An in-depth investigation of the energy distribution of doubly charged ions emitted from a liquid metal alloy ion source

被引：2

作者：

Mair, GLR

Bischoff, L

Mair, AWR

Aidinis, CJ ^{[1
]}

Ganetsos, T

Aleiev, CA

机构：

[1] Univ Athens, Sect Appl Phys, Dept Phys, GR-15784 Athens, Greece

[2] Univ Athens, Sect Solid State Phys, Dept Phys, GR-15784 Athens, Greece

[3] Res Ctr Rossendorf Inc, Inst Ion Beam & Mat Res, D-01314 Dresden, Germany

[4] Univ Manchester, Fac Sci & Engn, Manchester M13 9P2, Lancs, England

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2002年 / 35卷 / 09期

关键词：

D O I：

10.1088/0022-3727/35/9/101

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate the energy spread, DeltaE(1/2), versus emission current, i, of the doubly charged ions emitted by a Au77Ge14Si9 liquid metal alloy ion source. For the ionic species of main interest, namely Ge2+, two modes were found with regard to the dependence of DeltaE(1/2) on i. In the first mode DeltaE(1/2) proportional to i(0.3), and in the second DeltaE(1/2) proportional to i. The difference is attributed to changes in the composition of the alloy during field evaporation. Au2+ and Si2+ were also found to obey a DeltaE(1/2) proportional to i(0.3) law; in the case of Si2+ however, there is a deviation from this law at high currents.

引用

页码：L33 / L36

页数：4

共 16 条

[1] A study of the temperature dependence of the energy spread and energy deficit of a Ge++ ion beam produced by a liquid metal alloy ion source [J].