Laboratory for ChemoMetrics, Vienna (Austria) MS - Chemometrics - COSIMA

Summary of Results: Software Simulation of TOF-SIMS

Example: Primary Ion Distribution

Introduction	Method	Software SimTof
K and C3H3	Primary Ion Distribution	Reflector Potential

Aim of the example

Influence of different temporal intensity distributions of the primary ion pulses on the signals for the ions K⁺ (mass 38.964) and C₃H₃⁺ (mass 39.024).

Input

For details see Method and example 1.

Number of secondary ions: 10000

TOF geometry: with ion reflector (similar to the COSIMA instrument)

Result

primary ion pulse	signal
	mass resolution ca 30000
	mass resolution 3800
	mass resolution 1200

The pulse width of the primary ions heavily influences the mass resolution.

Introduction	Method	Software SimTof
K and C3H3	Primary Ion Distribution	Reflector Potential

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Last update 2000-12-03