Soft-x-ray amplification at 50.3 å in nickellike ytterbium

B. J. Mac Gowan, S. Maxon, C. J. Keane, R. A. London, Dennis L Matthews, D. A. Whelan

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


Nickellike ions of ytterbium (Yb42+) have been produced in long exploding foil plasmas. The plasmas were formed by short-pulse laser irradiation of thin foils of ytterbium with line-focused high-intensity 0.53-, um light. Soft-x-ray line emissions at 50.26 and 56.09 Å are identified as 4d-4p, J = 0-1 transitions in the nickellike ionization stage of ytterbium. The energy emitted in the line at 50.26 Å along the axis of the plasma is observed to increase nonlinearly with plasma length, consistent with a small-signal gain of 1.2 ± 0.4 cm-1.

Original languageEnglish (US)
Pages (from-to)1858-1863
Number of pages6
JournalJournal of the Optical Society of America B: Optical Physics
Issue number9
StatePublished - 1988
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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