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Nanoscale Track Diameter and Hydrogen Yield: Dependence upon Charge State of Incident Ion on Polystyrene
Department of Applied Sciences, Chitkara Institute of Engineering and Technology, Chandigarh, India
Department of Physics, RBS College, Agra, India
Department of Physics, Kurukshetra University, Kurukshetra, India
Department of Physics, Kurukshetra University, Kurukshetra, India
Inter University Accelerator Centre, New Delhi, India
Inter University Accelerator Centre, New Delhi, India
Department of Physics, Indian Institute of Technology, New Delhi, India
Department of Physics, Punjabi University, Patiala, India
- 1 Department of Applied Sciences, Chitkara Institute of Engineering and Technology, Chandigarh, India
- 2 Department of Physics, RBS College, Agra, India
- 3 Department of Physics, Kurukshetra University, Kurukshetra, India
- 4 Department of Physics, Kurukshetra University, Kurukshetra, India
- 5 Inter University Accelerator Centre, New Delhi, India
- 6 Inter University Accelerator Centre, New Delhi, India
- 7 Department of Physics, Indian Institute of Technology, New Delhi, India
- 8 Department of Physics, Punjabi University, Patiala, India
World Journal of Condensed Matter Physics·Volume 03 (2013)·Pages 95–101·Published 27 February 2013·DOI10.4236/wjcmp.2013.31016
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Abstract
The study of radiation damage of high- molecular weight substances due to MeV ion interactions is of interest for engi neering and scientific applications. In the present study polystyrene (PS) was irradiated with 107 Ag ions of three diffe rent charge states (q) 11 + , 14 + and 25 + and of 130 MeV energy. The emission of hydrogen from PS was monitored as a function of the incident ion fluence. The experimental results showed that the hydrogen depletion per incident ion from PS varies as q n , where n was found to be 2.1 as compared to the value 2.7 to 3.0 reported in the literature. Radii of the nanometric damaged zones or ion tracks formed were analyzed from the slope of the hydrogen depletion versus ion fluence curves as a function of charge state of incident ion. These have values between 3.2 - 6.8 nm. These radii were found to depend upon the charge state of the incident ion and vary as q m , where m has the value 0.9.
KeywordsPolystyreneHeavy IonsIon FluenceHydrogen Depletion Cross-SectionTrack Radius
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