Dr. T. Pradeep, noted professor and scientist based at the Indian Institute for Science and Technology (IIT) has taken receipt of an Ultra-Low Energy Ion Scattering system from Extrel CMS, LLC. The VeraSpec LEIS (Low Energy Ion Scattering) system has capabilities for mass and energy selected deposition at temperatures down to 10 Kelvin, ion scattering and secondary ion monitoring experiments, infrared and Raman spectroscopy, and temperature programmed desorption.
该系统的设计与IIT和Extrel之间的密切合作设计，并结合了Pradeep研究小组的实验专业知识，以及Extrel的高性能质谱仪系统和真空设计经验。
Extrel向印度技术研究所提供超低能源离子散射光谱仪系统。
The Pradeep research Group at IIT Madras is involved with the discovery and application of novel materials. Most often the constituents of these materials are 'nano' objects. The group explores the possibility of discovering novel physical and chemical properties of these objects. The delivery of the VeraSpec LEIS to one of the most state-of-the-art centers for chemical research extends the group's ability to study surface chemistry. Dr. Pradeep describes the key elements of their research this way:
"While molecular liquids and gases have been investigated extensively throughout the history of science, very little is known about the science, especially chemistry, of their solid state analogues. These solids in various forms are present throughout the universe and processes on them have relevance to interstellar chemistry, atmospheric processes of several planets, astrobiology, etc. These studies are also relevant from the perspective of molecular chemistry and physics. Low energy ion scattering (LEIS) is an important experimental tool to investigate events at the very top of molecular surfaces. Unlike photons and electrons, ions at low energies interact only with the top chemical bond. The energy of the ion is close to chemical bond energies and that makes it possible to observe chemically relevant processes.This makes LEIS a unique tool. In our experiment, diverse molecular solids grown on metal single crystals at cryogenic temperatures will be collided with mass and energy selected ions. The energy regime is the order of a few eV and the scattered and product ions will be mass analyzed. The surfaces could be stimulated with ultraviolet photons. The surface in transition itself will be probed with reflection absorption infrared spectroscopy, high energy secondary ion mass spectrometry,thermal desorption spectroscopy and Raman spectroscopy. All of these have to be done at extremely clean vacuum as the surfaces should not be altered at the very top.
Our studies will yield complete understanding of ion induced chemical processes occurring at the top surfaces of molecular solids. The results will give an in-depth view of chemistry at the inaccessible molecular soup present in the interstellar space, besides providing a fundamental understanding of a branch of materials hitherto unexplored."
Extrel CMS，LLC是研究和行业的四极质谱仪系统和组件的主要供应商。VeraSpec产品线涵盖了Extrel的最佳质谱仪技术，该技术纳入了用于研究应用的系统中。VeraSpec Leis是协作设计工作的一个示例，旨在为基于离子光学和质谱仪专业知识的特定研究功能创建独特的系统。T. Pradeep：“ Extrel是一个组织，将科学家对未知数的追求与最终分子探针 - 离子 - 离子融为一体。”
Extrel提供最佳质谱仪技术并与客户紧密合作的悠久历史使Extrel提供了高效的研究工具。T. Pradeep：“对我来说，Extrel一直与我同在探索未知的道路上。这是多年来对技术的信念，这是由几个人的承诺所养育的。我发现这是一个真正的朋友。”
For more information on Extrel CMS, LLC visitwww.extrel.com.