Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transition from non-sequential to sequential double ionisation in
  many-electron systems   Obtaining a detailed understanding of strong-field double ionisation of
many-electron systems (heavy atoms and molecules) remains a challenging task.
By comparing experimental and theoretical results in the mid-IR regime, we have
unambiguously identified the transition from non-sequential (e,2e) to
sequential double ionisation in Xe and shown that it occurs at an intensity
below $10^{14}$ Wcm$^{-2}$. In addition, our data demonstrate that ionisation
from the Xe 5s orbital is decisive at low intensities. Moreover, using the
acetylene molecule, we propose how sequential double ionisation in the mid-IR
can be used to study molecular dynamics and fragmentation on unprecedented
few-femtosecond timescales.

27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio