I like the three steps you list. Gonna make use of it somewhere. Doug Pauls From: Inge Hernefjord <[log in to unmask]> To: <[log in to unmask]> Date: 03/09/2013 12:24 PM Subject: [TN] Dropbox Sent by: TechNet <[log in to unmask]> Mornmidafternevning, I added a report under Analysis methods. One of many jobs where I used TOFSIMS (Time Of Flight Secondary Ion Mass Spectrometry). A very useful way to determine the outmost superficial atom layers. The reason why it is not used so often is the cost per hour. It is not very complicated, even if the machine is a veritable monster. You 'simply' bombard the surface you want analyze with emitted ions via a pulsed source. This ion beam knocks out ions from the very outermost single atom layer of the target, therefore they are named 'secondary' ions. These ions are accelerated (attraction) against a voltage biased plate, but they must pass a tube first. The time it takes to 'fly' is dependent on the ion's mass, and hence the time of flight tells you what element. You can multiply the beam intensity and knock out so many ions that you create an etching, repeat these steps and make measurements in between and ,alas, a depth profile. TOFSIMS consist of three steps: 1. The skilled operator knows all about the machine, makes the routines and leaves kilograms of paper or Megs of data to the guy who is often a pinhole higher on the education steps. 2.He is often addressed professor and he tailors the report in a suitable academic costume to the customer, whereby the weight of the report seems to be a matter of importance. 3The customer has the nightmare job to understand what the learned man has written. Not seldom, we pay a fortune for a exclusive and fat report, shake our heads and do our own surveys. However, if all three can cooperate all through the process, then it's a very effective surface analysis instrument. Inge ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________