Bremsstrahlung enhancement in electron probe microanalysis for homogeneous samples using Monte Carlo simulation.

Area of Science:

• Materials Science
• Analytical Chemistry
• Physics

Background:

• Quantitative analysis in electron microscopy is affected by fluorescence enhancement.
• Current models often assume bremsstrahlung fluorescence is negligible compared to characteristic fluorescence.
• This assumption lacks definitive supporting arguments.

Purpose of the Study:

• To investigate and quantify bremsstrahlung fluorescence enhancement in electron probe microanalysis.
• To compare the significance of bremsstrahlung fluorescence correction with characteristic fluorescence correction.
• To evaluate the efficiency of Monte Carlo simulation with interaction forcing for these calculations.

Main Methods:

• Utilized Monte Carlo simulation with the penelope 2008 code.
• Employed the interaction forcing routine for variance reduction.
• Studied bremsstrahlung fluorescence enhancement in electron probe microanalysis.

Main Results:

• Bremsstrahlung and characteristic fluorescence corrections were found to be comparable in the studied cases.
• The interaction forcing approach proved to be an efficient method for calculating continuum enhancement.
• This method was also effective for assessing characteristic fluorescence correction.

Conclusions:

• The assumption that bremsstrahlung fluorescence correction is negligible is not universally valid.
• Monte Carlo simulation with interaction forcing is a powerful and efficient tool for studying fluorescence enhancement.
• Accurate quantitative analysis necessitates considering both bremsstrahlung and characteristic fluorescence effects.