Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Intense Source of Cold Rb Atoms from a Pure 2D-MOT   We present a 2D-MOT setup for the production of a continuous collimated beam
of cold 87-Rb atoms out of a vapor cell. The underlying physics is purely
two-dimensional cooling and trapping, which allows for a high flux of up to
6*10^(10) atoms/s and a small divergence of the resulting beam. We analyze the
velocity distribution of the 2D-MOT. The longitudinal velocity distribution of
the atomic beam shows a broad feature(FWHM=75m/s), centered around 50m/s. The
dependence of the flux on laser intensity, geometry of the trapping volume and
on pressure in the vapor cell was investigated in detail. The influence of the
geometry of the 2D-MOT on the mean velocity of the cold beam has been studied.
We present a simple model for the velocity distribution of the flux based on
rate equations describing the general dependencies.

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The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
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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
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The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org