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Phys. Rev. E 79, 015401(R) (2009) [4 pages]

Laser-driven inertial ion focusing

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H. B. Zhuo1,*, Wei Yu2,3, M. Y. Yu3,4, H. Xu1, X. Wang2, B. F. Shen2, Z. M. Sheng5, and J. Zhang5
1National Laboratory for Parallel and Distributed Processing, School of Computer Science, National University of Defense Technology, Changsha 410073, China
2Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
3Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, China
4Institute for Theoretical Physics I, Ruhr University, Bochum D-44780, Germany
5Department of Physics, Jiaotong University, Shanghai 200240, China

Received 28 May 2008; published 13 January 2009

A Hohlraum-like configuration is proposed for realizing a simple compact source for neutrons. A laser pulse enters a tiny thin-shelled hollow-sphere target through a small opening and is self-consistently trapped in the cavity. The electrons in the inner shell-wall region are expelled by the light pressure. The resulting space-charge field compresses the local ions into a thin layer that becomes strongly heated. An inward expansion of ions into the shell cavity then occurs, resulting in the formation at the cavity center of a hot spot of ions at high density and temperature, similar to that in inertial electrostatic confinement.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.79.015401
DOI:
10.1103/PhysRevE.79.015401
PACS:
52.38.Kd, 52.58.Qv, 52.50.Lp, 29.25.Dz

*Corresponding author. zhḇpic̱2d@sina.com

 
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