X‐ray spectroscopic diagnostics of a copper plasma produced by a laser line focused onto a thin foil

  title={X‐ray spectroscopic diagnostics of a copper plasma produced by a laser line focused onto a thin foil},
  author={T. N. Lee and William A. Molander and J. L. C. Ford and Raymond C. Elton},
  journal={Review of Scientific Instruments},
A 500‐J, 2–6‐ns, Nd laser was focused to a 100‐μm‐wide line on a thin (375–1500 A) copper film of 4–23 mm length, supported by a 1500‐A thick Formvar substrate. Space‐resolved 8–16‐A wavelength x‐ray spectroscopy and pinhole photography were utilized. The main spectral features include intense neon‐like Cu xx lines, and somewhat less intense Cu xix and xxi lines. Two types of axial structure are observed, one characterized by a finely (≲100 μm) corrugated structure, and the other by a mm scale… 
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