LaB6 Cathodes – Denka

Standard Denka Model 3 LaB6 Cathodes

Lanthanum Hexaboride is the optimum cathode material for use in:

Low potential barrier (work function)
High melting point and stability at high temperatures
Low vapor pressure – reduces evaporation lost
Chemical stability
High brightness: LaB6 beam is ten times brighter than tungsten, has superior resolution – wide range of acceleration voltages. It provides sharp and clear pictures even to the smallest details. The initial brightness of a Denka Model 3 cathode (1 x 106 A/cm2.Str) is substantially better than that of competing mini-vogel type cathodes (typically 5x105 A/cm2.Str)
Long life: Heat and vacuum are the final determinants of any cathode tip’s life, but at 1550°C and a vacuum of 10-7 Torr, a service life of about 500 hours can be achieved.
Stability: Every Denka Model 3 cathode offers a stability of better than 3% per hour at 1550°C
Interchangeability: Denka Model3 LaB6 cathodes are designed as direct replacement for tungsten filaments.

AMRAY	Phillips Instruments	Hitachi	JEOL
ISI SEMs	ISI TEMs	Cambridge

All standard Denka M-3 LaB6 Cathodes are provided with a 90° cone angle and a 15µm radius round tip.

80900	Denka M-3 LaB6 Standard for JEOL	each	790.00
80902	Denka M-3 LaB6 Standard for Philips	each	750.00
80904	Denka M-3 LaB6 Standard for AMRAY	each	750.00
80906	Denka M-3 LaB6 Standard for Cambridge	each	760.00
80908	Denka M-3 LaB6 Standard for Hitachi	each	760.00
80910	Denka M-3 LaB6 Standard for ISI SEM	each	760.00
80912	Denka M-3 LaB6 Standard for ISI TEM	each	760.00

NOTE: These are just the standard Denka LaB6 Cathodes that are in stock. All other Denka cathodes are available upon request