Observations regarding the build-up effect in radiophotoluminescence of silver-doped phosphate glasses

McKeever, S.W.S.; Sholom, S.; Shrestha, Nishan

doi:10.1016/j.radmeas.2019.02.009

Cited by 46 publications

(41 citation statements)

References 27 publications

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“…Meanwhile in the GPN o glass, the clusters are formed from the very first X‐rays doses while a weak emission of Ag 2+ is measured. As observed in Figure D, the intensity increasing feature in the first tens or hundreds of micrometers, depending of the X‐rays dose, correlatively goes hand to hand with an increase of a competitive absorption phenomenon which could be related to the presence of non‐luminescent electron traps such as Ag 0 (Figure B) …”

Section: Discussionmentioning

confidence: 73%

“…As observed in Figure 5D, the intensity increasing feature in the first tens or hundreds of micrometers, depending of the X-rays dose, correlatively goes hand to hand with an increase of a competitive absorption phenomenon which could be related to the presence of non-luminescent electron traps such as Ag 0 ( Figure 3B). 4,8 Ag + + h XRay → Ag 2+ + Ag 0 (1)…”

Section: Structural Impact On X-ray Irradiated Phosphate Photosensimentioning

confidence: 99%

“…Nowadays it is considered as a reliable radiation dosimetry technique . Extensively described in the literature, the RPL mechanism in silver‐doped glass remains a hot topic as no clear unanimity has been established concerning the nature of the centers responsible for the luminescence properties. During the irradiation process, using ionizing radiations such as X‐Ray or gamma radiations, exciton pairs are released into the glass matrix and then are proposed to recombine with the Ag + silver ions, leading to the formation of electron and hole trapped silver species, such as Ag 0 and Ag 2+ , respectively .…”

Section: Introductionmentioning

confidence: 99%

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Silver centers luminescence in phosphate glasses subjected to X‐Rays or combined X‐rays and femtosecond laser exposure

Guerineau

Cova

Petit

et al. 2019

Int J of Appl Glass Sci

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The generation of silver species has been investigated in silver‐containing sodo‐gallo‐phosphate glasses subjected to X‐ray irradiations. Radioluminescence spectroscopy has evidenced the presence of isolated and paired silver ions. The proportion of silver pairing is found dominant in ortho‐phosphate glass compositions, compared to poly‐phosphate counterparts. The phosphate glass network is reported to have a decisive impact on X‐Ray photosensitivity and the formation of luminescent silver species, namely Ag2+ hole trap silver ions and Agmx+ silver clusters. The subsistence of femtosecond laser produced silver luminescent structures under X‐Ray irradiation has been demonstrated.

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Section: Discussionmentioning

confidence: 73%

Section: Structural Impact On X-ray Irradiated Phosphate Photosensimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Silver centers luminescence in phosphate glasses subjected to X‐Rays or combined X‐rays and femtosecond laser exposure

Guerineau

Cova

Petit

et al. 2019

Int J of Appl Glass Sci

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“…It also indicates that the signal strongly increases with heat treatment. (30)(31)(32) This phenomenon is called build-up. The inset indicates the dose response functions with and without heat treatment prior to measurement.…”

Section: Resultsmentioning

confidence: 99%

TSL/OSL/RPL Automated and Integrated Measurement System (TORAIMS)

Okada¹,

Hirasawa²,

Yanagida³

et al. 2021

Sensors and Materials

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Thermally stimulated luminescence (TSL), optically stimulated luminescence (OSL), and radio-photoluminescence (RPL) are radiation-induced luminescence phenomena, and they are widely used for radiation dosimetry today. Despite their successful applications, the R&D of conventional and new phosphor materials is still actively performed in a wide range of research fields from basic science to application. Although these phenomena are considered to be different, they share common physical processes such as the generation, trapping, and transfer of electronic charges. In order to have a deeper look into these phenomena, it is important to comprehensively characterize those of a single material. For this, we have constructed a prototype TSL/OSL/RPL automated and integrated measurement system (TORAIMS), and then the system performance has been studied. The system offers automated and integrated measurement of several different TSL, OSL, and RPL properties, and it is also designed to cover many different phosphor materials having a wide variety of spectroscopic properties.

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“…Estimation of absorbed doses is possible by using the intensity of orange luminescence. The glass has some limitations as it gives real absorbed dose measurements after several hours of exposure due to its buildup phenomenon [4][5][6] . RPL intensity of irradiated glass is found to be increased with elapsed time after irradiation.…”

Section: Introductionmentioning

confidence: 99%

Study of Radiophotoluminescence of Eu Doped CaSO4 Phosphor for Gamma Dosimetric Applications

2020

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CaSO4:Eu phosphor is synthesised by acid distillation method with varying synthesis parameters for studying its Radiophotoluminescence (RPL) properties for gamma absorbed dose measurements. Five phosphor samples are prepared by varying quantity of solvent, distillation temperature and reaction time. XRD, SEM, particle size analysis and photoluminescence studies are carried out. The characterisation study shows polycrystalline luminescent particles of average size varying from 35 μm to 55 μm. Characteristic emission of Eu3+ is observed around 590, 615 and 620 nm at 242 nm excitation. Gamma dose response of maximum Eu3+ PL intensity sample is studied in the range 10 cGy to 1000 cGy using Co-60 source. Gamma radiation exposure induces conversion of Eu3+ to Eu2+ giving luminescence at 385 nm with 320 nm excitation. Repetitive measurements of gamma exposed samples are carried out and no significant fading is observed within one week of post-irradiation. The phosphor has the potential to be used for gamma dosimetry.

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Observations regarding the build-up effect in radiophotoluminescence of silver-doped phosphate glasses

Cited by 46 publications

References 27 publications

Silver centers luminescence in phosphate glasses subjected to X‐Rays or combined X‐rays and femtosecond laser exposure

Silver centers luminescence in phosphate glasses subjected to X‐Rays or combined X‐rays and femtosecond laser exposure

TSL/OSL/RPL Automated and Integrated Measurement System (TORAIMS)

Study of Radiophotoluminescence of Eu Doped CaSO4 Phosphor for Gamma Dosimetric Applications

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