Emission characteristics of a charged-droplet beam source using vacuum electrospray of an ionic liquid

Yukio Fujiwara, Naoaki Saito, Hidehiko Nonaka, Shingo Ichimura

研究成果: Article査読

7 被引用数 (Scopus)

抄録

To develop an ion source capable of producing a charged-droplet beam at higher current density with a smaller beam spot size, beam characteristics of electrosprayed charged particles were investigated. A quaternary ammonium ionic liquid, N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl) amide (DEME-TFSA), was tested in vacuum around 10-5 Pa. A hysteresis behavior in the electrosprayed current was observed when the capillary voltage was changed. The m/z values of generated charged droplets decreased with decreasing flow rate and increasing capillary voltage and temperature. Average masses and charge numbers of the charged droplets as well as projectile energy per nucleon were estimated on the basis of the experimental results.

本文言語English
ページ(範囲)517-521
ページ数5
ジャーナルSurface and Interface Analysis
45
1
DOI
出版ステータスPublished - 2013 1
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 材料化学

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