Abstract

Multielectron, nonsequential ionization has been measured up to Xe<sup>11+</sup>. The data shows rescattering collisions at 10<sup>16</sup>W/cm<sup>2</sup> to 10<sup>17</sup>W/cm<sup>2</sup> and across electron shells. A rescattering deflection parameter predicts the change from the strong to ultrastrong field.

© 2006 Optical Society of America

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