Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Activation cross-section data for alpha-particle induced nuclear
  reactions on natural ytterbium for some longer lived radioisotopes   Additional experimental cross sections were deduced for the long half-life
activation products (172Hf and 173Lu) from the alpha particle induced reactions
on ytterbium up to 38 MeV from late, long measurements and for 175Yb, 167Tm
from a re-evaluation of earlier measured spectra. The cross-sections are
compared with the earlier experimental datasets and with the data based on the
TALYS theoretical nuclear reaction model (available in the TENDL-2014 and 2015
libraries) and the ALICE-IPPE code.

29
The categories of this paper are: funct-an
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph