Characterization of chemical and optical modifications induced by proton beams in CR-39 detectors

Lounis-Mokrani, Z.; Fromm, M.; Barillon, Rémi; Chambaudet, A.; Allab, M.

doi:10.1016/s1350-4487(03)00211-7

Cited by 76 publications

(22 citation statements)

References 13 publications

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“…From this figure, it is noticed that the absorption edge is shifted towards the higher wavelength, which indicates a decrease in band gap energy. This result is comparable to the result obtained with the same materials irradiated with protons in the investigated dose range (< 10 5 Gy) (Lounis- Mokrani et al, 2003). Furthermore, it is obvious from these curves that the gamma irradiation enhances the UV absorbance of the polymer, which is a direct consequence of the formation of the new chemical species (chromophoric groups).…”

Section: Bulk Etch Rate Determinationsupporting

confidence: 84%

“…5 and the identification of absorption bands is given previously (Lounis-Mokrani et al, 2003). No important modifications are observed between the virgin and irradiated spectra, except for the 25,000 Gy which shows some important modifications such as disappearance of the C&O band around 1735 cm −1 and C-O-C band around 1100 cm −1 and the appearance of a OH peak around 3500 cm −1 .…”

Section: Ftir Resultsmentioning

confidence: 82%

“…In the present state of our knowledge on the latent track chemical structure in CR-39, it has been confirmed by UV-visible and FTIR spectroscopies that CO 2 and OH groups were produced in ions or low LET irradiated CR-39 materials (Chong et al, 1997;Malek and Chong, 2002;Yamauchi et al, 2003a,b;Lounis-Mokrani et al, 2003). It has also been reported that the observed variation in the OH group concentrations with deposited dose could be helpful for the understanding of the track formation process as well as the etching process along the latent track in CR-39 materials.…”

Section: Introductionmentioning

confidence: 79%

“…The diethylene glycol (DEG) has been the most appropriate residual component for this study because of its chemical properties which make easy its separation from the residual etching solution. The DEG concentrations have been estimated from UV absorbance using a pre-calibrated curve (DEG concentration versus UV absorbance) (Lounis-Mokrani et al, 2004). Fig.…”

Section: Uv-visible Resultsmentioning

confidence: 99%

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Effects of high gamma doses on the bulk etch rate of two grade CR-39 materials

Brahimi

Lounis-Mokrani

Imatoukene

et al. 2008

Radiation Measurements

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Section: Bulk Etch Rate Determinationsupporting

confidence: 84%

Section: Ftir Resultsmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 79%

Section: Uv-visible Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Effects of high gamma doses on the bulk etch rate of two grade CR-39 materials

Brahimi

Lounis-Mokrani

Imatoukene

et al. 2008

Radiation Measurements

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“…FT-IR spectroscopy has been successfully applied to evaluate the effects of ion irradiation on polymers quantitatively [9,10,11]. Figure 3 shows reduction of relative absorbance, A/A 0 , of ether, carbonate ester and CH groups, as well as changes in absorbance, A-A 0 , of OH groups as a function of the fluence.…”

Section: Changes In Absorbance Of Ether Carbonate Ester Ch and Oh Gmentioning

confidence: 99%

Sudden Increase of the Radiation Chemical Yield for Loss of Carbonate Ester in PADC Detector where the Track Overlapping of 28 MeV Electrons Becomes Significant

Kusumoto

Mori

Kanasaki

et al. 2016

Proceedings of International Symposium on Radiation Detectors and Their Uses (ISRD2016)

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The latent track structure of 28 MeV electrons in poly(allyl diglycol carbonate), PADC, has been investigated using FT-IR spectral method. The density of ether decreases linearly with increasing the fluence. Chemical damage parameters of effective track radius, damage density and radiation chemical yield, for loss of ether are evaluated as 0.023 nm, 0.01 scissions/nm and 19 scissions/100 eV, respectively. The derived values are compared to that of previous ones from gamma ray, protons and heavy ions exposures. The density of carbonate ester and CH groups decreases above the fluence of 1.6×10 15 electrons/cm 2 , which corresponds to the critical fluence in which the track overlapping becomes significant. This implies that the carbonate ester can be lost following the damage on neighboring ether.

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Modification Induced in Makrofol BL 2‐4 Polycarbonate due to Electron Beam Irradiation

et al. 2015

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Makrofol BL 2-4 is an extrusion film based on Makrolon polycarbonate. It is different from Makrofol DE as it comprises excellent die-cutting performance combined with high light transmission and moderate light scattering properties. It is a polymeric solid-state nuclear track detector, which has many applications in various radiation detection fields. Samples from Makrofol BL sheets were irradiated using different electron beam doses ranging from 20 to 300 kGy. It is worth mentioning that this report is almost the first one dealing with this topic of material changes using Makrofol BL 2-4. The resultant effect of electron beam irradiation on the properties of Makrofol has been investigated using X-ray diffraction, intrinsic viscosity, Fourier transform infrared spectroscopy, thermogravimetric analysis, refractive index, and color difference studies. The results indicate that the electron beam irradiation in the dose range 50-200 kGy led to the dominance of cross-linking, enhancing the properties of Makrofol. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2015, 34, 21496; View this article online at wileyonlinelibrary.com.

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Characterization of chemical and optical modifications induced by proton beams in CR-39 detectors

Cited by 76 publications

References 13 publications

Effects of high gamma doses on the bulk etch rate of two grade CR-39 materials

Effects of high gamma doses on the bulk etch rate of two grade CR-39 materials

Sudden Increase of the Radiation Chemical Yield for Loss of Carbonate Ester in PADC Detector where the Track Overlapping of 28 MeV Electrons Becomes Significant

Modification Induced in Makrofol BL 2‐4 Polycarbonate due to Electron Beam Irradiation

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