Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Complex fission phenomena   Complex fission phenomena are studied in a unified way. Very general
reflection asymmetrical equilibrium (saddle point) nuclear shapes are obtained
by solving an integro-differential equation without being necessary to specify
a certain parametrization. The mass asymmetry in binary cold fission of Th and
U isotopes is explained as the result of adding a phenomenological shell
correction to the liquid drop model deformation energy. Applications to binary,
ternary, and quaternary fission are outlined.

20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn