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DEPENDENCE OF THE CHEMICAL
ETCHING ON THE ELGAMAL, L.M.,
NADA, A.A., ABD EL-MAKSOUD, T.M. Physics
Dept., Collage of Women for Arts, Science and Education, Key words: Solid state nuclear track detectors, CR-39, Electro-chemical etching, NaOH and KOH concentrations, Bulk etching rate, Activation energy.
دراسة اعتماد الحفر الكيميائى
VB
على نوع محلول الحافز لينا محمد الجمل وعفاف عبد اللطيف ندا و ثناء محمد عبد المقصود و أحمد أحمد مرسى خلاصـــة
تعتمد دراسة الحفر الكتلى
VB على تركيز ودرجة حرارة محاليل كل من هيدروكسيد الصوديوم وهيدروكسيد
البوتاسيوم للكاشف و قد تم تغيير التركيز ودرجة الحرارة فى المدى ABSTRACT In the present study, the dependence of the bulk etching rate VB on the concentration and the temperature of both NaOH and KOH etching solutions has been studied for CR-39. The concentration and temperature have been varied in the ranges 2-11 N and 320-370 K, respectively. The application of a simple Arrhenius law of chemical reactions revealed mean activation energy of 0.788 eV when NaOH was used as etchant and 0.744 eV when KOH solution was used. VB was found to increase with increasing either concentration or temperature.
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