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SR-86 polymer; IR spectra; UV spectra; optical absorption; bulk etch rate; AFM

The samples of SR-86 polymer were irradiated with¹²C⁵⁺ ions of energy 5·0 MeV/u using fluences of 10¹¹−10¹⁴ ions/cm² at NSC Pelletron in a high vacuum scattering chamber. The optical studies show an increase in absorption of UV or IR in the shorter wavelength region (250–500 nm). The study also reveals that the increase in radiation dose extends the optical absorption region to longer wavelengths. It is observed that the bulk etch rate of this polymer is enhanced after heavy ion irradiation.

H S Virk¹ G S Randhawa^{1 2} R Thangaraj^{1 3} D K Avasthi^{1 4} K Asokan^{1 4}

1. Department of Physics, Guru Nanak Dev University, Amritsar - 143 005, India
2. Department of Physics, Khalsa College, Amritsar - 143 003, India
3. Department of Applied Physics, Guru Nanak Dev University, Amritsar - 143 005, India
4. Nuclear Science Centre, P.O. Box 10502, New Delhi - 110 067, India

Published

June 1999

Manuscript received

21 December 1998