Chemical modifications of polystyrene under swift Ar ion irradiation: A study of the energy loss effects
文献类型：会议论文
| 作者 | Zhu, ZY; Jin, YF; Liu, CL; Sun, YM; Hou, MD; Zhang, CH; Wang, ZG; Liu, J; Chen, XX; Li, BQ |
| 出版日期 | 2000-06 |
| 关键词 | swift Ar ion irradiation polystyrene chemical modification electronic energy loss |
| 卷号 | 169 |
| 页码 | 83-88 |
| 英文摘要 | Polystyrene (PS) films of about 53 mu m in thickness are stacked together and are irradiated with 1.37 GeV Ar ions at room temperature to fluences ranging from 1.1 x 10(10) to 5.5 x 10(12) cm(-2). The radiations induced chemical changes are studied by the Fourier transform infrared (FTIR) and ultraviolet/visible (UV/Vis) spectroscopies. It is found that the material undergoes serious degradation under irradiation and the chemical modifications depend strongly on the electronic energy loss. The main chains of PS as well as the phenyl ring are destroyed in the track core simultaneously with a damage cross-section of about 28.6 nm(2). Significant reduction in the absorbance of bands at 1602, 2853 and 3059 cm-l occurs above about 0.77 keV/nm at an energy deposition of about 6.4 MGy. The stronger reduction in intensity of the band at 706 cm(-1) compared to the band at 1602 cm(-1) is partly attributed to cross-links outside the track core. Alkynes are produced above a threshold of about 0.77 keV/nm. The progressive shift of the absorption edge from UV towards the visible is attributed to the carbonization of the material. (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:000088184200017 |
| 源URL | [http://119.78.100.186/handle/113462/58092]  |
| 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 polystyrene under swift Ar ion irradiation: A study of the energy loss effects[C]. 见:. |
入库方式： OAI收割
来源：近代物理研究所
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