<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>1770</id>
    <completedYear>2023</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>25</volume>
    <type>article</type>
    <publisherName>Institute of Physics (IOP)</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Long-lasting XUV activation of helium nanodroplets for avalanche ionization</title>
    <abstract language="eng">We study the dynamics of avalanche ionization of pure helium nanodroplets activated by a weak extreme-ultraviolet (XUV) pulse and driven by an intense near-infrared (NIR) pulse. In addition to a transient enhancement of ignition of a nanoplasma at short delay times ${\sim}200$ fs, long-term activation of the nanodroplets lasting up to a few nanoseconds is observed. Molecular dynamics simulations suggest that the short-term activation is caused by the injection of seed electrons into the droplets by XUV photoemission. Long-term activation appears due to electrons remaining loosely bound to photoions which form stable 'snowball' structures in the droplets. Thus, we show that XUV irradiation can induce long-lasting changes of the strong-field optical properties of nanoparticles, potentially opening new routes to controlling avalanche-ionization phenomena in nanostructures and condensed-phase systems.</abstract>
    <parentTitle language="eng">New Journal of Physics</parentTitle>
    <identifier type="urn">urn:nbn:de:kobv:526-opus4-17701</identifier>
    <enrichment key="opus.import.data">@articleMedina_2023, doi = 10.1088/1367-2630/acd5f6, url = https://dx.doi.org/10.1088/1367-2630/acd5f6, year = 2023, month = may, publisher = IOP Publishing, volume = 25, number = 5, pages = 053030, author = C Medina and A Ø Lægdsmand and L Ben Ltaief and Z Hoque and A H Roos and L Jurkovičová and O Hort and O Finke and M Albrecht and J Nejdl and F Stienkemeier and J Andreasson and E Klimešová and M Krikunova and A Heidenreich and M Mudrich, title = Long-lasting XUV activation of helium nanodroplets for avalanche ionization, journal = New Journal of Physics, abstract = We study the dynamics of avalanche ionization of pure helium nanodroplets activated by a weak extreme-ultraviolet (XUV) pulse and driven by an intense near-infrared (NIR) pulse. In addition to a transient enhancement of ignition of a nanoplasma at short delay times  fs, long-term activation of the nanodroplets lasting up to a few nanoseconds is observed. Molecular dynamics simulations suggest that the short-term activation is caused by the injection of seed electrons into the droplets by XUV photoemission. Long-term activation appears due to electrons remaining loosely bound to photoions which form stable ‘snowball’ structures in the droplets. Thus, we show that XUV irradiation can induce long-lasting changes of the strong-field optical properties of nanoparticles, potentially opening new routes to controlling avalanche-ionization phenomena in nanostructures and condensed-phase systems.</enrichment>
    <enrichment key="opus.import.dataHash">md5:2286a4ca37664d1b83b0a3628525b361</enrichment>
    <enrichment key="opus.import.date">2023-07-19T07:04:56+00:00</enrichment>
    <enrichment key="opus.import.file">/tmp/phpIjh2Ct</enrichment>
    <enrichment key="opus.import.format">bibtex</enrichment>
    <enrichment key="opus.import.id">64b78b1817cac9.61746059</enrichment>
    <enrichment key="DOI_VoR">https://doi.org/10.1088/1367-2630/acd5f6</enrichment>
    <enrichment key="SourceTitle">C Medina et al 2023 New J. Phys. 25 053030</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Cristian Medina</author>
    <author>Asbjørn Ørnemark Lægdsmand</author>
    <author>Ltaief Ben Ltaief</author>
    <author>Ziaul Hoque</author>
    <author>Andreas Hult Roos</author>
    <author>Lucie Jurkovičová</author>
    <author>Ondřej Hort</author>
    <author>Ondřej Finke</author>
    <author>Martin Albrecht</author>
    <author>Jaroslav Nejdl</author>
    <author>Frank Stienkemeier</author>
    <author>Jakob Andreasson</author>
    <author>Eva Klimešová</author>
    <author>Maria Krikunova</author>
    <author>Andreas Heidenreich</author>
    <author>Marcel Mudrich</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>nanoplasma</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>helium nanodroplet</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>pump–probe spectroscopy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>avalanche ionization</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>high-harmonic generation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>extreme ultraviolet</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">Fachbereich Ingenieur- und Naturwissenschaften</collection>
    <collection role="open_access" number="">open_access</collection>
    <collection role="green_open_access" number="1">Gold Open Access</collection>
    <thesisPublisher>Technische Hochschule Wildau</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-th-wildau/files/1770/Medina_2023_New_J._Phys._25_053030.pdf</file>
  </doc>
</export-example>
