Precision X-ray spectroscopy of intense laser-plasma interactions

N. C. Woolsey, R. J. Clarke, D. Doria, L. A. Gizzi, G. Gregori, P. Hakel, S. B. Hansen, P. Koester, L. Labate, T. Levato, B. Li, M. Makita, R. C. Mancini, J. Pasley, P. P. Rajeev, A. P. L. Robinson, E. Wagenaars, J. N. Waugh, N. Booth

Research output: Contribution to journalArticlepeer-review


Polarisation sensitive emission spectroscopy measurements are reported for a petawatt laser-solid target interaction at intensities up to 5 x 10(20) Wcm(-2). These measurements were single-shot and used pairs of highly-orientated graphite spectrometers to resolve the sulphur Ly-alpha doublet. The sulphur Ly-alpha(1) component shows a large positive polarisation indicative of a low energy electron beam in the plasma, the Ly-alpha(2) component acts as a cross-spectrometer calibration. The measurements show a significant anisotropic or beam-like component to a cold return current. (C) 2011 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)105-109
Number of pages5
Issue number2
Publication statusPublished - Jun 2011

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