Title :
Evaluation of a Neon Focused Field Ion Source: Fabrication and Characteristics
Author_Institution :
Dept. of Phys., Mutah Univ., Karak
Abstract :
A new type of gaseous field ion source, operated with the inert gas neon, was developed. The source material used was the equiatomic B 2-ordered Ni-Al alloy doped with small amounts of W and C. Small surface protrusions were formed by the field evaporation of the multiphase alloy containing ultrafine spherical precipitates. The emission current-voltage characteristics were recorded as a function of neon gas pressure and source temperature. Total source current densities of up to 6 nA were obtained. A source temperature just above the condensation point of Ne gas was found to generate the highest ion current
Keywords :
aluminium alloys; boron alloys; carbon; field evaporation; field ion emission; nickel alloys; precipitation; tungsten; 6 nA; C doping; NiAlB2:W,C; W doping; condensation point; emission current-voltage characteristics; equiatomic B2-ordered alloy; field evaporation; gaseous field ion source; inert gas; ion current; multiphase alloy; neon focused field ion source; neon gas pressure; source temperature; surface protrusions; total source current densities; ultrafine spherical precipitates; Argon; Current density; Fabrication; Focusing; Gases; Helium; Ion sources; Physics; Temperature; Voltage;
Conference_Titel :
Vacuum Nanoelectronics Conference, 2006 and the 2006 50th International Field Emission Symposium., IVNC/IFES 2006. Technical Digest. 19th International
Conference_Location :
Guilin
Print_ISBN :
1-4244-0401-0
DOI :
10.1109/IVNC.2006.335271
