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Knudsen layer formation in laser induced thermal desorption
http://hdl.handle.net/2261/56954
http://hdl.handle.net/2261/56954346384f9-b741-48a2-a5a9-27d1e89b5788
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
1.4795827.pdf (235.6 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2015-05-28 | |||||
| タイトル | ||||||
| タイトル | Knudsen layer formation in laser induced thermal desorption | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Ikeda, Akihiko
× Ikeda, Akihiko× Matsumoto, Masuaki× Ogura, Shohei× Okano, Tatsuo× Fukutani, Katsuyuki |
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| 著者所属 | ||||||
| 著者所属 | Institute of Industrial Science, The University of Tokyo | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Laser induced thermal desorption of Xe atoms into vacuum from a metal surface following the nano-second pulsed laser heating was investigated by the time-of-flight (TOF) measurement. The desorption flow was studied at a wide range of desorption flux by varying the initially prepared Xe coverage Θ (1 ML = 4.5 × 1018 atoms/m2). At Θ = 0.3 ML, the TOF of Xe was well represented by a Maxwell-Boltzmann velocity distribution, which is in good agreement with thermal desorption followed by collision-free flow. At Θ > 0.3 ML, the peak positions of the TOF spectra were shifted towards the smaller values and became constant at large Θ, which were well fitted with a shifted Maxwell-Boltzmann velocity distribution with a temperature T D and a stream velocity u. With T D fixed at 165 K, u was found to increase from 80 to 125 m/s with increasing Θ from 1.2 to 4 ML. At Θ > 4 ML, the value of u becomes constant at 125 m/s. The converging feature of u was found to be consistent with analytical predictions and simulated results based on the Knudsen layer formation theory. We found that the Knudsen layer formation in laser desorption is completed at Knudsen number Kn <0.39. | |||||
| 書誌情報 |
The Journal of Chemical Physics 巻 138, 号 12, 発行日 2013-03-27 |
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| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1089-7690 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1063/1.4795827 | |||||
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| 値 | publisher | |||||
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| 出版者 | AIP Publishing | |||||
