Open AccessImplosion characteristics of conical wirearray Z pinches on Qiangguang1 facility
Author(s) -
Jiang Shuqing,
Fan Ye,
Yang Jian-Lun,
Xia Guangxin,
Faqiang Zhang,
Zhenghong Li,
Rongkun Xu,
Xu Zhang,
Ying-Jun Pan
Publication year - 2012
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.61.195205
Subject(s) - implosion , conical surface , z pinch , physics , pinch , bubble , cathode , optics , plasma , anode , radiation , atomic physics , mechanics , materials science , nuclear physics , electrical engineering , electrode , composite material , quantum mechanics , engineering
Implosion and radiation characteristics of conical wire array in different regimes of implosion are investigated at the 1 MA Qiangguang-1 facility by X-ray self-emission diagnostics. Experimental results show that the shape of precursor plasma is also conical. The initial implosion takes place near the cathode by a stronger Lorenz force, forming a triangle-like structure that produces harder X ray. The current crossing the bubble in the front of the wire array near the anode persists in persist ablating, thereby leading to a zippered stagnation. The initial implosion of a bubble near the cathode is followed by the implosion zippering upwards as the zipper implosion speed is 2.59 107 cm/s. The results shows that the conical array has a broader X-ray power pulse than cylinderical wire array due to the zippered stagnation and zippered implosion of the array. The study of implosion characteristics of specialized axis symmetric wire array Z-pinch-like conical wire array can provide a valuable test bed for understanding the regime of implosion as well as theoretical model and magneto-hydrodynamic (MHD) codes, both of which primarily develop for the modeling of cylindrical wire array Z pinches.