Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zeeman Slowers for Strontium based on Permanent Magnets   We present the design, construction, and characterisation of longitudinal-
and transverse-field Zeeman slowers, based on arrays of permanent magnets, for
slowing thermal beams of atomic Sr. The slowers are optimised for operation
with deceleration related to the local laser intensity (by the parameter
$\epsilon$), which uses more effectively the available laser power, in contrast
to the usual constant deceleration mode. Slowing efficiencies of up to
$\approx$ $18$ $%$ are realised and compared to those predicted by modelling.
We highlight the transverse-field slower, which is compact, highly tunable,
light-weight, and requires no electrical power, as a simple solution to slowing
Sr, well-suited to spaceborne application. For $^{88}$Sr we achieve a slow-atom
flux of around $6\times 10^9$ atoms$\,$s$^{-1}$ at $30$ ms$^{-1}$, loading
approximately $5\times 10^8$ atoms in to a magneto-optical-trap (MOT), and
capture all isotopes in approximate relative natural abundances.

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The categories of this paper are: cs
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th