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Journal Articles

Laser driven ion beam acceleration; Towards the frontiers of the nuclei physics

Nishiuchi, Mamiko; Sakaki, Hironao

Isotope News, (739), p.15 - 20, 2015/11

We introduce the multi-charged heavy-ion acceleration mechanisms and the recent results obtained at the KPSI JAEA. We also propose the novel application of the laser-driven multi-charged heavy ion beam.

Journal Articles

Acceleration of the iron nuclei by light; Can light be a novel and complementary method to solve the problem on the nucleosynthesis ?

Nishiuchi, Mamiko; Sakaki, Hironao

Nihon Genshiryoku Gakkai-Shi ATOMO, 57(10), p.677 - 681, 2015/10

https://doi.org/10.3327/jaesjb.57.10_677

Light, such as, High intensity short pulse laser interacting with the thin-foil target, accelerates the almost fully stripped Iron ions towards the energy of 0.9 GeV. It is quite difficult for the conventional ion sources to make the highly charged heavy ions within few tens of femtoseconds and at the same time accelerates them towards higher energies. The achievement explained here is one new step towards the novel type compact ion sources.

Journal Articles

Projection imaging with directional electron and proton beams emitted from an ultrashort intense laser-driven thin foil target

Nishiuchi, Mamiko; Choi, I. W.*; Daido, Hiroyuki; Nakamura, Tatsufumi*; Pirozhkov, A. S.; Yogo, Akifumi*; Ogura, Koichi; Sagisaka, Akito; Orimo, Satoshi; Daito, Izuru*; et al.

Plasma Physics and Controlled Fusion, 57(2), p.025001_1 - 025001_9, 2015/02

https://doi.org/10.1088/0741-3335/57/2/025001

Times Cited Count：3 Percentile：13.75(Physics, Fluids & Plasmas)

Projection images of a metal mesh produced by directional MeV electron beam together with directional proton beam, emitted simultaneously from a thin foil target irradiated by an ultrashort intense laser. The mesh patterns are projected to each detector by the electron beam and the proton beam originated from tiny virtual sources of 20 micron meter and 10 micron meter diameters, respectively. Based on the observed quality and magnification of the projection images, we estimate sizes and locations of the virtual sources for both beams and characterize their directionalities. To carry out physical interpretation of the directional electron beam qualitatively, we perform 2D particle-in-cell simulation which reproduces a directional escaping electron component, together with a non-directional dragged-back electron component, the latter mainly contributes to building a sheath electric field for proton acceleration.