Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantitative measurement of orbital angular momentum in electron
  microscopy   Electron vortex beams have been predicted to enable atomic scale magnetic
information measurement, via transfer of orbital angular momentum. Research so
far has focussed on developing production techniques and applications of these
beams. However, methods to measure the outgoing orbital angular momentum
distribution are also a crucial requirement towards this goal. Here, we use a
method to obtain the orbital angular momentum decomposition of an electron
beam, using a multi-pinhole interferometer. We demonstrate both its ability to
accurately measure orbital angular momentum distribution, and its experimental
limitations when used in a transmission electron microscope.

8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an