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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Sunflower effect: enhancement of laser-pulse-induced impulse in the beam incident direction due to surface undulation

http://hdl.handle.net/2237/00030684
http://hdl.handle.net/2237/00030684
9f0ae95c-48cd-4535-8c3b-1b8b5427e269
名前 / ファイル ライセンス アクション
Katagiri-Oblique_Impulse_Enhancement-Physica_Scripta-190331.pdf Katagiri-Oblique_Impulse_Enhancement-Physica_Scripta-190331 (808.6 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-09-13
タイトル
タイトル Sunflower effect: enhancement of laser-pulse-induced impulse in the beam incident direction due to surface undulation
言語 en
著者 Katagiri, Yusuke

× Katagiri, Yusuke

WEKO 93456

en Katagiri, Yusuke

Search repository
Sasoh, Akihiro

× Sasoh, Akihiro

WEKO 93457

en Sasoh, Akihiro

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 This is an author-created, un-copyedited version of an article published in {Physica Scripta}. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at {https://doi.org/10.1088/1402-4896/ab1944}. “This Accepted Manuscript is available for reuse under a CC BY-NC-ND 3.0 licence after the 12 month embargo period provided that all the terms of the licence are adhered to”
抄録
内容記述 An impulse generated by laser ablation bas been implicitly assumed to be directed in the normal direction to the irradiation surface. In this study, however, the impulse induced by an Nd:YAG laser pulse with a wavelength of 1.064 μm irradiated on to a macroscopically flat aluminium plate ablator was enhanced in the direction of the laser beam incidence due to microscopic surface undulation, the characteristic height and pitch of which are tens of the beam wavelengths. The inner product of the incident laser beam vector and the normal vector to the surface is locally enhanced on the 'sunny' side. In the vapor regime in which the impulse is an increasing function of the fluence, the effective fluence and the impulse component in the incident direction are enhanced. With repetitively irradiating laser pulses on to the same spot with a fluence of 4.5 J cm^−2 nominal to a macroscopically flat surface, the impulse gradually increased due to this 'sunflower' effect, then became saturated. The momentum coupling coefficient in the saturation stage became an increasing function of the angle of incidence. This impulse performance will become considerably important in the application of laser ablation to the remote motion control or even deorbiting of space debris.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2020-08-01
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 IOP publishing
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1088/1402-4896/ab1944
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0031-8949
書誌情報 en : Physica Scripta

巻 94, 号 8, p. 085004, 発行日 2019-08
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