Details

Autor(en) / Beteiligte

• Li, Liling
• Zhang, Lu
• Jiang, Shaoen
• Guo, Liang
• Qing, Bo
• Li, Zhichao
• Zhang, Jiyan
• Yang, Jiamin
• Ding, Yongkun

Titel

The M-band transmission flux of the plastic foil with a coated layer of silicon or germanium

Ist Teil von

• Applied physics letters, 2014-02, Vol.104 (5)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2014

Quelle

AIP Journals (American Institute of Physics)

Beschreibungen/Notizen

• Silicon (Si) and Germanium (Ge) can be used as the dopant in the ablator material for the purpose of reducing preheating in indirect-drive inertial confinement fusion. Their performances in reducing preheating are quite different. A method to evaluate the difference of these two kinds of dopants has been presented in this letter. In the Shenguang-II high power laser facility, the M-band (1.6–4.4 keV) transmission flux of Si-coated plastic (CH) and Ge-coated plastic (CH) has been measured by using the M-band x-ray diode. In the experiment, we find that the Si-coated CH can absorb more M-band x-rays and thus reduce the preheating of the fuel in our experiment condition. By using the radiation hydrodynamic code MULTI-1D, we got the simulation result which was well suited for the experiment. The comparison of their opacities (Te = 60–100 eV and ρ = 0.1–0.5 g/cm3) also shows that the opacity of Si is higher than that of Ge almost in the whole range of 1.6–4.4 keV.