Suitability of gafchromic EBT2 films for dosimetry of low gamma-rays

Antar, E. M.; Gafar, S. M.; El‐Ahdal, M. A.

doi:10.1504/ijlr.2014.068256

Cited by 7 publications

(4 citation statements)

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“…A com par a tive study with other dye do sim e ters is also de vel oped in our lab. We pub lished many papers in the field of ra di a tion do sim e try [2,4,7,9], in case of dyed-film do sim e try ap pli ca tions. More over, the au thor pub lished two pa pers in the field of gel dosim e try and liq uid do sim e try; re spec tively [10,11].…”

Section: Com Par I Son Be Tween Vbb/pva Films and Vbb/gel A Tin Gels mentioning

confidence: 99%

“…There are re cent stud ies on some or ganic dyes, which decolorized and bleached un der the ef fect of gamma ra di a tion [7,8] and radiochromic films [4,9]; liq uid do sim e try sys tems [10,11]. Pre vi ous stud ies have primar ily con cen trated on the ef fect of ra di a tion on the so lu tion which causes the for ma tion of tran sient ac tive spe cies such as free rad i cals, free ions and ex cited mol e cules, which can then be mon i tored by us ing op tical spec trum, elec tric spin res o nance spec tra, con ductiv ity de tec tion or some other suit able tech niques [12].…”

Section: Introductionmentioning

confidence: 99%

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Development of two dosimeters for industrial use with low doses

El-Kelany

Gafar

2017

Nucl Technol Radiat Prot

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The pres ent study in volves a com par i son be tween two do sim e try sys tems. The first sys tem depends on vic to ria blue B (in cor po rat ing poly vi nyl al co hol) as a thin-film do sim e ter. The sec ond sys tem de pends on the same dye as a liq uid do sim e ter, which is more sen si tive to gamma rays. The pre pared film/liq uid has a con sid er able sig nal that in creases upon ir ra di a tion and the in tensity of the sig nal de crease with in creas ing ra di a tion dose. The gamma ray ab sorbed dose for these do sim e ters was found to be up to 25 kGy for the thin film and 700 Gy for the liq uid form. Ra di a tion chem i cal yield, ad di tive sub stance, dose re sponse func tion, ra di a tion sen si tiv ity, also be fore and af ter-ir ra di a tion sta bil ity un der var i ous con di tions were dis cussed and stud ied.

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Section: Com Par I Son Be Tween Vbb/pva Films and Vbb/gel A Tin Gels mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of two dosimeters for industrial use with low doses

El-Kelany

Gafar

2017

Nucl Technol Radiat Prot

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“…On the other hand, this film is simple to prepare in the laboratory and consider to be a promised radiation dosimeter (El-Kelany and Gafar, 2016). A recent study on some organic dyes, which decolorized and bleached under the effect of gamma radiation (Gafar and El-Ahdal, 2014;Mahmoodi and Arami, 2008) radiochromic films (Antar et al, 2014;Gafar and El-Ahdal, 2015) and liquid dosimetry systems (Beshir et al, 2014;Eid, 2016;Rabaeh and Basfar, 2020). Previous studies have primarily concentrated on the effect of radiation on the The current issue and full text archive of this journal is available on Emerald Insight at: https://www.emerald.com/insight/0369-9420.htm solution which causes the formation of transient active species such as free radicals, free ions and excited molecules, which can then be monitored by using optical spectrum, electric spin resonance spectra, conductivity detection or some other suitable techniques (Krapfenbauer et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Development of two dosimetry systems based on basic violet dye for possible use as radiation dosimeters

Magdy

Gafar

2021

PRT

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Purpose The purpose of this research paper is to study a comparison between two dosimetry systems, both of them based on basic violet dye (BV). Design/methodology/approach The first system depends on (BV) (incorporating polyvinyl alcohol) as a thin-film dosimeter. The second system also relies on (BV) as a solution dosimeter, which is more sensitive to gamma rays. The two prepared film/solutions have a considerable signal that decreases upon irradiation and the strength of the signal decreases with increasing radiation dose. Findings The gamma ray absorbed dose for these dosimeters was found to be up to 35 kGy for films and 1 kGy for the liquid phase. All dosimetric characteristics as radiation chemical yield, additive substance, dose-response function, radiation sensitivity, also before and after-irradiation stability under various conditions were considered. Practical implications It is expected the vital role of gamma radiation on this dye in its two forms or two media. This reveals their wide applications in the field of gamma irradiation processing. Originality/value These two dosimetry systems which depend upon the same dye are safe to handle, inexpensive, available raw materials and can be applied in various dosimetry applications as mentioned above.

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“…In order to meet the requirements in the radiation processing, several dosimeters have been successfully developed and used as routine dosimetry systems for radiation processing, that is, various types of radiochromic plastic films, GafChromic Dosimetry Media, and aqueous solutions . Particularly, radiochromic films have been extensively used for dosimetry in radiation medicine .…”

Section: Introductionmentioning

confidence: 99%

A versatile radiochromic dosimeter for low‐medium gamma radiation and its application to food irradiation

Lopes

Ferreira

Franco

et al. 2017

J of Applied Polymer Sci

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This article presents a novel radiochromic film for selective detection of low-medium (0-10 kGy) gamma radiation ( 60 Co) doses. This dosimeter is based on a printed fluorescent multilayer structure comprising a paper substrate having layers of copper phthalocyanine (DY220) (a green emitter material) on the bottom, and layers of poly[2-methoxy-5(2 0 -ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) (a green-light absorber, red emitter, and radiation sensitive polymer) on the top. The effect of gamma radiation on the optical properties of DY220/MEH-PPV was described: it was observed as a strong correlation between radiation dose and fluorescent, color coordinates for CIE (1931) chromatic diagram, and Pantone color reference of the dosimeter. The rate of these changes can be altered by manipulation of top-bottom layers to represent easily the radiation dose to be determined in a wide range. This versatile dosimeter has many uses in the field of food radiation for monitoring, quality assurance, and control of the gamma radiation process.

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Suitability of gafchromic EBT2 films for dosimetry of low gamma-rays

Cited by 7 publications

References 0 publications

Development of two dosimeters for industrial use with low doses

Development of two dosimeters for industrial use with low doses

Development of two dosimetry systems based on basic violet dye for possible use as radiation dosimeters

A versatile radiochromic dosimeter for low‐medium gamma radiation and its application to food irradiation

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