Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exploring photoelectron angular distributions emitted from molecular
  dimers by two delayed intense laser pulses   We describe the results of experiments and simulations performed with the aim
of extending photoelectron spectroscopy with intense laser pulses to the case
of molecular compounds. Dimer frame photoelectron angular distributions
generated by double ionization of N$_2$-N$_2$ and N$_2$-O$_2$ van der Waals
dimers with ultrashort, intense laser pulses are measured using four-body
coincidence imaging with a reaction microscope. To study the influence of the
first-generated molecular ion on the ionization behavior of the remaining
neutral molecule we employ a two-pulse sequence comprising of a linearly
polarized and a delayed elliptically polarized laser pulse that allows
distinguishing the two ionization steps. By analysis of the obtained electron
momentum distributions we show that scattering of the photoelectron on the
neighbouring molecular potential leads to a deformation and rotation of the
photoelectron angular distribution as compared to that measured for an isolated
molecule. Based on this result we demonstrate that the electron momentum space
in the dimer case can be separated, allowing to extract information about the
ionization pathway from the photoelectron angular distributions. Our work, when
implemented with variable pulse delay, opens up the possibility of
investigating light-induced electronic dynamics in molecular dimers using
angularly resolved photoelectron spectroscopy with intense laser pulses.

22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga