Emission characteristics of a charged-droplet beam source using vacuum electrospray of an ionic liquid
Emission characteristics of a charged-droplet beam source using vacuum electrospray of an ionic liquid
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使用离子液体真空电喷雾的带电液滴束源的发射特性
DOI：
10.1002/sia.5071
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发表时间：
2013
影响因子：
1.7
通讯作者：
Shingo Ichimura
中科院分区：
文献类型：
--
作者：
Yukio Fujiwara;Naoaki Saito;Hidehiko Nonaka;Shingo Ichimura
为了开发能够以更小的束斑尺寸在更高的电流密度下产生带电液滴束的离子源，研究了电喷雾带电粒子的束特性。季铵离子液体，N，N-二乙基-N-甲基-N-（2-甲氧基乙基）铵双（三氟甲磺酰基）酰胺（DEME-TFSA），在约10 - 5 Pa的真空中测试。当毛细管电压改变时，观察到电喷雾电流的滞后行为。所产生的荷电液滴的Them/z值随着流速的降低和毛细管电压和温度的增加而降低。根据实验结果估算了带电液滴的平均质量和电荷数以及每个核子的抛射能量。版权所有© 2012约翰威利父子有限公司.
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 10−5Pa. A hysteresis behavior in the electrosprayed current was observed when the capillary voltage was changed. Them/zvalues 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. Copyright © 2012 John Wiley & Sons, Ltd.