Optimization of plasma uniformity in laser-irradiated underdense targets M.S. Tillack, K.L. Sequoia, J. O'Shay, C.A. Back and H.A. Scott J. Phys. IV France, 133 (2006) 985-988 Published online: 16 June 2006 DOI: 10.1051/jp4:2006133198