Linear theory of resonance self-modulation of an intense laser pulse in homogeneous plasma and plasma channels

Journal Article · Mon Apr 01 00:00:00 EST 1996 · IEEE Transactions on Plasma Science

DOI:https://doi.org/10.1109/27.510000· OSTI ID:264372

Andreev, N E; Kirsanov, V I ^[1]; Gorbunov, L M ^[2]; Sakharov, A S ^[3]

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1. Russian Academy of Sciences, Moscow (Russian Federation). Joint Inst. for High Temperatures
2. Russian Academy of Sciences, Moscow (Russian Federation). P.N. Lebedev Physical Inst.
3. Russian Academy of Sciences, Moscow (Russian Federation). Inst. of General Physics

The analytical solutions describing the linear stage of the intense-laser-pulse self-modulation, which results in a strong plasma wakefield excitation, are studied in terms of the paraxial approximation. The attention is focused on phase relations that were ignored in the previous studies. It is shown that the value of the phase velocity of the plasma wake wave differs from the pulse group velocity so that under some specific conditions, the relativistic factor corresponding to the phase velocity can be substantially less than that for the group velocity. This may be important for the particle acceleration in the self-modulated laser wakefield accelerator.

• OSTI ID: 264372
• Journal Information: IEEE Transactions on Plasma Science, Vol. 24, Issue 2; Other Information: PBD: Apr 1996
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
WAKEFIELD ACCELERATORS
RESEARCH PROGRAMS
LASER RADIATION
INTERACTIONS
HOMOGENEOUS PLASMA
CHARGED PARTICLES
ACCELERATION
MODULATION
PLASMA WAVES
PHASE VELOCITY
RELATIVISTIC RANGE