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arXiv 1105.0499physics.atom-phphysics.ins-det
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静电离子束阱:无限质量范围的mass spectrometer

The Electrostatic Ion Beam Trap : a mass spectrometer of infinite mass range

Alexandre Vallette, Csilla Szabo Foster, Paul Indelicato

摘要:

本文研究了静电离子阱(EIBT)中离子的动力学行为,证明了阱的稳定性受希尔方程的控制。这出乎意料地表明,在离子的参考系中,EIBT的工作非常类似于四极阱。这两种陷阱之间的平行性通过比较EIBT的实验和理论稳定性图来说明。与四极阱的主要区别在于,稳定性仅取决于加速和捕获静电势的比率,而不取决于离子的质量和电荷。所有种类的离子可以被同时捕获,并且由于参数共振与电荷/质量比的平方根成比例,因此EIBT可以用作无限质量范围的质谱仪。

英文摘要:

We study the ions dynamics inside an Electrostatic Ion Beam Trap (EIBT) and show that the stability of the trapping is ruled by a Hill's equation. This unexpectedly demonstrates that an EIBT, in the reference frame of the ions works very similar to a quadrupole trap. The parallelism between these two kinds of traps is illustrated by comparing experimental and theoretical stability diagrams of the EIBT. The main difference with quadrupole traps is that the stability depends only on the ratio of the acceleration and trapping electrostatic potentials, not on the mass nor the charge of the ions. All kinds of ions can be trapped simultaneously and since parametric resonances are proportional to the square root of the charge/mass ratio the EIBT can be used as a mass spectrometer of infinite mass range.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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