Search results
29 sie 2023 · Examine the diagram of a reflectron TOF mass analyzer. A. Lowest mass ion arrives first and highest mass ion arrives last. (red, blue, black, then yellow) A. To measure flight times a set of ions must enter the mass analyzer and be accelerated all at the same time.
29 sie 2023 · Time of flight mass analyzer principle. The principle of a Time-of-flight mass analyzer relies on the simple idea that ions with varying mass-to-charge ratios and the same kinetic energy move at different speeds in an electric field, which will determine the composition or structure of substances.
The intention of this tutorial is to introduce into the basic concepts of time-of-flight mass spectrometry, beginning with the most simple single-stage ion source with linear field-free drift region and continuing with two-stage ion sources combined with field-free drift regions and ion reflectors—the so-called reflectrons.
The time of flight is proportional to the square root of the mass of the ions, showing that the lighter the ion the faster it will pass through and the quicker it will hit the detector. The heavier the ion, the slower it will travel and the longer it will take to hit the detector.
Introduction. Q-TOF-MS is an analytical technique that advantageously combines the benefits of two different mass analysers. Utilising the high compound fragmentation efficiency of quadrupole technology in combination with the rapid analysis speed and high mass resolution capability of time-of-flight, a unique ‘hybrid’ analyser was introduced. 1 Originally developed in the early 1980s, the ...
Muon Speed Using Time of Flight (1) Using the TOF analysis module, one can measure the average time muons take to travel between two counters. Then, we can calculate average speed (v = d/t). We use the following definitions (same as Flux): muon time of arrival at a scintillation counter = hit. scintillation counter = channel.
Time of flight ( ToF) is the measurement of the time taken by an object, particle or wave (be it acoustic, electromagnetic, etc.) to travel a distance through a medium. This information can then be used to measure velocity or path length, or as a way to learn about the particle or medium's properties (such as composition or flow rate).
