Cathodes & Filaments for Electron Microscopes Cathodes, LaB6


Kimball Physics Lanthanum Hexaboride (LaB6) Filaments/Cathodes (continued)


The cathode must be accurately and correctly positioned behind the Wehnelt aperture.


There must be controllable bias resistors which can reach adequately high values; some instruments are limited by values which are to low.


Ordering Information


For most SEMs and TEMs, the standard Styles 90-15 (90° included angle with a 15*m flat) is recommended.


Style 90-15 (90° included angle with a 15*m flat) is recommended for Leica/Cambridge.


Style 90-06 (90° included angle with a 6*m flat) is for high resolution, and selective TEMs. This cathode provides higher brightness, but with some compromise in lifetime.


To order:


Specify Model: Model ES-423E & Style i.e. Style 90-15 : Standard Microflat Style 90-20 : Standard for Leica, Cambridge


Style 90-20 : 90° Angle w/non-standard microflat


Style 60-06 : 60° Angle w/non-standard microflat


Specify Instrument Manufacturer and Model No. Specify Type of Instrument: SEM, TEM, STEM. Cat. #


Description


81080-15 81080-20


81080-90 81080-60


Example


Model ES-423E, Style 90-15 Standard for JEOL 820 TEM Cat. # 81080-15


1. Standard (90-15)


2. Standard for Leica, Cambridge


3. Non-Standard (90-20)


4. Non-Standard Selective (60-06)


Qty.


each each


each each


Fax (215) 412-8450 or 8452 • email : info@emsdiasum.com or stacie@ems-secure.com • www.emsdiasum.com Electron Microscopy Sciences In PA: (215) 412-8400 • Toll-Free (800) 523-5874


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