Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sustained Comoving Acceleration of Overdense Plasmas by Colliding Laser
  Pulses   We review recent PIC simulation results which show that double-sided
irradiation of a thin over- dense plasma slab by ultra-intense laser pulses
from both sides can lead to sustained comoving acceleration of surface
electrons to energies much higher than the conventional ponderomotive limit.
The acceleration stops only when the electrons drift transversely out of the
laser beam. We show latest 2.5D results of parameter studies based on finite
laser spot size and discuss future laser experiments that can be used to test
these results.

22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: eess
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci