Germanium-doped optical fiber for real-time radiation dosimetry

Rahman, A.K.M. Mizanur; Zubair, H.T.; Begum, Mahbuba; Abdul-Rashid, H. A.; Yusoff, Z.; Ung, Ngie Min; Mat-Sharif, K. A.; Abdullah, Wan Rafizah Wan; Mahdiraji, Ghafour Amouzad; Amin, Yusoff Mohd; Maah, Mohd Jamil; Bradley, D.A.

doi:10.1016/j.radphyschem.2015.04.018

Cited by 29 publications

(10 citation statements)

References 16 publications

(19 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6. This setup might also be used to record both OSL and radioluminescence (RL) signals [25][26]. Whatever the sample, the typical OSL signals obtained just after the end of the radiation at different dose rates resembles that shown in Fig.…”

Section: Dosimetric Properties By Oslmentioning

confidence: 99%

Investigation of Thermoluminescence Properties of Potential Fibered-OSL Dosimeter Materials

Benabdesselam

Mady

Guttilla

et al. 2020

IEEE Trans. Nucl. Sci.

View full text Add to dashboard Cite

The luminescence properties of several doped materials are explored in many fields of application, including that of ionizing radiation dosimetry. These luminescence properties are essentially provided by the doping element. In this paper, we report TSL measurements of the trapping and recombination centers involved in the luminescence process of sol-gel derived glasses. Three doped species will be concerned: one transition metal (Cu), one rare-earth element (Ce) and a combination of both in the sol-gel silica matrix. By comparing the performances of these samples according to the criteria required for dosimetry by both TSL and OSL (sensitivity, dose-response, thermal fading), the results show that the simply doped samples really are potential candidates for fibered-OSL dosimetry.

show abstract

Section: Dosimetric Properties By Oslmentioning

confidence: 99%

Investigation of Thermoluminescence Properties of Potential Fibered-OSL Dosimeter Materials

Benabdesselam

Mady

Guttilla

et al. 2020

IEEE Trans. Nucl. Sci.

View full text Add to dashboard Cite

show abstract

“…Clearly, the ability of ionizing radiation to impart energy to individual atoms, molecules and biological cells has a profound effect on the outcome and that is why the detection is crucial in different fields, including energy, national security, emergency response, medical research and therapy, nuclear research and space exploration (Kim et al, 2019). Some radiation detectors consist of various materials such as graphene (Serry et al, 2015), tin (Sn) (Kim et al, 2019), SiC (Tripathi et al, 2019), germanium (Rahman et al, 2015) and others. In these cases, the measurements are based on the microcalorimetry of some actinides (Chavan et al, 2016), scintillation (Yanagida, 2016), thermoluminescence (Bortolin et al, 2019) or detection by photoelectric effect (Mizanur- Rahman et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Some radiation detectors consist of various materials such as graphene (Serry et al, 2015), tin (Sn) (Kim et al, 2019), SiC (Tripathi et al, 2019), germanium (Rahman et al, 2015) and others. In these cases, the measurements are based on the microcalorimetry of some actinides (Chavan et al, 2016), scintillation (Yanagida, 2016), thermoluminescence (Bortolin et al, 2019) or detection by photoelectric effect (Mizanur- Rahman et al, 2015). All these systems are characterized by being volume based, which implies that large systems are needed to carry out sufficiently reliable radiation measurements (Kozlovskiy et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Reversible Ionizing Radiation Sensors Based on Carbon Nanotubes

Fontánez¹,

Machín

Cotto³

et al. 2020

American Journal of Engineering and Applied Sciences

View full text Add to dashboard Cite

Vertically Aligned Carbon Nanotubes (VA-CNTs) were grown by Chemical Vapor Deposition (CVD) on a silicon substrate with alternating layers of TiN and SiO 2. VA-CNTs were exposed to X-ray radiation to study the change in resistivity later. Preliminary results show an increase in the resistivity of CNTs as a function of radiation exposure time, which means that the structure responds successfully to radiation exposure. The variation of resistivity has been associated with the presence of organic compounds that, during exposure to radiation, can generate species capable of interacting with the material by modifying its conductive properties. The first evidence indicates that the changes observed are reversible under heat treatment, which also supports the fact that it is the adsorbed organic species that, in the presence of radiation, modify the resistivity of the material and possibly allowing the material to be recyclable.

show abstract

“…3 Gedoped optical fibers can offer promising thermoluminescence (TL) and transmission capacity properties together with small physical size and modest cost. 4 According to a survey by the U.S. Department of Geology, germanium used in the manufacture of optical fibers accounts for 40−50% of all germanium products. 5 The structure of optical fiber is mainly composed of a control core, cladding and coating layers, etc.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Germanium as a critical material plays an irreplaceable role in optical fiber to promote communication due to its unique metal performance . Ge-doped optical fibers can offer promising thermoluminescence (TL) and transmission capacity properties together with small physical size and modest cost . According to a survey by the U.S. Department of Geology, germanium used in the manufacture of optical fibers accounts for 40–50% of all germanium products…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics, Kinetics Model, and Reaction Mechanism of Low-Vacuum Phosphate Reduction Process for Germanium Recovery from Optical Fiber Scraps

Zhang

Song

2018

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Germanium, because of its unique performance, has been widely used in the manufacture of optical fiber. Recycling germanium is significant because of geographical scarcity and technical barriers. In this study, a novel low-vacuum phosphate reduction process of GeO2 was proposed to recover germanium from optical fiber scraps. The thermodynamics, kinetics model, product analysis, and reaction mechanism were studied. Thermodynamic results indicated that the decomposition products were mainly the P(V) compounds Na4P2O7 and Na5P3O10, PH3, O2, and H2. The reaction order models of dα/dt = 1.44 × 108 exp(−212000/8.314T)(1 – α)3.63 min–1 can describe the kinetic results of the phosphate reduction process well. The average activation energy E̅ α located around 212 kJ mol–1. The chemical species of Ge in the condensed products were metal Ge, Ge(II), and a small amount of Ge(IV) by XPS analysis. A hydrolysis reaction followed by a nucleophilic addition–elimination mechanism can explain the decomposition of NaH2PO2. Then, a mechanism of collapse of the GeO2 octahedron by the action of PH3(g) and H2 was presented to clarify the formation of Ge and its oxides. Finally, a nucleation mechanism under low-vacuum conditions explained the distribution of condensed products. We quantitatively investigated the vacuum phosphate reduction process and can successfully guide germanium recovery from optical fiber scraps.

show abstract

Germanium-doped optical fiber for real-time radiation dosimetry

Cited by 29 publications

References 16 publications

Investigation of Thermoluminescence Properties of Potential Fibered-OSL Dosimeter Materials

Investigation of Thermoluminescence Properties of Potential Fibered-OSL Dosimeter Materials

Reversible Ionizing Radiation Sensors Based on Carbon Nanotubes

Thermodynamics, Kinetics Model, and Reaction Mechanism of Low-Vacuum Phosphate Reduction Process for Germanium Recovery from Optical Fiber Scraps

Contact Info

Product

Resources

About