Plasma World

In this site, all the topics related to plasma applications such as coatings, etchings, surface treatments in flat panel, touch panel, solar cell, MEMS……

February, 2012

What’s the difference between the intensity listed in the database and the actual measurement?

This is an interesting question asked often while one touches and senses the plasma by optical emission spectrometry.   The radiation we are measuring with the EmiCon OES system is due to a two-step process in the plasma: 1. Ground state atoms are excited by electron collisions in higher electronic levels. The density of the [...]