Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conversion of recoilless gamma-radiation into a periodic sequence of
  ultrashort pulses in a set of dispersive and absorptive resonant media   An efficient technique to produce a periodic sequence of ultrashort pulses of
recoilless gamma-radiation via its transmission through the optically thick
vibrating resonant absorber was demonstrated recently [Nature, 508, 80 (2014)].
In this work we extend the theoretical analysis to the case of a set of
multiple absorbers. We consider an analytical model describing the control of
spectral content of a frequency modulated gamma-radiation by selective
correction of amplitudes and initial phases of some spectral components, using,
respectively, the resonant absorption or dispersion of nuclei. On the basis of
the analytical solutions we determine the ultimate possibilities of the
proposed technique.

36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph