Open AccessAxial backlighting of two-wire Z-pinch using an X-pinch as an X-ray source
Author(s) -
Shibei Zhao,
Xiaopeng Zhu,
Haiyang Shi,
Zou Xiaobing,
Xinxin Wang
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.015203
Subject(s) - z pinch , backlight , plasma , pinch , optics , plasma diagnostics , physics , electron density , pulsed power , wedge (geometry) , materials science , power (physics) , nuclear physics , liquid crystal display , quantum mechanics
The axial backlighting of two-wire Z-pinch using an X-pinch as an X-ray source was conducted on PPG-1, a pulsed power generator with a current of 400 kA in amplitude and 100 ns in pulse width. Its time-resolved axial backlighting images are obtained. In the backlighting images all the physical processes similar to those occurring in the early stage of the wire-array Z-pinch are observed, including the expansion of the high-density wire core surrounded by low-density coronal plasmas, the motion of the coronal plasma toward the axis of the wire-array, and the formation of precursor plasma. The areal mass density of the plasma shown in the backlighting images is calibrated with step-wedge filters. And the time-resolved radial distributions of the areal mass density of the plasma from the two-wire Z-pinch are obtained.