Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of laser wavelength and density scalelength on absorption of
  ultrashort intense lasers on solid-density targets   Hot electron temperatures and electron energy spectra in the course of
interaction between intense laser pulse and overdense plasmas are reexamined
from a viewpoint of the difference in laser wavelength. The hot electron
temperature measured by a particle-in-cell simulation is scaled by $I$ rather
than $I \lambda^2$ at the interaction with overdense plasmas with fixed ions,
where $I$ and $\lambda$ are the laser intensity and wavelength, respectively.

16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex