Collimation properties of a laser ion source measured using the multichannel Faraday cup

Tamura, Koji

The collimation properties of a Neodymium ion beam extracted from a laser photoionized plasma were measured by scanning a multichannel Faraday cup. The ion beam was collimated at the position of the Faraday cup by the electric field produced with a pair of semispherical electrodes set at the extraction electrode. The central ion beam intensity was increased about 36 times. The results were useful for the applications of laser photoionized ion source.