Tunable monoenergy positron annihilation spectroscopy of polyethylene glycol thin films
文献类型：期刊论文
| 作者 | Kuang, Peng1,2; Han, Xiao-Long3; Cao, Xing-Zhong1; Xia, Rui1; Zhang, Peng1; Wang, Bao-Yi1,2 |
| 刊名 | Chinese physics b
 |
| 出版日期 | 2017-05-01 |
| 卷号 | 26期号:5页码:5 |
| 关键词 | Slow positron Coincidence doppler broadening Micro-structure Polyethylene glycol membranes |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/26/5/057802 |
| 通讯作者 | Wang, bao-yi(wangboy@ihep.ac.cn) |
| 英文摘要 | Doppler broadening and coincidence doppler broadening of annihilation radiation experiments have been performed in three kinds of polyethylene glycol (peg) membrane formed with different average molecular weight using the tunable monoenergy slow positron probe as a function of implantion energy. the obtained positron annihilation parameters are interpreted from two aspects: surface effect and differences in micro-structure or chemical environment of positron annihilation. the experimental results show that the regulation of densification of peg molecular packing and distribution uniformity from the near surface layer to the bulk region in the film forming process can be well realized by changing its molecular weight. combining a variable monoenergetic slow positron beam and these two positron annihilation spectroscopy methods is a powerful tool to study positron annihilation characteristics and for polymeric thin-film fine structure analysis. |
| WOS关键词 | FREE-VOLUME-HOLES ; FINE-STRUCTURE ; MEMBRANES ; POLYMERS ; PERVAPORATION ; POLYPROPYLENE ; ETHANOL ; BEAMS ; PROBE |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000402539700001 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177368 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Wang, Bao-Yi |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Northwest Univ Xian, Sch Chem Engn, Xian 710069, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kuang, Peng,Han, Xiao-Long,Cao, Xing-Zhong,et al. Tunable monoenergy positron annihilation spectroscopy of polyethylene glycol thin films[J]. Chinese physics b,2017,26(5):5. |
| APA | Kuang, Peng,Han, Xiao-Long,Cao, Xing-Zhong,Xia, Rui,Zhang, Peng,&Wang, Bao-Yi.(2017).Tunable monoenergy positron annihilation spectroscopy of polyethylene glycol thin films.Chinese physics b,26(5),5. |
| MLA | Kuang, Peng,et al."Tunable monoenergy positron annihilation spectroscopy of polyethylene glycol thin films".Chinese physics b 26.5(2017):5. |
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来源：高能物理研究所
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