glass samples, which were found to be constant with bismuth concentration and energy.

Gamma-ray attenuation coefficients in bismuth borate glasses

A comprehensive and consistent set of formulas is given for calculating the effective atomic number and electron density for all types of materials and for all photon energies greater than 1 keV The formulas are derived from first principles using photon interaction cross sections of the constituent atoms The theory is illustrated by calculations and experiments for molecules of medical and biological interest, glasses for radiation shielding, alloys, minerals and liquids

On the effective atomic number and electron density: A comprehensive set of formulas for all types of materials and energies above 1 keV

The attenuation coefficients of barium–borate–flyash glasses have been measured for γ-ray photon energies of 356, 662, 1173 and 1332 keV using narrow beam transmission geometry. The photon beam was highly collimated and overall scatter acceptance angle was less than 3°. Our results have an uncertainty of less than 3%. These coefficients were then used to obtain the values of mean free path (mfp), effective atomic number and electron density. Good agreements have been observed between experimental and theoretical values of these parameters. From the studies of the obtained results it is reported here that from the shielding point of view the barium–borate–flyash glasses are better shields to γ-radiations in comparison to the standard radiation shielding concretes and also to the ordinary barium–borate glasses.

Barium–borate–flyash glasses: As radiation shielding materials

The linear attenuation coefficient (μ) and mass attenuation coefficients ( μ ϱ ) of glasses in three systems: xPbO(1 − x)B2O3, 0.25PbO · xCdO(0.75 − x)B2O3 and xBi2O3(1 − x)B2O3 were measured at 662 keV. Appreciable variations were noted in the attenuation coefficients due to changes in the chemical composition of glasses. In addition to this, absorption cross-sections per atom were also calculated. A comparison of shielding properties of these glasses with standard shielding materials like lead, lead glass and concrete has proven that these glasses have a potential application as transparent radiation shielding.

Gamma-ray attenuation coefficients in some heavy metal oxide borate glasses at 662 keV

Spectroscopic investigations of Nd3+ doped flouro- and chloro-borate glasses

The infrared absorption spectra of PbO–Al2O3–B2O3–SiO2 glasses have been measured in the spectral range 600–4000 cm−1 before and after absorbed dose of 50 Gy, 4 kGy and 50 kGy to investigate the structural change due to irradiation The structural change due to composition has also been discussed The experimental results clearly indicate that after irradiation, a significant change in structure of lead alumino borosilicate glass network is observed It was shown that BO4 groups decreases and BO3 groups increases with the increase of Al2O3

K.S. Thind

Papers

On the effective atomic number and electron density: A comprehensive set of formulas for all types of materials and energies above 1 keV

Barium–borate–flyash glasses: As radiation shielding materials

Gamma-ray attenuation coefficients in some heavy metal oxide borate glasses at 662 keV

Spectroscopic investigations of Nd3+ doped flouro- and chloro-borate glasses

Radiation effects on PbO–Al2O3–B2O3–SiO2 glasses by FTIR spectroscopy