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Efficient ion acceleration by collective laser-driven electron dynamics with ultra-thin foil targets

Published online by Cambridge University Press:  14 April 2010

S. Steinke*
Affiliation:
Max-Born-Institut, D-12489 Berlin, Germany
A. Henig
Affiliation:
Max-Planck-Institut f. Quantenoptik, D-85748 Garching, Germany Fakultät f. Physik, LMU München, D-85748 Garching, Germany
M. Schnürer
Affiliation:
Max-Born-Institut, D-12489 Berlin, Germany
T. Sokollik
Affiliation:
Max-Born-Institut, D-12489 Berlin, Germany
P.V. Nickles
Affiliation:
Max-Born-Institut, D-12489 Berlin, Germany Gwangju Institute of Science and Technology, GIST, Gwangju 500-712, Republic of Korea
D. Jung
Affiliation:
Fakultät f. Physik, LMU München, D-85748 Garching, Germany Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
D. Kiefer
Affiliation:
Max-Planck-Institut f. Quantenoptik, D-85748 Garching, Germany Fakultät f. Physik, LMU München, D-85748 Garching, Germany
R. Hörlein
Affiliation:
Max-Planck-Institut f. Quantenoptik, D-85748 Garching, Germany Fakultät f. Physik, LMU München, D-85748 Garching, Germany
J. Schreiber
Affiliation:
Max-Planck-Institut f. Quantenoptik, D-85748 Garching, Germany Fakultät f. Physik, LMU München, D-85748 Garching, Germany Imperial College London, SW7 2BZ, UK
T. Tajima
Affiliation:
Fakultät f. Physik, LMU München, D-85748 Garching, Germany Photomedical Research Center, JAEA. Kyoto, Japan
X.Q. Yan
Affiliation:
Max-Planck-Institut f. Quantenoptik, D-85748 Garching, Germany State Key Lab of Nuclear physics and technology, Peking University, 100871, Beijing, China
M. Hegelich
Affiliation:
Fakultät f. Physik, LMU München, D-85748 Garching, Germany Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
J. Meyer-ter-Vehn
Affiliation:
Max-Planck-Institut f. Quantenoptik, D-85748 Garching, Germany
W. Sandner
Affiliation:
Max-Born-Institut, D-12489 Berlin, Germany
D. Habs
Affiliation:
Max-Planck-Institut f. Quantenoptik, D-85748 Garching, Germany Fakultät f. Physik, LMU München, D-85748 Garching, Germany
*
Address correspondence and reprint requests to: S. Steinke, Max-Born-Institut, D-12489 Berlin, Germany. E-mail: [email protected]

Abstract

Experiments on ion acceleration by irradiation of ultra-thin diamond-like carbon (DLC) foils, with thicknesses well below the skin depth, irradiated with laser pulses of ultra-high contrast and linear polarization, are presented. A maximum energy of 13 MeV for protons and 71 MeV for carbon ions is observed with a conversion efficiency of ~10%. Two-dimensional particle-in-cell (PIC) simulations reveal that the increase in ion energies can be attributed to a dominantly collective rather than thermal motion of the foil electrons, when the target becomes transparent for the incident laser pulse.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2010

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References

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