Soft x-ray amplification in aluminium recombining plasma produced from a thin coated fibre

A. Carillon*, M. J. Edwards, M. Grande, M. J.C. Henshaw, P. Jaegle, G. Jamelot, M. H. Key, G. P. Kiehn, A. Klisnick, C. L.S. Lewis, D. O'Neill, G. J. Pert, S. A. Ramsden, C. M.E. Regan, S. J. Rose, R. Smith, O. Willi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Thin carbon fibres, coated with aluminium, are irradiated with approximately=120 ps, 0.53 mu m laser pulses yielding a specific absorbed energy of approximately=4 J cm-1 and time-resolved gain measurements on the n=4-3 and n=5-3 transitions of lithium-like Al XI ions in the recombining plasma are made. In particular, gain on the 4f-3d line at 15.4 nm is measured with alpha max approximately=2-3 cm-1 using both single-shot and multi-shot techniques. Gain measurements from multi-shot data on the 5f-3d line at 10.6 nm indicate alpha max approximately=1.5 cm-1. Observations are compared with theoretical calculations, discrepancies are noted and the need for reproducible plasma conditions in low gain-length product data sets is discussed.

Original languageEnglish
Article number015
Pages (from-to)147-163
Number of pages17
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume23
Issue number1
DOIs
Publication statusPublished - 1990

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