Plasma structure and energy dependence in a magnetic thrust chamber system

9th International Conference on Inertial Fusion Sciences and Applications

Morita, T.^1 ; Yamamoto, N.^1 ; Kawashima, R.^2 ; Saito, N.^2 ; Edamoto, M.^2 ; Fujioka, S.^3 ; Itadani, Y.^2 ; Johzaki, T.^4 ; Miura, S.^2 ; Mori, Y.^5 ; Nishimura, H.^3 ; Sunahara, A.^6 ; Yogo, A.^3 ; Nakashima, H.^1

Department of Energy Engineering Science, Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka

816-8580, Japan^1

Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka

816-8580, Japan^2

Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Osaka, Suita

565-0871, Japan^3

Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, Hiroshima

739-8527, Japan^4

Graduate School for the Creation of New Photonics Industries, Shizuoka, Hamamatsu

431-1202, Japan^5

Institute for Laser Technology, Osaka Suita

565-0871, Japan^6

关键词: Density distributions;    Energy dependence;    Expanding plasmas;    External magnetic field;    Identical structures;    Magnetic field strengths;    Magnetic thrust chamber;    Plasma structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/717/1/012071/pdf
DOI  :  10.1088/1742-6596/717/1/012071

来源: IOP

【 摘 要 】

We demonstrate a magnetic thrust chamber system, in which an expanding plasma is controlled by an external magnetic field to produce a thrust. The plasma structure and energy dependences are discussed in terms of the drive laser energy and magnetic field strength. The density distribution from two different experiments show identical structure despite the laser energy is different by two order of magnitude when the ratio of magnetic field to plasma energy is more or less same. The experimental results indicate that this ratio is one of the essential factors to extrapolate the plasma dynamics for much larger energy such as inertial confinement fusion plasmas.