Chemical modifications of ion irradiated polystyrene probed by optical absorption measurements | |
Zhu, ZY; Jin, YF; Liu, CL; Sun, YM; Li, CL; Hou, MD; Wang, ZG; Zhang, CH; Chen, XX; Liu, J | |
2000-05 | |
关键词 | ion irradiation polystyrene chemical modification optical absorption |
卷号 | 166 |
页码 | 621-626 |
英文摘要 | Polystyrene (PS) films are irradiated at room temperature with 3 MeV silicon ions and 1.4 GeV argon ions to fluences ranging from 1 x 10(10) to 3 x 10(14) cm(-2). Fourier transform infrared (FTIR) specula reflection spectra and ultraviolet/ visible (UV/Vis) transmission spectra are measured to investigate the radiation-induced chemical modifications. It is found that the intrinsic absorption bands show reduction in intensity with increasing fluence and electronic energy loss, indicating the degradation of the polymeric structure. For Si ion implanted specimens, significant chemical modifications occur above about 3 x 10(13) cm(-2), corresponding to an average energy deposition of about 45 MGy. For Ar ion irradiated specimens, the critical electronic energy loss is around 0.77 keV/nm at the fluence of 5.5 x 10(12) cm(-2), corresponding to an energy deposition of about 6.4 MGy. The increase in absorbance in the UV/Vis range and a shift of the absorption edge toward the visible is attributed to carbonization of the material. The results are discussed on the basis of ion fluence and energy loss. (C) 2000 Elsevier Science B.V. All rights reserved. |
会议录 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
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会议录出版者 | ELSEVIER SCIENCE BV |
会议录出版地 | PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
语种 | 英语 |
WOS研究方向 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics |
WOS记录号 | WOS:000087422200109 |
内容类型 | 会议论文 |
源URL | [http://119.78.100.186/handle/113462/58171] ![]() |
专题 | 中国科学院近代物理研究所 |
通讯作者 | Zhu, ZY |
作者单位 | Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Zhu, ZY,Jin, YF,Liu, CL,et al. Chemical modifications of ion irradiated polystyrene probed by optical absorption measurements[C]. 见:. |
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