Note: Low density and long plasma channels generated by laser transversely ignited ablative capillary discharges

A technique is developed to reduce the jitter associated with ablative capillary discharges. A laser pulse propagating perpendicularly to the axis of the capillary and focused onto a copper wire creates a plasma that initiates the discharge. This transverse laser ignition method has several advantag...

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Bibliographic Details
Published in:Review of scientific instruments 2010-03, Vol.81 (3), p.036107-036107-3
Main Authors: Liu, Mingwei, Deng, Aihua, Liu, Jiansheng, Li, Ruxin, Xu, Jiancai, Xia, Changquan, Wang, Cheng, Shen, Baifei, Xu, Zhizhan, Nakajima, K.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CAPILLARIES
COPPER
ELECTRIC DISCHARGES
LASER-PRODUCED PLASMA
PLASMA DENSITY
PLASMA PRODUCTION
WIRES
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Summary:A technique is developed to reduce the jitter associated with ablative capillary discharges. A laser pulse propagating perpendicularly to the axis of the capillary and focused onto a copper wire creates a plasma that initiates the discharge. This transverse laser ignition method has several advantages over previous techniques employing a laser pulse collinear with the capillary, including increased capillary lifetime and simpler arrangement of the igniting and the driving pulses for laser-wakefield acceleration. Using this technique long, low density plasma channels are produced with low jitter.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3360925