Density and x-ray emission profile relationships in highly ionized high- Z laser-produced plasmas

Kensuke Yoshida, Shinsuke Fujioka, Takeshi Higashiguchi, Teruyuki Ugomori, Nozomi Tanaka, Masato Kawasaki, Yuhei Suzuki, Chihiro Suzuki, Kentaro Tomita, Ryoichi Hirose, Takeo Ejima, Hayato Ohashi, Masaharu Nishikino, Atsushi Sunahara, Bowen Li, Padraig Dunne, Gerry O'Sullivan, Tatsuya Yanagida, Hiroshi Azechi, Hiroaki Nishimura

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    We present a benchmark measurement of the electron density profile in the region where the electron density is 1019cm-3 and where the bulk of extreme ultraviolet (EUV) emission occurs from isotropically expanding spherical high-Z gadolinium plasmas. It was found that, due to opacity effects, the observed EUV emission is mostly produced from an underdense region. We have analyzed time-resolved emission spectra with the aid of atomic structure calculations and find the multiple ion charge states around 18+ during the laser pulse irradiation.

    Original languageEnglish
    Article number121109
    JournalApplied Physics Letters
    Volume106
    Issue number12
    DOIs
    Publication statusPublished - 2015 Mar 23

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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