Study on AC-DC Electrical Conductivities in Warm Dense Matter Generated by Pulsed-power Discharge with Isochoric Vessel

8th International Conference on Inertial Fusion Sciences and Applications

Sasaki, Toru^1 ; Ohuchi, Takumi^1 ; Takahashi, Takuya^1 ; Kawaguchi, Yoshinari^1 ; Saito, Hirotaka^1 ; Miki, Yasutoshi^1 ; Takahashi, Kazumasa^1 ; Kikuchi, Takashi^1 ; Aso, Tsukasa^1 ; Harada, Nob^1

Department of Electrical Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata, Japan^1

关键词: AC electrical conductivity;    DC electrical conductivity;    Multi-channel spectrometer;    Photodiode arrays;    Pulsed power discharge;    Spectroscopic ellipsometers;    Visible spectra;    Warm dense matters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012103/pdf
DOI  :  10.1088/1742-6596/688/1/012103

来源: IOP

【 摘 要 】

To observe AC and DC electrical conductivity in warm dense matter (WDM), we have demonstrated to apply the spectroscopic ellipsometry for a pulsed-power discharge with isochoric vessel. At 10 μs from the beginning of discharge, the generated parameters by using pulsed-power discharge with isochoric vessel are 0.1 ρs(ρs: solid density) of density and 4000 K of temperature, respectively. The DC electrical conductivity for above parameters is estimated to be 104S/m. In order to measure the AC electrical conductivity, we have developed a four-detector spectroscopic ellipsometer with a multichannel spectrometer. The multichannel spectrometer, in which consists of a 16-channel photodiode array, a two-stages voltage adder, and a flat diffraction grating, has 10 MHz of the frequency response with covered visible spectrum. For applying the four-detector spectroscopic ellipsometer, we observe the each observation signal evolves the polarized behavior compared to the ratio as I1/I2.