Mass Spectrometer #3
by Science Photo Library
Title
Mass Spectrometer #3
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Mass spectrometer. Time-of-flight secondary ion mass spectrometer (ToF SIMS). The sample tray is seen through a porthole at lower centre. This mass spectrometer analyses the surface of a sample. A pulsed ion beam removes molecules from the outermost surface of the sample and converts them to ions. This is done at low intensity so that large or macro molecules, such as polymers, stay intact. The ions are taken up into a flight tube and accelerated toward a detector. The time taken to reach the detector determines the mass of the ion. This mass spectrometer helps to accurately determine the chemical composition of a sample's surface.
Uploaded
May 10th, 2013
Embed
Share
Similar Subjects
Similar Images
Comments (2)
Recently Viewed
