D.J. Ampleford (1), S.V. Lebedev (2), A. Ciardi (3), S.N. Bland (2),
  S.C. Bott (2), G.N. Hall (2), N. Naz (2), C.A. Jennings (1), M. Sherlock (2),
  J.P. Chittenden (2), J.B.A.Palmer (2), A. Frank (4), E. Blackman (4) ((1)
  Sandia National Laboratories, USA (2) Imperial College, UK (3) Observatoire
  de Paris, France (4) Department of Physics and Astronomy, and Laboratory for
  Laser Energetics, University of Rochester, USA)