Trivalent Ions and Their Impacts on Effective Conductivity at 300 K and Radio-Protective Behaviors of Bismo-Borate Glasses: A Comparative Investigation for Al, Y, Nd, Sm, Eu

We aimed to determine the contribution of various trivalent ions like Al and rare-earths (Y, Nd, Sm, Eu) on resistance behaviors of different types of bismo-borate glasses. Accordingly, eight different bismuth borate glasses from the system: 40Bi2O3–59B2O3–1Tv2O3 (where Tv = Al, Y, Nd, Sm, and Eu) and three glasses of (40Bi2O3–60B2O3; 37.5Bi2O3–62.5B2O3; and 38Bi2O3–60B2O3–2Al2O3) compositions were extensively investigated in terms of their nuclear attenuation shielding properties, along with effective conductivity and buildup factors. The Py-MLBUF online platform was also utilized for determination of some essential parameters. Next, attenuation coefficients, along with half and tenth value layers, have been determined in the 0.015 MeV–15 MeV photon energy range. Moreover, effective atomic numbers and effective atomic weight, along with exposure and energy absorption buildup factors, were determined in the same energy range. The result showed that the type of trivalent ion has a direct effect on behaviors of bismo-borate glasses against ionizing gamma-rays. As incident photon energy increases, the effective thermal conductivity decreases rapidly, especially in the low energy range, where photoelectric effects dominate the photon–matter interaction. Sample 8 had the minimum heat conductivity at low photon energies; our findings showed that Eu-reinforced bismo-borate glass composition, namely 40Bi2O3–59B2O3–1Eu2O3, with a glass density of 6.328 g/cm3 had superior gamma-ray attenuation properties. These outcomes would be useful for the scientific community to observe the most suitable additive rareearth type and related glass composition for providing the aforementioned shielding properties, in terms of needs and utilization requirements.

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Analysis of some Earth, Moon and Mars samples in terms of gamma ray energy absorption buildup factors: Penetration depth, weight fraction of constituent elements and photon energy dependence

Radiation Physics and Chemistry ◽

10.1016/j.radphyschem.2010.10.001 ◽

2011 ◽

Vol 80 (3) ◽

pp. 354-364 ◽

Cited By ~ 7

Author(s):

Murat Kurudirek ◽

Bekir Dogan ◽

Yüksel Özdemir ◽

Anderson Camargo Moreira ◽

Carlos Roberto Appoloni

Keyword(s):

Penetration Depth ◽

Energy Absorption ◽

Energy Dependence ◽

Photon Energy ◽

Gamma Ray ◽

Weight Fraction ◽

Constituent Elements ◽

Buildup Factors

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Influence of Bi2O3/WO3 substitution on the optical, mechanical, chemical durability and gamma ray shielding properties of lithium-borate glasses

Ceramics International ◽

10.1016/j.ceramint.2020.10.109 ◽

2020 ◽

Author(s):

Salavadi Stalin ◽

D.K. Gaikwad ◽

M.S. Al-Buriahi ◽

Ch Srinivasu ◽

Shaik Amer Ahmed ◽

...

Keyword(s):

Gamma Ray ◽

Chemical Durability ◽

Borate Glasses ◽

Lithium Borate ◽

Shielding Properties

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Gamma-rays from SS433: evidence for periodicity

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stz559 ◽

2019 ◽

Vol 485 (2) ◽

pp. 2970-2975 ◽

Cited By ~ 8

Author(s):

Kajwan Rasul ◽

Paula M Chadwick ◽

Jamie A Graham ◽

Anthony M Brown

Keyword(s):

Energy Range ◽

Photon Energy ◽

Gamma Rays ◽

Gamma Ray ◽

Temporal Analysis ◽

Photon Energy Range ◽

X Ray ◽

Relativistic Jet ◽

Gamma Ray Emission

ABSTRACT In this paper we present our study of the gamma-ray emission from the microquasar SS433. Integrating over 9 yr of Fermi-LAT Pass 8 data, we detect SS433 with a significance of ∼13σ in the 200 to 500 MeV photon energy range, with evidence for an extension in the direction of the w1 X-ray ‘hotspot’. A temporal analysis reveals evidence for modulation of SS433’s gamma-ray emission with the precession period of its relativistic jet. This suggests that at least some of SS433’s gamma-ray emission originates close to the object rather than from the jet termination regions.

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Impact of H.E.S.S. Lidar profiles on Crab Nebula data

EPJ Web of Conferences ◽

10.1051/epjconf/201919701001 ◽

2019 ◽

Vol 197 ◽

pp. 01001 ◽

Cited By ~ 1

Author(s):

Justine Devin ◽

Johan Bregeon ◽

Georges Vasileiadis ◽

Yves Gallant

Keyword(s):

Energy Range ◽

Photon Energy ◽

Gamma Ray ◽

Crab Nebula ◽

Systematic Errors ◽

High Energy ◽

Atmospheric Composition ◽

Direct Impact ◽

Energy Gamma ◽

The Crab Nebula

The H.E.S.S. experiment in Namibia is a high-energy gamma-ray telescope sensitive in the energy range from 30 GeV to a several tens of TeV, that uses the atmospheric Cherenkov technique to detect showers developed within the atmosphere. The elastic lidar, installed on the H.E.S.S. site, allows to reduce the systematic errors related to the atmospheric composition uncertainties thanks to the estimation of the extinction profile for the Cherenkov light (300-650 nm). The latter has a direct impact on the reconstructed parameters, such as the photon energy and the source flux. In this paper we report on physics results obtained on the Crab Nebula spectrum using the lidar profiles obtained at the H.E.S.S. site.

