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Experimental investigation of sheath-driven proton beam parameters in the ultra-short pulse, ultra-high intensity regime
https://repo.qst.go.jp/records/74813
https://repo.qst.go.jp/records/74813c06beadf-ba54-4b25-81c8-fc00432b2f64
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-03-19 | |||||
| タイトル | ||||||
| タイトル | Experimental investigation of sheath-driven proton beam parameters in the ultra-short pulse, ultra-high intensity regime | |||||
| 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
ドーバー, ニコラス ピーター
× ドーバー, ニコラス ピーター× Nishiuchi, Mamiko× Kevin Koga, James× Sakaki, Hironao× Kondo, Kotaro× Kiriyama, Hiromitsu× Ogura, Koichi× Pirozhkov, Alexander× Sagisaka, Akito× Kando, Masaki× Kondo, Kiminori× Dover, NicholasPeter× Nishiuchi, Mamiko× Kevin Koga, James× Sakaki, Hironao× Kondo, Kotaro× Kiriyama, Hiromitsu× Ogura, Koichi× Pirozhkov, Alexander× Sagisaka, Akito× Kando, Masaki× Kondo, Kiminori |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | State-of-the-art high power laser facilities present numerous potential applications, including the generation of ultra-short and low emittance ion beams. Understanding the underlying laser-plasma interaction physics and resulting scaling to ultra-high intensities is of great importance for optimising such sources. We therefore present experimental data of proton acceleration in a sheath field using the ultra-high intensity J-KAREN-P laser (10 J, 40 fs, 5x1021 W/cm2), allowing investigation at the high-intensity frontier. We will demonstrate a slower than expected increase in proton energy with decreasing focal spot size, and show that this is due to a reduced sheath lifetime for tight focal spots. The proton beam spatial profile is found to vary with focal spot size, showing a narrow divergence beam at low energies (<10 MeV). This, combined with our demonstration of a potentially high repetition rate experimental geometry provides an exciting platform for potential applications at the mid-to-low energy ranges. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | JPS 74th Butsuri Gakkai 2019 | |||||
| 発表年月日 | ||||||
| 日付 | 2019-03-14 | |||||
| 日付タイプ | Issued | |||||
