Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of extreme states of matter at high energy densities and high
  strain rates with powerful lasers   In the paper, a review of most important results of experimental studies of
thermonuclear plasma in conical targets, generation of shock waves and
spallation phenomena in different materials, which were carried out at laser
facilities of the A M Prokhorov General Physics Institute RAS since 1977, is
presented.

29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an