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Autoionization following nanoplasma formation in atomic and molecular clusters

Schütte, Bernd; Lahl, Jan LU ; Oelze, Tim; Krikunova, Maria; Vrakking, Marc J. J. and Rouzée, Arnaud (2016) In European Physical Journal D 70(5).
Abstract

Abstract: Nanoplasmas resulting from the ionization of nano-scale particles by intense laser pulses are typically described by quasiclassical models, where electron emission is understood to take place via thermal processes. Recently, we discovered that, following the interaction of intense near-infrared (NIR) laser pulses with molecular oxygen clusters, electron emission from nanoplasmas can also occur from atomic bound states via autoionization [Schütte et al., Phys. Rev. Lett. 114, 123002 (2015)]. Here we extend these studies and demonstrate that the formation and decay of doubly-excited atoms and ions is a very common phenomenon in nanoplasmas. We report on the observation of autoionization involving spin-orbit excited states in... (More)

Abstract: Nanoplasmas resulting from the ionization of nano-scale particles by intense laser pulses are typically described by quasiclassical models, where electron emission is understood to take place via thermal processes. Recently, we discovered that, following the interaction of intense near-infrared (NIR) laser pulses with molecular oxygen clusters, electron emission from nanoplasmas can also occur from atomic bound states via autoionization [Schütte et al., Phys. Rev. Lett. 114, 123002 (2015)]. Here we extend these studies and demonstrate that the formation and decay of doubly-excited atoms and ions is a very common phenomenon in nanoplasmas. We report on the observation of autoionization involving spin-orbit excited states in molecular oxygen and carbon dioxide clusters as well as in atomic krypton and xenon clusters ionized by intense NIR pulses, for which we find clear bound-state signatures in the electron kinetic energy spectra. By applying terahertz (THz) streaking, we show that the observed autoionization processes take place on a picosecond to nanosecond timescale after the interaction of the NIR laser pulse with the clusters. Graphical abstract: [Figure not available: see fulltext.]

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author
organization
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type
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publication status
published
subject
in
European Physical Journal D
volume
70
issue
5
publisher
EDP Sciences
external identifiers
  • scopus:84971283949
  • wos:000376166600004
ISSN
1434-6060
DOI
10.1140/epjd/e2016-60727-3
language
English
LU publication?
yes
id
385c861a-3702-4027-a0b3-6c175aa71cbc
date added to LUP
2017-02-23 16:26:56
date last changed
2017-09-18 11:35:03
@article{385c861a-3702-4027-a0b3-6c175aa71cbc,
  abstract     = {<p>Abstract: Nanoplasmas resulting from the ionization of nano-scale particles by intense laser pulses are typically described by quasiclassical models, where electron emission is understood to take place via thermal processes. Recently, we discovered that, following the interaction of intense near-infrared (NIR) laser pulses with molecular oxygen clusters, electron emission from nanoplasmas can also occur from atomic bound states via autoionization [Schütte et al., Phys. Rev. Lett. 114, 123002 (2015)]. Here we extend these studies and demonstrate that the formation and decay of doubly-excited atoms and ions is a very common phenomenon in nanoplasmas. We report on the observation of autoionization involving spin-orbit excited states in molecular oxygen and carbon dioxide clusters as well as in atomic krypton and xenon clusters ionized by intense NIR pulses, for which we find clear bound-state signatures in the electron kinetic energy spectra. By applying terahertz (THz) streaking, we show that the observed autoionization processes take place on a picosecond to nanosecond timescale after the interaction of the NIR laser pulse with the clusters. Graphical abstract: [Figure not available: see fulltext.]</p>},
  articleno    = {115},
  author       = {Schütte, Bernd and Lahl, Jan and Oelze, Tim and Krikunova, Maria and Vrakking, Marc J. J. and Rouzée, Arnaud},
  issn         = {1434-6060},
  language     = {eng},
  number       = {5},
  publisher    = {EDP Sciences},
  series       = {European Physical Journal D},
  title        = {Autoionization following nanoplasma formation in atomic and molecular clusters},
  url          = {http://dx.doi.org/10.1140/epjd/e2016-60727-3},
  volume       = {70},
  year         = {2016},
}