Particle emission from polymer-doped water ice matrices induced by non-linear absorption of laser light at 1064 nm

A. Purice, Jørgen Schou, M. Dinescu

    Research output: Contribution to journalJournal articlepeer-review

    Abstract

    Emission of PEG (polyethylene glycol) molecules and ions from an ice target induced by laser irradiation in the infrared (IR) regime at 1064 nm was studied. Matrices of 1 wt% PEG flash-frozen solutions were used for polymer deposition with MAPLE (matrix assisted pulsed laser evaporation). Even though linear absorption in defect-free water ice is two orders of magnitude larger at 1064 ran than 355 nm, the deposition rate and ion current density are much smaller for IR than for ultraviolet laser light. The similarity of results for both wavelengths indicates that non-linear absorption by electrons via optical breakdown is dominant. (c) 2006 Elsevier B.V. All rights reserved.
    Original languageEnglish
    JournalChemical Physics Letters
    Volume427
    Issue number4-6
    Pages (from-to)251-254
    ISSN0009-2614
    DOIs
    Publication statusPublished - 2006

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