Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The optimum conditions of laser field depletion in laser-electron beam
  collision   The laser field depletion in laser-electron beam collision is generally
small. However, a properly chosen parameter of the laser and electron, the
laser field depletion can be optimized. To access the laser energy evolution,
simulations of laser-electron beam collision by Particle-in-Cell (PIC)
simulation is performed. In this paper, the laser and electron parameters are
chosen such that the ponderomotive force is compensated by the radiation
reaction force in the head-on collision configuration. Then, the relativistic
electron beam can quiver in the laser pulse for a longer time to increase the
energies conversion. The optimum of laser field energy depletion is observed at
$\gamma_0= a_0 \sim 400$ and limited beyond this point due to the
impenetrability threshold. The total energy conversion from laser and electron
beam into radiation emission is optimum at $\gamma_0= a_0 \sim 250$. This
conversion efficiency can be up to several percent for an electron bunch with
charges of a few nC. This efficient gamma-ray sources may provide some useful
application in photonuclear experiments.

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The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
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The categories of this paper are: eess
5
The categories of this paper are: gr-qc
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The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph