WEKO3
アイテム
Converging Shock-induced Blow-off Acceleration (CSBA): Towards laser acceleration of protons at nearly the speed of light
https://repo.qst.go.jp/records/80387
https://repo.qst.go.jp/records/803873edc2e63-4428-4781-adcd-008bd2278fe0
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-08-28 | |||||
| タイトル | ||||||
| タイトル | Converging Shock-induced Blow-off Acceleration (CSBA): Towards laser acceleration of protons at nearly the speed of light | |||||
| 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 |
Fukuda, Yuji
× Fukuda, Yuji× Fukuda, Yuuji |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The recent advancements in both laser and target fabrication techniques have led to the enhancement of the accelerated proton cutoff energies close to 100 MeV. However, the energy spectra show a wide spread, which reduces the effective beam current to be utilized. In order to widen the possibility for high energy proton acceleration, here, we consider a different approach using micron-scale spherical hydrogen clusters, alternative to that using solid thin film targets. Recently, we have presented a new scheme using prominent characteristics of cluster targets for achieving to the level of 300 MeV quasimonoenergetic proton bunch acceleration with a low angular divergence by utilizing the internal degree of freedom (d.o.f.). In this scheme, the collisionless shock dynamics inside the micron-scale cluster subsequently coupled with relativistically induced transparency (RIT) effect of high-intensity laser plays an important role. The external d.o.f. associated with the cluster expansion due to the sheath field is also incorporated. These multiple processes can be synchronized in a self-consistent manner once suitable conditions for the laser and the cluster are satisfied, leading to the quasimonoenergetic proton bunch acceleration. We named this process Converging Shock-induced Blow-off Acceleration (CSBA). The result of a proof-of-principle experiment for the quasimonoenergetic proton bunch acceleration via interaction of micron-scale hydrogen cluster targets with PW-class laser pulses, conducted using the J-KAREN-P laser facility at KPSI-QST, will be presented. |
|||||
| 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 | Workshop on Laboratory Astrophysics: Novel Development in Nonlinear Plasma Physics with Lasers | |||||
| 発表年月日 | ||||||
| 日付 | 2020-09-03 | |||||
| 日付タイプ | Issued | |||||
