Measurement of bulk etch rates for poly-allyl-diglycol carbonate (PADC) and cellulose nitrate in a broad range of concentration and temperature of NaOH etching solution

Studying some properties of CR-39 detector under the effect of different gamma doses

“…These values have been found to decrease with increase in the gamma dose. The result behavior of the bulk activation energy in the present study is in agreement with the results carried out by Rana and Qureshi (2002), Awad et al (2009) and Hermsdorf et al (2007). This decrement in the values of bulk activation energies might be due to the chain-scission of the polymeric material by gamma rays (Singh and Neerja, 2007).…”

“…1 illustrates the small increase in bulk etch rate for pristine (un-irradiated samples) and irradiated samples with 10 and 50 kGy, where a large increment clears in the bulk etch rate at 100, 150, and 200 kGy. The general behavior of the bulk etch rate of pristine and irradiated samples with the increase of the etchant temperature is in agreement with the results carried out by Rana and Qureshi (2002), Awad et al (2009) and Hermsdorf et al (2007). The increment of bulk etch rate may be due to the effect of hydrolysis process where the etching cuts the carbonate link and liberates the chains in the form of poly allyl alcohol from the polymer net work (Stejny, 1987).…”

A step towards accreditation: A robustness test of etching process

“…The performance of the etching process is strictly influenced by the chemical characteristics, the concentration and temperature of the etchant (Hermsdorf et al, 2007). In our method, in order to have easily readable tracks (due to radon and its progeny alpha emissions), the following chemical etching conditions are employed: 4.5 h as etching time in a 6.0 N KOH aqueous solution at 75°C.…”

Alpha particles energy estimation from track diameter development in a CR-39 detector

“…This is because these properties are directly related to the particle range (R) in the plastic material, which is direct measure of energy. The effects of etching conditions, and detector treatment on the above parameters are now fairly understood (Malik et al, 2002;Hermsdorf et al, 2007;Tse et al, 2008;Ghanim et al, 2008;Awad et al, 2009;Malinowska et al, 2012a,b;Hermsdorf, 2012;Jain et al, 2013). The temporal track length involves an almost well defined saturation time for a particular energy value and fixed etching conditions.…”