This content has been downloaded from IOPscience. Please scroll down to see the full text. Download details: IP Address: 128.111.121.42 This content was downloaded on 02/09/2015 at 13:53 Please note that terms and conditions apply. Optical properties of planar immersion objectives in electron impact ion sources View the table of contents for this issue, or go to the journal homepage for more 1996 Meas. Sci. Technol. 7 535 (http://iopscience.iop.org/0957-0233/7/4/011) Home Search Collections Journals About Contact us My IOPscience