Coherently enhanced radiation reaction effects in laser-vacuum acceleration of electron bunches

The effects of coherently enhanced radiation reaction on the motion of subwavelength electron bunches in interaction with intense laser pulses are analyzed. The radiation reaction force behaves as a radiation pressure in the laser beam direction, combined with a viscous force in the perpendicular direction. Due to Coulomb expansion of the electron bunch, coherent radiation reaction takes effect only in the initial stage of the laser-bunch interaction while the bunch is still smaller than the wavelength. It is shown that this initial stage can have observable effects on the trajectory of the bunch. By scaling the system to larger bunch charges, the radiation reaction effects are strongly increased. On the basis of the usual equation of motion, this increase is shown to be such that radiation reaction may suppress the radial instability normally found in ponderomotive acceleration schemes, thereby enabling the full potential of laser-vacuum electron bunch acceleration to GeV energies. However, the applicability of the used equation of motion still needs to be validated experimentally, which becomes possible using the presented experimental scheme. For full details, see our paper [P. W. Smorenburg et al., Laser and Particle Beams 28, pp. 553-562, 2010].

[1]  L. Landau,et al.  Classical theory of fields , 1954 .

[2]  T. Tajima,et al.  Laser Electron Accelerator , 1979 .

[3]  Hutchinson,et al.  Multi-keV Electron Generation in the Interaction of Intense Laser Pulses with Xe Clusters. , 1996, Physical review letters.

[4]  Max Abraham Elektromagnetische Theorie der Strahlung , 1920 .

[5]  L. Rosenfeld,et al.  Theory of electrons , 1951 .

[6]  J. Meyer-ter-Vehn,et al.  Coherent Thomson backscattering from laser-driven relativistic ultra-thin electron layers , 2009 .

[7]  Koichi Yamakawa,et al.  Ultrarelativistic electron generation during the intense laser pulse interaction with clusters , 2006 .

[8]  G. Stupakov,et al.  Ponderomotive laser acceleration and focusing in vacuum for generation of attosecond electron bunches. , 2001, Physical review letters.

[9]  V. I. Veksler,et al.  The principle of coherent acceleration of charged particles , 1957 .

[10]  F. Rohrlich,et al.  Dynamics of a classical quasi-point charge , 2002 .

[11]  R. Stephenson A and V , 1962, The British journal of ophthalmology.

[12]  J. Meyer-ter-Vehn,et al.  EPJ manuscript No. , 1998 .

[13]  Melba Phillips,et al.  Classical Electricity and Magnetism , 1955 .

[14]  Y. Glinec,et al.  A laser–plasma accelerator producing monoenergetic electron beams , 2004, Nature.

[15]  Emma Springate,et al.  Electron kinetic energy measurements from laser irradiation of clusters , 2003 .

[16]  T. Döppner,et al.  Plasmon-enhanced electron acceleration in intense laser metal-cluster interactions. , 2007, Physical review letters.

[17]  W. Marsden I and J , 2012 .

[18]  W. Pauli,et al.  Pauli Manuscript Collection : Dirac, Classical Theory of radiating electrons , 2002 .

[19]  Victor V. Kulagin,et al.  Compression and acceleration of dense electron bunches by ultraintense laser pulses with sharp rising edge , 2004 .

[20]  G. G. Stokes "J." , 1890, The New Yale Book of Quotations.

[21]  James Koga,et al.  Interaction of electromagnetic waves with plasma in the radiation-dominated regime , 2004 .

[22]  Jie Zhang,et al.  Measurement of energetic electrons from atomic clusters irradiated by intense femtosecond laser pulses , 2002 .

[23]  F. Rohrlich,et al.  The correct equation of motion of a classical point charge , 2001 .

[24]  Koichi Yamakawa,et al.  Ultrarelativistic electron generation during the intense, ultrashort laser pulse interaction with clusters , 2007 .

[25]  J. Cary,et al.  High-quality electron beams from a laser wakefield accelerator using plasma-channel guiding , 2004, Nature.

[26]  V. A. Cherepenin,et al.  Acceleration of dense electron bunches at the front of a high-power electromagnetic wave , 2001 .

[27]  Gu,et al.  Forward ion acceleration in thin films driven by a high-intensity laser , 2000, Physical review letters.

[28]  V. P. Krainov,et al.  Cluster beams in the super-intense femtosecond laser pulse , 2002 .

[29]  A. E. Dangor,et al.  Monoenergetic beams of relativistic electrons from intense laser–plasma interactions , 2004, Nature.

[30]  Richard Stephens,et al.  Model of neutron-production rates from femtosecond-laser–cluster interactions , 2001 .

[31]  Luping Shi,et al.  Creation of a needle of longitudinally polarized light in vacuum using binary optics , 2008 .