Effect of self-injection on ultraintense laser wake-field acceleration

A. Zhidkov; J. Koga; K. Kinoshita; M. Uesaka

doi:10.1103/PhysRevE.69.035401

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Effect of self-injection on ultraintense laser wake-field acceleration

A. Zhidkov¹, J. Koga², K. Kinoshita¹, and M. Uesaka¹

¹Nuclear Engineering Research Laboratory, Graduate School of Engineering, The University of Tokyo, 22-2 Shirane-shirakata, Tokai, Naka, Ibaraki 319-1188, Japan
²Advanced Photon Research Center, Japan Atomic Energy Research Institute, 8-1 Umemidai, Kizu-chou, Souraku-gun, Kyoto 619-0215, Japan

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Phys. Rev. E 69, 035401(R) – Published 31 March, 2004

DOI: https://doi.org/10.1103/PhysRevE.69.035401

Abstract

The self-injection of plasma electrons which have been accelerated to relativistic energies by a laser pulse moving with a group velocity less than the speed of light with $I λ^{2} > 5 \times 10^{19} W μ m^{2} / {cm}^{2}$ is found via particle-in-cell simulation to be efficient for laser wake-field acceleration. When the matching condition $a_{0} >~ {(2}^{1 / 4} ω / ω_{pl})^{2 / 3}$ is met, the self-injection, along with wave breaking, dominates monoenergetic electron acceleration yielding up to 100 MeV energies by a 100 TW, 20 fs laser pulse. In contrast to the injection due to wave-breaking processes, self-injection allows suppression of production of a Maxwell distribution of accelerated particles and the extraction of a beam-quality bunch of energetic electrons.

References (18)

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[c1] T. Tajima and J. Dawson, Phys. Rev. Lett. 43, 267 (1979).

[c2] K. Nakajima et al., Phys. Rev. Lett. 74, 4428 (1995); ibid.F. Amiranoff et al., 81, 995 (1998); F. Dorchies et al., Phys. Plasmas 6, 2903 (1999).

[c3] D. Umstadter et al., Science 273, 472 (1996); D. UmstadterPhys. Rev. Lett. 76, 2073 (1996).

[c4] E. Esarey et al., Phys. Rev. Lett. 79, 2682 (1997); E. EsareyIEEE Trans. Plasma Sci. 24, 252 (1996).

[c5] M. Uesaka et al., Phys. Rev. E 50, 3068 (1994); M. UesakaRadiat. Phys. Chem. 60, 303 (2001); Nucl. Instrum. Methods Phys. Res. A 455, 148 (2000).

[c6] V. Malka et al., Phys. Plasmas 8, 2605 (2001); V. MalkaScience 298, 1600 (2002).

[c7] S. V. Bulanov, V. I. Kirsanov, and A. S. Sakharov, JETP Lett. 53, 565 (1991).

[c8] S. Bulanov, N. Naumova, F. Pegoraro, and J. Sakai, Phys. Rev. E 58, R5257 (1998).

[c9] Y. Ueshima et al., Nucl. Instrum. Methods Phys. Res. A 445, 130 (2000).

[c10] S. V. Bulanov et al., Phys. Fluids B 4, 1935 (1992).

[c11] A. Pukhov and J. Meyer-ter-Vehn, Appl. Phys. B: Lasers Opt. 74, 355 (2002).

[c12] F. V. Hartemann et al., Phys. Rev. E 51, 4833 (1995).

[c13] C. D. Decker and W. B. Mori, Phys. Rev. E 51, 1364 (1995).

[c14] C. J. McKinstrie and E. A. Startsev, Phys. Rev. E 56, 2130 (1997).

[c15] We assume that the length, $d_{e},$ of the electron cloud generated at the front of the pulse is such that $d_{e} ≪ d .$

[c16] C. K. Birdsall and A. B. Langdon, Plasma Physics via Computer Simulation (Adam Hilger, Bristol, 1992).

[c17] R. G. Hemker et al., Phys. Rev. ST Accel. Beams 5, 041301 (2002).

[c18] The laser parameters are chosen close to those of the JAERI laser with the maximal power 0.85 PW; see M. Aoyama et al., Opt. Lett. 28, 1594 (2003).

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Effect of self-injection on ultraintense laser wake-field acceleration

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