Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous stopping and charge transfer in proton-irradiated graphene   We use first-principles calculations to uncover and explain a new type of
anomalous low-velocity stopping effect in proton-irradiated graphene. We
attribute a shoulder feature that occurs exclusively for channeling protons to
enhanced electron capture from $\sigma$+$\pi$ orbitals. Our analysis of
electron emission indicates that backward emission is more sensitive to proton
trajectory than forward emission and could thus produce higher contrast images
in ion microscopy. For slow protons, we observe a steep drop in emission,
consistent with predictions from analytical models.

14
The categories of this paper are: math-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics