Etching characteristic studies for the detection of alpha particles in DAM–ADC nuclear track detector

Fast detection of alpha particles in DAM–ADC nuclear track detectors

“…One can be claimed that our new etching condition has high etching efficiency for the DAM-ADC detector at low alpha energy compared to the other conditions. Thus, we conclude that the new etching condition which introduced in this work becomes better than that used in previous works (i.e., El-Samman et al, 2014). This for the following reasons: Firstly, using mixture of NaOH and CH 3 OH reducing the etching time from 2.5 h to 1 h because of increasing in V B .…”

“…According to Fig. 8, an increasing in sensitivity has been occurred by using our new etching conditions relative to previous etching condition (El-Samman et al, 2014). In addition, critical angle (θ c ) was determined using Eq.…”

“…It is found that, The fierce bulk etch rates for NaOH/ethanol etchants compared to that for the 6.25 N NaOH/H 2 O etchant are due to the miscibility of ethanol with the organic etched products from etching the ADC detector (Tse et al, 2007). The optimum etching condition, 10 N NaOH with etching temperature 343 K and etching time is 2.5 h has been used successively to register alpha particles in the DAM-ADC detector with energy in the range from 1 to 5 MeV (El-Samman et al, 2014).…”

“…Variation of sensitivity with alpha particle energy for new optimum etching conditions and previous etching condition(El-Samman et al, 2014).…”

The activity concentrations of 222Rn in some groundwater wells, Najran City, Saudi Arabia

“…The de tec tors were re moved and chem i cally etched us ing a 6.25 N so lu tion of NaOH at 70 ºC for 6 h, then CR-39 de tec tors were washed with tap wa ter for 10 min and then were put in dis tilled wa ter for 10 min and then the de tec tors were left to dry. CR-39 de tec tors were counted vi su ally us ing an op ti cal mi cro scope with a power of (400X ).The ef fi ciency of the de tec tion has been de ter mined in our pre vi ous work [11]. It was noticed that the reg is tra tion ef fi ciency of the CR-39 de tector was ap prox i mately 100 %.…”