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Investigation of gain and hyperfine splitting in the niobium X-ray laser

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Abstract

Neon-like niobium X-ray lasers have been studied using both slab and thin-foil target geometries. Niobium foils of various lengths were irradiated from both sides with two beams of the frequency-doubled Nova laser system using a line focus. We looked for gain by measuring spectrally integrated line intensities at different plasma lengths. Gain was observed in four neon-like niobium lines corresponding to 3s−3p transitions. The line profile of theJ = 0−1 line (λ = 145.9 Å) shows splitting due to the hyperfine effect. Improved contrast in the hyperfine structure is observed as the plasma length is increased. Hyperfine splitting may be relevant to other 3s−3p transitions in neon-like niobium as well as other neon-like X-ray laser systems.

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Authors and Affiliations

  1. Lawrence Livermore National Laboratory, L-59, P.O. Box 808, 94550, Livermore, CA, USA

    J. C. Moreno, J. Nilsen, J. A. Koch, B. J. MacGowan, J. H. Scofield & L. B. Da Silva

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  1. J. C. Moreno
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  2. J. Nilsen
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  3. J. A. Koch
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  4. B. J. MacGowan
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  5. J. H. Scofield
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  6. L. B. Da Silva
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Moreno, J.C., Nilsen, J., Koch, J.A. et al. Investigation of gain and hyperfine splitting in the niobium X-ray laser. Appl. Phys. B 58, 3–5 (1994). https://doi.org/10.1007/BF01081705

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