Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proton-impact-induced electron emission from biologically relevant
  molecules studied with a screened independent atom model   We use the recently introduced independent-atom-model pixel counting method
to calculate proton-impact net ionization cross sections for a large class of
biologically relevant systems including pyrimidines, purines, amino acids, and
nucleotides from 10 keV to 10 MeV impact energy. Overall good agreement with
experimental data, where available, is found. A scaling prescription that
involves coefficients derived from the independent atom model is shown to
represent the cross section results better than scalings based on the number of
(bonding) valence electrons of the target molecules. It is shown that the
scaled net ionization cross sections of the proton-nucleotide collision systems
can be represented in terms of a simple analytical formula with four parameters
to within 3% accuracy.

19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph