This study develops a soft X-ray absorption spectroscopy system for photo-excited material dynamics with one-dimensional spatial resolution. The system consists of a femtosecond-laser-produced plasma X-ray source and a critical illumination system using a KB microscope and has a temporal resolution of approximately 30 ps and a spatial resolution of at least better than 25 /spl mu/m. Snapshots of expanding aluminum plasma as spatially resolved absorption spectra are successfully obtained. The captured images show the blue shift of the Al L/sub II,III/ absorption edge caused by ionization in the ablated plasma. From the amount of soft X-ray absorption, the mean particle density near the target surface 5 ns after the laser pulse irradiation is estimated to be of the order of 10/sup 19/ cm/sup -3/.


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    Titel :

    Spatiotemporal evolution of soft X-ray absorption in an ablated particle cloud created by a 100-fs laser pulse on an aluminum target


    Beteiligte:
    Nakano, H. (Autor:in) / Okano, Y. (Autor:in) / Oguri, K. (Autor:in) / Nishikawa, T. (Autor:in)


    Erscheinungsdatum :

    2005-01-01


    Format / Umfang :

    304990 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






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