Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photon statistics of incoherent cathodoluminescence with continuous and
  pulsed electron beams   Photon bunching in incoherent cathodoluminescence (CL) spectroscopy
originates from the fact that a single high-energy electron can generate
multiple photons when interacting with a material, thus revealing key
properties of electron-matter excitation. Contrary to previous works based on
Monte-Carlo modelling, here we present a fully analytical model describing the
amplitude and shape of the second order autocorrelation function
($g^{(2)}(\tau)$) for continuous and pulsed electron beams. Moreover, we extend
the analysis of photon bunching to ultrashort electron pulses, in which up to
500 electrons per pulse excite the sample within a few picoseconds. We obtain a
simple equation relating the bunching strength ($g^{(2)}(0)$ to the electron
excitation efficiency ($\gamma$), electron beam current, emitter decay lifetime
and pulse duration, in the case of pulsed electron beams. The analytical model
shows good agreement with experimental data obtained on InGaN/GaN quantum wells
using continuous, ns-pulsed (using beam blanker) and ultrashort ps-pulsed
(using photoemission) electron beams. We extract excitation efficiencies of
0.13 and 0.05 for 10 and 8 keV electron beams, respectively, and we observe
that non-linear effects play no compelling role even after excitation with
ultrashort and dense electron cascades in the quantum wells.

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The categories of this paper are: q-alg
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
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The categories of this paper are: adap-org
16
The categories of this paper are: stat
2
The categories of this paper are: math
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The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
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The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc