Topic: sem-filament

Tungsten vs. CeB6 electron source: Choosing the right desktop SEM

By Wouter - Sep 13, 2018

Considering a desktop scanning electron microscope (SEM)? If so, then it is important to determine what type of electron source fits your needs, since it has a direct effect on the quality of your output. In this blog, we'll therefore describe compare a Tungsten electron source with a CeB6 electron source. Read on to learn to discover which electron source is most suitable for a desktop SEM.

Considering a desktop scanning electron microscope (SEM)? If so, then it is important to determine what type of electron source fits your needs, since it has a direct effect on the quality of your output. In this blog, we'll therefore describe compare a Tungsten electron source with a CeB6 electron source. Read on to learn to discover which electron source is most suitable for a desktop SEM.

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Emission stability in SEM thermionic electron sources: CeB6, LaB6 and W filaments

By Marijke Scotuzzi - Feb 1, 2018

Typically, desktop scanning electron microscopes (SEM) make use of thermionic sources, from which electrons are emitted when warming up the SEM filament. Although the working principles are the same, different thermionic sources show a different performance. Phenom SEMs are equipped with a CeB6 source because of its higher brightness and longer lifetime. A parameter that plays a crucial role is the emission current stability. How is the CeB6 source performing in terms of stability? What are the engineering smarts that enable the Phenom source to maximize a CeB6 source's potential? This blog answers these questions.

Typically, desktop scanning electron microscopes (SEM) make use of thermionic sources, from which electrons are emitted when warming up the SEM filament. Although the working principles are the same, different thermionic sources show a different performance. Phenom SEMs are equipped with a CeB6 source because of its higher brightness and longer lifetime. A parameter that plays a crucial role is the emission current stability. How is the CeB6 source performing in terms of stability? What are the engineering smarts that enable the Phenom source to maximize a CeB6 source's potential? This blog answers these questions.

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Desktop SEM electron sources: why CeB6 is the right choice

By Karl Kersten - Aug 3, 2017

If you’re looking for a scanning electron microscope (SEM), you probably know by now that the electron source is one of the most important parts of the system. In a previous blog, we talked about the properties of three different electron sources: the Tungsten, CeB6 and FEG sourcesIn this blog, we’ll take a closer look at Tungsten and CeB6 electron sources.

If you’re looking for a scanning electron microscope (SEM), you probably know by now that the electron source is one of the most important parts of the system. In a previous blog, we talked about the properties of three different electron sources: the Tungsten, CeB6 and FEG sourcesIn this blog, we’ll take a closer look at Tungsten and CeB6 electron sources.

Read more

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