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Development of a method for positron annihilation lifetime measurement in thin polyethylene films using a Na-22 source
https://repo.qst.go.jp/records/80496
https://repo.qst.go.jp/records/80496d790ab48-3d33-4815-a889-ea01e9f5f98f
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-09-14 | |||||
| タイトル | ||||||
| タイトル | Development of a method for positron annihilation lifetime measurement in thin polyethylene films using a Na-22 source | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Yamawaki, Masato
× Yamawaki, Masato× Uesugi, Naoya× Oka, Toshitaka× Nagasawa, Naotsugu× Ando, Hirokazu× Brain, E. O' Rourke× Kobayashi, Yoshinori× Naotsugu, Nagasawa |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Positron annihilation lifetime measurements were performed on polyethylene films [Low Density Polyethylene (LDPE) and Ultra High Molecular Weight Polyethylene (UHMWPE)] with thickness of 15 m – 2,000 m using a Na-22 positron source enclosed in a Kapton film. For thin films, some positrons will pass through the film and annihilate behind it. Using a single film in a commercial anti-coincidence system, by placing an annealed stainless steel (SUS304) cover behind the sample, it is possible to sufficiently measure the long lifetime ortho-positronium (o-Ps) component even in thin films. Additionally, calculated intensities of the o-Ps component determined from the estimated film transmittance agreed well with the measured values. Furthermore, by applying this method to uniaxially stretched UHMWPE, we were able to observe structural changes owing to the stretching consistent with shorter measured o-Ps lifetime and increased o-Ps intensity. | |||||
| 書誌情報 |
Japanese Journal of Applied Physics 巻 59, 号 11, p. 116504, 発行日 2020-11 |
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| 出版者 | ||||||
| 出版者 | IOP Publishing | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0021-4922 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.35848/1347-4065/abc02e | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://iopscience.iop.org/article/10.35848/1347-4065/abc02e | |||||
