Author Affiliations

G J Tallents,^1,*,** A Behjat,¹ A Demir,¹ J Y Lin,¹ R Smith,¹ C L S Lewis,² A MacPhee,² S P McCabe,² P J Warwick,² D Neely,³ E Wolfrum,³ J Zhang,⁴ G J Pert,⁵ P V Nickles,⁶ M Kalashnikov,⁶ and M Schnürer⁶

¹Department of Physics, University of Essex, Colchester CO4 3SQ, England.

²Department of Pure and Applied Physics, Queen’s University Belfast, Belfast BT7 INN, Northern Ireland.

³Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, England.

⁴Clarendon Laboratory, University of Oxford, Oxford OX1 3 PU, England.

⁵Department of Physics, University of York, York YO1 5DD, England.

⁶Max-Born-Institut, Rudower Chaussee 6, 12489 Berlin, Germany.

^*Presented by Greg Tallents, Department of Physics, University of Essex, Colchester Co4 3SQ, England. Tel. + 44 1206 87 2847 Fax. + 44 1206 873598

^** tallg@essex.ac.uk