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Phys. Rev. E 76, 055402(R) (2007) [4 pages]

Bubble regime for ion acceleration in a laser-driven plasma

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Baifei Shen1,2,3, Yuelin Li2,3, M. Y. Yu4, and John Cary5,6
1Shanghai Institute of Optics and Fine Mechanics, P.O. Box 800-211, Shanghai 201800, China
2Accelerator Systems Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
3Argonne Accelerator Institute, Argonne National Laboratory, Argonne, Illinois 60439, USA
4Institut für Theoretische Physik I, Ruhr-Universität Bochum, D-44780 Bochum, Germany
5Tech-X Corporation, Boulder, Colorado 80303, USA
6Department of Physics, University of Colorado, Boulder, Colorado 80309, USA

Received 12 February 2007; revised 24 September 2007; published 9 November 2007

Proton trapping and acceleration by an electron bubble-channel structure in laser interaction with high-density plasma is investigated by using three-dimensional particle-in-cell simulations. It is shown that protons can be trapped, bunched, and efficiently accelerated for appropriate laser and plasma parameters, and the proton acceleration is enhanced if the plasma consists mainly of heavier ions such as tritium. The observed results are analyzed and discussed in terms of a one-dimensional analytical three-component-plasma wake model.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.76.055402
DOI:
10.1103/PhysRevE.76.055402
PACS:
52.38.Kd, 52.38.Hb, 52.65.Rr
 
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