Ionization of clusters in strong x-ray laser pulses

The effect of intense x-ray laser interaction on argon clusters is studied theoretically with a mixed quantum/classical approach. In comparison to a single atom we find that ionization of the cluster is suppressed, which is in striking contrast to the observed behavior of rare-gas clusters in intens...

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Veröffentlicht in:Physical review letters 2002-09, Vol.89 (14), p.143401-143401, Article 143401
Hauptverfasser: Saalmann, Ulf, Rost, Jan-Michael
Format: Artikel
Sprache:eng
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Zusammenfassung:The effect of intense x-ray laser interaction on argon clusters is studied theoretically with a mixed quantum/classical approach. In comparison to a single atom we find that ionization of the cluster is suppressed, which is in striking contrast to the observed behavior of rare-gas clusters in intense optical laser pulses. We have identified two effects responsible for this phenomenon: A high space charge of the cluster in combination with a small quiver amplitude and delocalization of electrons in the cluster. We elucidate their impact for different field strengths and cluster sizes.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.89.143401