The temperature dependence of the energy distribution of the beam emitted by an Au82Si18 liquid metal field-ion emitter
نویسندگان
چکیده
The energy distribution of the monomer ion species is studied as a function of emitter temperature for an Au82Si18 eutectic liquid metal alloy ion source (LMAIS). Secondary peaks, or shoulders, in the distribution of some of the species are explained in terms of Hornsey’s model, which involves the fast movement of the jet in conjunction with a space– charge energy broadening mechanism within the beam. Moreover, the results confirm an earlier conclusion that whereas Auþ, Siþ and Siþþ are emitted by direct field-evaporation from the liquid surface, Auþþ forms by the post ionization of Auþ. 2004 Elsevier B.V. All rights reserved. PACS: 07.77.Ka; 41.75.Ak; 61.25.Mv
منابع مشابه
تفنگ الکترونی با باریکه پهن: رویکردی تجربی
Electron curtain accelerator is a type of low-energy electron accelerator, which plays an important role in many different industries such as printing, coating and packing to promote product quality, while reducing volatile organic compounds for protecting global environment. Electron emitter is one of the main components of this type of accelerators. Multi-filament cathodes and grid structures...
متن کاملSupported Liquid Membrane in Metal Ion Separation: An Overview
Using liquid membrane and, in particular, supported liquid membrane (SLM) is a novel method of separation in comparison to other methods such as adsorption, extraction and ion exchange. SLM is a combination of simultaneous extraction and disposal whose high efciency and capability is proven by many studies. So far, many researchers have utilized SLM in various scientifc...
متن کاملStable field-induced electron emission from a solidified liquid metal ion source
Stable field-induced electron emission is derived from a tungsten tip covered by indium which has been solidified from its liquid state during an ion emission process. By choosing different ion emission currents at the beginning of the solidification process, the final geometry of the solidified emitter can be reshaped and the characteristics of the electron emission changed. The Fowler– Nordhe...
متن کاملNumerical Study of Electro-thermo-convection in a Differentially Heated Cavity Filled with a Dielectric Liquid Subjected to Partial Unipolar Injection
The Coulomb force applied by an electric field on any charge present in a dielectric liquid may cause fluid motion. At high applied electric fields in an insulating liquid, electric charge carriers are created at metallic/liquid interfaces, a process referred to as ion injection, and result from electrochemical reactions. In this article we deals with the problem of electro thermal convection i...
متن کاملRadiation-induced solidification of ionic liquid under extreme electric field.
An extreme electric field on the order of 10(10) V m(-1) was applied to the free surface of an ionic liquid to cause electric-field-induced evaporation of molecular ions from the liquid. The point of ion emission was observed in situ using a TEM. The resulting electrospray emission process was observed to create nanoscale high-aspect-ratio dendritic features that were aligned with the direction...
متن کامل