Details

Autor(en) / Beteiligte

• Ye, Fan
• Li, Zhenghong
• Chen, Faxin
• Xue, Feibiao
• Meng, Shijian
• Ning, Jiamin
• Qin, Yi
• Hu, Qingyuan
• Jiang, Shuqing
• Li, Linbo
• Chu, Yanyun
• Yang, Jianlun
• Xu, Rongkun
• Xu, Zeping

Titel

Investigation of ablation of thin foil aluminum ribbon array at 1.5 MA

Ist Teil von

• Physics of plasmas, 2016-06, Vol.23 (6)

Erscheinungsjahr

2016

Beschreibungen/Notizen

• We present experimental studies of initiation and ablation of a thin foil aluminum ribbon array at the 1.5 MA current level. In contrast to the previous work, we employ ribbon arrays with different ribbon gap parameters to investigate how this affects plasma initiation and foil ablation. Gated narrowband ultraviolet imaging indicated that the current was disorderly distributed at early period of discharge. But later on, it became axially stable and azimuthally symmetrical even for load with a gap as small as 0.1 mm. Using magnetic field probes installed inside and outside the array, we also observed that precursor current at positions with a distance of less than 2.7 mm to the central axis for 4-mm-radius arrays decreased when ribbon gap became small. Results of 0.2 mm gap ribbon array showed an evidence that ribbons can be merged. These observations imply that thin foil ribbon arrays may have potential applications in z-pinch experiments on large scale pulsed power facilities.