Patent ID: 9236215
Filing Date: 2016-01-12
CPC Classification: H01J

Claim Text:
1. A system for generating a beam of fast ions, the system comprising: a target substrate having a patterned surface, a pattern comprising three-dimensional nanoscale pattern features oriented substantially uniformly along a common axis and having a characteristic width not exceeding 10 lambda, length of at least one lambda and wherein the patterned surface has a thickness of at least 1 μm; and a beam unit adapted for receiving a high power coherent polarized electromagnetic radiation beam and providing an electromagnetic radiation beam having a main pulse and a pre-pulse and focusing it onto said patterned surface of the target substrate to cause interaction between said radiation beam and said substrate to produce fast ions; and wherein the system is configured to control the efficiency with which the high power coherent polarized electromagnetic radiation beam produces a flux of fast ions by controlling the angle of polarization direction relative to the direction of nano-scale feature orientation.