Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optically Pumped Magnetometry in Arbitrarily Oriented Magnetic Fields   Optically pumped atomic magnetometers (OPMs) offer highly sensitive magnetic
measurements using compact hardware, offering new possibilities for practical
precision sensors. Double-resonance OPM operation is well suited to unshielded
magnetometry, due to high sensor dynamic range. However, sensor response is
highly anisotropic with variation in the orientation of the magnetic field. We
present data quantifying these effects and discuss implications for the design
of practical sensors.

21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess