Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gamma-Ray Line Emission from 7-Li and 7-Be Production by Cosmic-Rays   We calculate the total gamma-ray line emission at ~450 keV that accompanies
7-Li and 7-Be production by cosmic-ray interactions, including the delayed line
emission at 0.478 MeV from 7-Be radioactive decay. We present a new gamma-ray
spectroscopic test which has the potential to give direct information on the
nature of the interstellar regions into which 7-Be ions propagate and decay.
Finally, we evaluate the intensity of the predicted diffuse emission from the
central radian of the Galaxy.

4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
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The categories of this paper are: cs
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org