Impact of electron irradiation on particle track etching response in polyallyl diglycol carbonate (PADC)
R MISHRA, S P TRIPATHY, A KULSHRESTHA, A SRIVASTAVA, S GHOSH,
K K DWIVEDI*, D T KHATHING1, M MÜLLER2 and D FINK2
Department of Chemistry; 1Department of Physics, North-Eastern Hill University, Shillong 793 003, India
2Hahn-Meitner Institute, Glienicker Strasse 100, D-14109 Berlin, Germany
*Corresponding Author: Arunachal University, Rono Hills, Itanagar 791 111, India
Abstract.
In the present work, attempts have been made to investigate the modification in particle track etching response of polyallyl diglycol carbonate (PADC) due to impact of 2 MeV electrons. PADC samples pre-irradiated to 1, 10, 20, 40, 60, 80 and 100 Mrad doses of 2 MeV electrons were further exposed to 140 MeV 28Si beam and dose-dependent track registration properties of PADC have been studied. Etch-rate values of the PADC irradiated to 100 Mrad dose electron was found to increase by nearly 4 times that of pristine PADC. The electron irradiation has promoted chain scissioning in PADC, thereby converting the polymer into an easily etchable polymer. Moreover, the etching response and the detection efficiency were found to improve by electron irradiation. Scanning electron microscopy of etched samples further revealed the surface damage in these irradiated PADCs.
Keywords .: 2 MeV electron; 140 MeV 28Si; PADC; dose-dependent track registration properties; bulk etch-rate; etching response; critical angle of etching; detection efficiency; scanning electron microscopy.
Pacs No.:61.80.Fe; 61.80.Jh; 81.65.Cf; 61.82.Pv
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