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Proton dose-dependent modification in track etching response in some polymers |
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| Authors: | S P Tripathy R Mishra K K Dwivedi D T Khathing S Ghosh D Fink |
| Institution: | a Italian National Agency for Environmental Protection, ANPA, Via V. Brancati 48, Roma 00144, Italy b Arunachal University, Rono Hills, Itanagar 791 111, India c Department of Physics, North-Eastern Hill University, Shillong 793 022, India d Hahn-Meitner Institute, Glienicker Strasse 100, D-14109, Berlin, Germany |
| Abstract: | In the present work, the effect of four different doses of 62 MeV protons, on the fission fragment track etching characteristics of two polymers, viz. polycarbonate (Makrofol-N (MFN)) and polyimide (PI) are studied by nuclear track technique. The bulk etch-rate of PI increased by around 30% at the highest proton dose, whereas the activation energy of etching remained almost constant for the same. A considerable increase in the bulk etch-rate of MFN was observed (75%) at the highest proton dose. The activation energy of etching of the fission fragment tracks in MFN was also found to be an inverse function of dose. |
| Keywords: | Makrofol-N Polyimide Proton irradiation Bulk etch-rate Activation energy |
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