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Instruments optimizations for low energy Gamma-ray detection

EPJ Web of Conferences ◽

10.1051/epjconf/201920901044 ◽

2019 ◽

Vol 209 ◽

pp. 01044

Author(s):

Gonzalo Rodriguez ◽

Aldo Morselli

Keyword(s):

Energy Range ◽

Photon Energy ◽

Chemical Evolution ◽

Energy Resolution ◽

Gamma Ray ◽

Supernova Explosion ◽

Low Energy ◽

Previous Generation ◽

Energy Gamma ◽

Better Than

There is an experimental gap in the study of the non-thermal universe in the photon energy range from 0.3 to 100 MeV. We have analyzed the performance of a detector with unprecedented sensitivity, angular and energy resolution and combined with polarimetric capability to study of the most powerful Galactic and extragalactic sources and with a line sensitivity in the MeV energy range two orders of magnitude better than previous generation of instruments that can determine the origin of key isotopes fundamental for the understanding of supernova explosion and the chemical evolution of our Galaxy.

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Physics of Reflective Optics for the Soft Gamma-Ray Photon Energy Range

Physical Review Letters ◽

10.1103/physrevlett.111.027404 ◽

2013 ◽

Vol 111 (2) ◽

Cited By ~ 28

Author(s):

Mónica Fernández-Perea ◽

Marie-Anne Descalle ◽

Regina Soufli ◽

Klaus P. Ziock ◽

Jennifer Alameda ◽

...

Keyword(s):

Energy Range ◽

Photon Energy ◽

Gamma Ray ◽

Photon Energy Range ◽

Reflective Optics

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Study of Gamma Ray Exposure Buildup Factor for Some Ceramics with Photon Energy, Penetration Depth and Chemical Composition

Journal of Ceramics ◽

10.1155/2013/721606 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 5

Author(s):

Tejbir Singh ◽

Gurpreet Kaur ◽

Parjit S. Singh

Keyword(s):

Silicon Carbide ◽

Chemical Composition ◽

Penetration Depth ◽

Photon Energy ◽

Gamma Ray ◽

Magnesium Diboride ◽

Mean Free Path ◽

Buildup Factor ◽

Fitting Method ◽

Buildup Factors

Gamma ray exposure buildup factor for some ceramics such as boron nitride (BN), magnesium diboride (MgB2), silicon carbide (SiC), titanium carbide (TiC) and ferrite (Fe3O4) has been computed using five parametric geometric progression (G.P.) fitting method in the energy range of 0.015 to 15.0 MeV, up to the penetration of 40 mean free path (mfp). The variation of exposure buildup factors for all the selected ceramics with incident photon energy, penetration depth, and chemical composition has been studied.

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Impact of the gamma and neutron attenuation behaviors on the functionally graded composite materials

Physica Scripta ◽

10.1088/1402-4896/ac41ef ◽

2021 ◽

Author(s):

Uğur Gökmen ◽

Zübeyde Özkan ◽

Sema Bilge Ocak

Keyword(s):

Composite Material ◽

Composite Materials ◽

Energy Range ◽

Gamma Ray ◽

Effective Conductivity ◽

Effective Atomic Number ◽

Mean Free Path ◽

Functionally Graded ◽

Neutron Shielding ◽

Functionally Graded Composite

Abstract Gamma-ray and neutron shielding properties of the AA6082 + TiO2 (0-50wt.%) functionally graded composite materials (FGCMs) were investigated using the PSD software. The values of the mean free path (MFP), half-value layer (HVL), linear attenuation coefficients (LAC), mass attenuation coefficient (MAC), tenth-value layer (TVL), exposure buildup factors (EBF), effective atomic number (Zeff), effective conductivity (Ceff), and fast neutron removal cross-sections (FNRC) were found for the energy range between 0.015–15 MeV. The increase in the TiO2 content in the AA6082 composite material has raised the values of MAC and LAC. The calculations for the EBFs were carried out using the G-P fitting method for the energy range between 0.015–15 MeV and penetration depth of up to 40 mfp. The results revealed that HVL values ranged between 0.01-0.116 cm, TVL values ranged between 0.01-0.385 cm, FNRC values ranged between 7.918-10.017 cm-1, and Ceff values ranged between 5.67 x1010 and 9.85x1010 S/m. The AA6082 + TiO2 (50%) composite material was observed to provide the maximum photon and neutron shielding capacity since it offered the highest Zeff, MAC, and FNRC values, and the lowest HVL value. In terms of several aspects, the research is considered original. Besides contributing to several technologies including nanotechnology and space technologies, present research’s results may contribute to nuclear technology.

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