Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparative study of depth-dose distributions for beams of light and
  heavy nuclei in tissue-like media   We study the energy deposition by light and heavy nuclei in tissue-like media
as used for cancer therapy. The depth-dose distributions for protons, $^{3}$He,
$^{12}$C, $^{20}$Ne, and $^{58}$Ni nuclei are calculated within a Monte Carlo
model based on the GEANT4 toolkit. These distributions are compared with each
other and with available experimental data. It is demonstrated that nuclear
fragmentation reactions essentially reduce the peak-to-plateau ratio of the
dose profiles for deeply penetrating energetic ions heavier than $^{3}$He. On
the other hand, all projectiles up to $^{20}$Ne were found equally suitable for
therapeutic use at low penetration depths.

15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat