Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Absorption and opacity threshold for a thin foil in a strong circularly
  polarized laser field   We show that a commonly accepted transparency threshold for a thin foil in a
strong circularly polarized normally incident laser pulse needs a refinement.
We present a new analytical model, which correctly accounts for laser
absorption. The refined threshold is determined not solely by the laser
amplitude, but other parameters are equally or even more important. Our
predictions are in a perfect agreement with PIC simulations. The refined
criterion is crucial for configuring laser plasma experiments in the high field
domain. Besides, an opaque foil steepens the pulse front, this can be important
for numerous applications.

16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph