Gamma effect on track properties of PADC detector

Sinha, Dipak; Swu, Toka; Tripathy, S.P.; Mishra, Rosaline; Dwivedi, K.K.

doi:10.1016/s1350-4487(03)00129-x

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…SSNTDs are greatly influenced by gamma radiation and in this regard a lot of work on various track detectors has been reported by several authors. [7][8][9][10][11][12][13][14][15][16][17][18] It has been mostly observed that etch-rates increases upon gamma exposure. This increase in etch rates is attributed to scissioning of the molecular chains of the track detectors, which reduces their average molecular weight.…”

Section: Introductionmentioning

confidence: 99%

Gamma Irradiation Effects on Track Properties of PADC-American Acrylics Track Detector

Sinha

2012

E-Journal of Chemistry

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Gamma irradiation effects on track properties of Polyallyl Diglycol Carbonate (PADC) track detector (PADC-American Acrylics) are studied in the dose range of 101-106Gy. It is observed that due to gamma exposure the bulk and track-etch rates of the detector increases. This increase in both etch-rates is more pronounced in post gamma exposed PADC detectors. The etch-rate ratio (S) for both pre and post-gamma exposed detectors decreases with increasing etching temperature at the dose of 106Gy. At a higher etching temperature of 70ºC, the etch rates ratio becomes almost equal for post gamma exposed detector. Etching efficiency of the detector is found to be much higher when exposed to gamma radiation. However it is observed that at the etching temperature of 70ºC, etching efficiency for both pre and post-gamma exposed samples tends to become almost equal to the pristine one.

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Section: Introductionmentioning

confidence: 99%

Gamma Irradiation Effects on Track Properties of PADC-American Acrylics Track Detector

Sinha

2012

E-Journal of Chemistry

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“…The environment present during irradiation can significantly affect the properties of the polymeric material. For example, the presence of 0 2 or air during irradiation produces free radicals that are often rapidly converted to peroxide radicals [20][21][22][23] .…”

Section: Introductionmentioning

confidence: 99%

Use of Cr-39 Polymer for Radiation Dosimetry

Tayyeb¹

2011

eng

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This paper discusses the results of investigations of beta and gamma radiation induced thermoluminescence (TL) of CR-39 polymer. As the material is cheap and easily available, the feasibility of CR-39 being used for personal dosimetry is worth investigating. Samples from CR-39 of dimensions 3mm × 3mm were classified into two main groups. The first group was irradiated with gamma rays from 137 Cs source, while the second group was exposed to beta particles from 90 Sr source and read for TL emission on a TLD reader, Harshaw 4500. The chips were annealed at different temperatures to find out optimum annealing temperature to get rid of the background to a maximum. Different annealing times were also studied for optimization. The heating temperatures in the TL reader were studied in a wide range so as to assess the best possible heating temperature. The possible enhancement of TL response of CR-39 exposed to gamma rays in the presence of oxygen and carbon dioxide was also studied. Dose response of CR-39 exposed to gamma rays in the presence of oxygen is better than that in the presence of carbon dioxide. The response of the exposed polymer in the presence of carbon dioxide is found to be better than that in the presence of air.

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“…The applications of these detectors are dependent on the type of radiation they are exposed to, since the responses of track detectors are different for different radiation. It is now an established fact that nuclear track detectors are greatly influenced by gamma radiation, and in this regard a lot of work on various track detectors has been reported by several authors (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). It has been mostly observed that etch rates increase upon gamma exposure.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of gamma radiation effects on track properties of different PADC detectors

Sinha

2009

Radiation Effects and Defects in Solids

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Track properties of gamma-irradiated polyallyldiglycol carbonate (PADC) detectors (Homalite, Pershore and Trastrack) are studied in the dose range of 10 1 -10 6 Gy. Results show that the bulk and track etch rates of all three types of PADC detector increase at doses higher than 10 4 Gy. This increase is more pronounced in post-gamma exposed detectors. The change in etch rate ratio (S) for post-gamma exposed PADC-Homalite detectors is more significant when compared with the other detectors. The critical angle for etching shows that etching at a low temperature of 60 • C is more effective, and the critical angle value is decreased to a significant extent for all three types of PADC detectors. Etching efficiency of post-gamma exposed samples is found to be much higher than the pre-gamma exposed sample at the highest dose of 10 6 Gy. When compared, it was found that of the three PADC detectors, PADC-Homalite detectors seem to be more sensitive to gamma irradiation.

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Gamma effect on track properties of PADC detector

Cited by 6 publications

References 10 publications

Gamma Irradiation Effects on Track Properties of PADC-American Acrylics Track Detector

Gamma Irradiation Effects on Track Properties of PADC-American Acrylics Track Detector

Use of Cr-39 Polymer for Radiation Dosimetry

A comparative study of gamma radiation effects on track properties of different PADC detectors

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