Direct heating of compressed core by ultra-intense laser

9th International Conference on Inertial Fusion Sciences and Applications

Sunahara, A.^1 ; Johzaki, T.^2 ; Sakagami, H.^3 ; Nagatomo, H.^4 ; Mima, K.^5 ; Abe, Y.^4 ; Arikawa, Y.^4 ; Fujioka, S.^4 ; Shiraga, H.^4 ; Azechi, H.^4 ; Mori, Y.^5 ; Sentoku, Y.^6 ; Kitagawa, Y.^5

Institute for Laser Technology, 2-6 Yamadaoka, Suita Osaka

565-0871, Japan^1

Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima

739-8527, Japan^2

National Institute for Fusion Science, 322-6 Oroshi-cho, Toki

509-5292, Japan^3

Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka Suita, Osaka

565-0871, Japan^4

Graduate School for the Creation of New Photonics Industries, Kurematsuchou, 1955-1, Nishi-ku, Hamamatsu

431-1202, Japan^5

Department of Physics, University of Nevada, Reno 1664 N. Virginia St., Reno

NV

89557, United States^6

关键词: Compressed cores;    Conical geometry;    Direct heating;    Ignition temperatures;    Particle-in-cell simulations;    Temperature scaling;    Transport simulation;    Ultra-intense lasers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012055/pdf
DOI  :  10.1088/1742-6596/717/1/012055

来源: IOP

【 摘 要 】

We propose a new scheme for heating an imploded core in the fast-ignition scheme. In this method, a heating laser irradiates an imploded core plasma directly. The accelerated fast-ions as well as fast-electrons heat the core. Two-dimensional particle in cell (PIC) simulation confirmed that carbon C6+and deuteron D+ions were accelerated as well as fast electrons when ultra-intense laser irradiates the CD plasma. In order to estimate the temperature scaling of the heated core in this scheme, we conducted transport simulations in the one-dimensional conical geometry. Our results show that 5 keV of ignition temperature can be achieved at the intensity of 1021W/cm2, and 1.5 ps pulse for the compressed CD plasma with 10g/cm3density.