| 摘要 |
PROBLEM TO BE SOLVED: To realize improvement in direction accuracy or the like when securing a needle-shaped body to a filament. SOLUTION: In a reserver 1, a liquid metal to be ionized is accommodated. To a reserver 1, a needle-shaped body 2 whose surface is wet by a melted liquid metal is connected. At the intermediate part of a filament 40 to heat the liquid metal, a loop part 30L is formed, and the needle-shaped body 2 is secured at two points of the loop part 30L. COPYRIGHT: (C)2004,JPO&NCIPI
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