Soft x-ray spectra of highly ionized elements with atomic numbers ranging from 57 to 82 produced by compact lasers

• G. M. Zeng

  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan

• H. Daido

  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan

• T. Nishikawa

  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan

• H. Takabe

  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan

• S. Nakayama

  Research Center for Extreme Materials, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560, Japan

• H. Aritome

  Research Center for Extreme Materials, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560, Japan

• K. Murai

  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan

• Y. Kato

  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan

• M. Nakatsuka

  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan

• S. Nakai

  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan

Abstract

X-ray emission spectra in the spectral range of 2–13 nm from 19 kinds of material with high atomic numbers (lanthanum through lead) were recorded with a grazing incidence spectrometer equipped with a microchannel plate detector. There is an intense, narrow spectral band in these spectra which shifts toward shorter wavelength and becomes weak in intensity with increasing atomic number. The materials were irradiated either by a 4 J/35 ns slab Nd:glass laser or by a 0.5 J/8 ns Nd:YAG laser. The absolute photon intensities of the spectra were determined with an absolutely calibrated charge coupled device camera. The peak spectral brightness of the emission at the peak intensity of the spectral band for lanthanum plasma was estimated to be 2.1×1016 photons/s/mm2/mrad2 in 0.1% bandwidth. The origin of the narrow, intense spectral bands in the recorded spectra and their dependence on target materials and laser wavelength are interpreted.

Journal

• Journal of Applied Physics

  Journal of Applied Physics 75 (4), 1923-1930, 1994-02-15

  AIP Publishing

Keywords

• General Physics and Astronomy

Details

• CRID: 1361699995648158336
• NII Article ID: 30015852852
• NII Book ID: AA00693580
• DOI: 10.1063/1.356339
• ISSN: 10897550
• ISSN: 00218979
• Web Site: https://pubs.aip.org/aip/jap/article-pdf/75/4/1923/18663685/1923_1_online.pdf
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