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Home / Accessories for Microscopy / Filaments / Kimball LaB6 Cathodes

Kimball LaB6 Cathodes

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Kimball LaB6 Cathodes

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Kimball Lanthanum Hexaboride (LaB6) Cathodes.

for Electron Microscopes

The Kimball Physics ES-423E (Extended Life) Lanthanum Hexaboride Cathode is a high performance, resistively heated, thermionic electron source. It is currently used in many electron optical systems: SEM’s, TEM’s, microprobes, electron lithography systems, etc.

This superior LaB6 source gives a greater brightness (higher current density), lower energy spread (better resolution) and a longer lifetime than standard tungsten filaments.

Lifetimes in excess of 6 months of continuous operation are regularly achieved in commercial SEM’s and TEM’s with suitable gun vacuum (10-7 torr or better).

The standard emitter is a 15µm diameter <100> oriented single crystal surface mounted on the end of a single piece, stress-free, carbon heater rod, held in place by a carbon ferrule.

The single piece carbon heater rod has a precision machined 100µm slot along the axis to direct the heating current; the result is no high temperature carrying high temperature joints.

The design together with a high degree of symmetry keeps mechanical movements small which results in increased stability.

The small physical size fits most Wehnelt cylinders with ease. Another advantage of the Kimball Physics LaB6 cathode is the reduced material loss which means less Wehnelt contamination; again this results in greater stability compared to other types of LaB6 cathodes.

Heating current path through precision-machined, single-piece carbon rod and mounting strips; sub-base provides rigidity and easier mounting

For use in:

  • Scanning Electron Microscopes
  • Transmission Electron Microscopes
  • Electron Micro Probe Analyzers
  • Electron Lithography Systems
  • Electron Accelerators


Features

  • Extended lifetime
  • Thousands of hours in clean vacuum
  • Guaranteed life (measured in surface loss)
  • Guaranteed against mounting structure failure


Designed with built-in stability

  • Thermal / chemical / mechanical / electrical stability
  • Precision machined carbon mounting
  • High over-temperature tolerance


High brightness/low energy spread

  • Oriented single-crystal
  • Best quality/high purity material
  • Low work function
  • Improved resolution


Accurate microflats

  • Superior optics/controlled source size
  • Standard diameters available
User Information
General Guidelines
Cathode Life vs Gun Vacuum
Emission Drif
Oxygen Activation of LaB6 Cathodes
Cathode Style 60-06
LaB6 Cathode Operating Instructions
Recovery of Emission after a Vacuum Dump
LaB6 Thermodynamics
LaB6 Surface Recession vs Temperature
LaB6 Surface Recession vs Theoretical Brightness
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Product
Description
Order
Product

ES423E-90/15 standard LaB6 tip with 90 cone and 15 m microflat
Kimball ES423E-90/15 standard LaB6 tip with 90 cone and 15 m microflat; perfect for SEM/TEM applications
no. 1440-110 to 1440-136

Description

 

Dimensions for EM Filament Bases (for Tungsten/Lab6) Filaments

Base Type Diameter of Ceramic disc
in mm
Diameter of Pins
in mm
Center Distance of Pins
in mm
AEI 12.0 1.0 6.45
FEI/PHILIPS 26.0 1.0 5.0
JEOL K-type 28.0 1.2 8.0
HITACHI S-type 9.8 1.2 2.7
ZEISS (DSM & TEM)
LEO (1450 & TEM)
TESCAN
19.8 1.0 5.0
AMRAY (except 1200) 26.1 1.0 5.0
ISI/ABT/TOPCON
2 pins
23.3 1.2 11.9
ISI/ABT/TOPCON 23.4 1.2 12.0

Order

Art.Description Unit PriceQuantity
1440-110

LaB6 Cathode, C423E-90/15, with AEI base for Cambridge Instruments/Leica/LEO/ZEISS EVO, Cameca, CamScan and Electroscan

Each € 1.290,70
✓
spinner
1440-112

LaB6 Cathode, A423E-90/15, for Amray

Each € 1.384,40
✓
spinner
1440-114

LaB6 Cathode, P423E-90/15, for FEI/Philips except smaller AEI style on XL30 SEM

Each € 1.384,40
✓
spinner
1440-116

LaB6 Cathode, Z423E-90/15, for ZEISS/LEO TEMs, ZEISS DSM SEMs, or Tescan SEMs

Each € 1.355,60
✓
spinner
1440-118

LaB6 Cathode, HL423E-90/15, for Hitachi HU base

Each € 1.398,90
✓
spinner
1440-119

LaB6 Cathode, H423E-90/15, for Hitachi S base

Each € 1.398,90
✓
spinner
1440-122

LaB6 Cathode, J423E-90/15, for JEOL K base

Each € 1.384,40
✓
spinner
1440-126

LaB6 Cathode, I423E-90/15, for ISI/ABT/Topcon 2 pin

Each € 1.384,40
✓
spinner
1440-130

LaB6 Cathode, E423E-90/15, for ETEC/Perkin Elmer

Each € 1.384,40
✓
spinner
1440-134

LaB6 Cathode, S423E-90/15, for Siemens base

Each € 1.384,40
✓
spinner
1440-136

LaB6 Cathode, G423E-90/15, for VG

Each € 1.384,40
✓
spinner
Brand: Ted Pella

Product
Description
Order
Product

ES423E-90/20 long life time, high stability tip with 90 cone and 20 m microflat
Kimball ES423E-90/20 long life time, high stability tip with 90 cone and 20 m microflat; mainly for analytical SEM/micro probe applications
no. 1440-210 to 1440-236

Description

 

Dimensions for EM Filament Bases (for Tungsten/Lab6) Filaments

Base Type Diameter of Ceramic disc
in mm
Diameter of Pins
in mm
Center Distance of Pins
in mm
AEI 12.0 1.0 6.45
FEI/PHILIPS 26.0 1.0 5.0
JEOL K-type 28.0 1.2 8.0
HITACHI S-type 9.8 1.2 2.7
ZEISS (DSM & TEM)
LEO (1450 & TEM)
TESCAN
19.8 1.0 5.0
AMRAY (except 1200) 26.1 1.0 5.0
ISI/ABT/TOPCON
2 pins
23.3 1.2 11.9
ISI/ABT/TOPCON 23.4 1.2 12.0

Order

Art.Description Unit PriceQuantity
1440-210

LaB6 Cathode, C423E-90/20, with AEI base for Cambridge Instruments/Leica/LEO/ZEISS EVO, Cameca, CamScan and Electroscan

Each € 1.357,10
✓
spinner
1440-212

LaB6 Cathode, A423E-90/20, for Amray

Each € 1.384,40
✓
spinner
1440-214

LaB6 Cathode, P423E-90/20, for FEI/Philips except smaller AEI style on XL30 SEM

Each € 1.384,40
✓
spinner
1440-216

LaB6 Cathode, Z423E-90/20, for ZEISS DSM SEMs or Tescan SEMs

Each € 1.355,60
✓
spinner
1440-219

LaB6 Cathode, H423E-90/20, for Hitachi S base

Each € 1.398,90
✓
spinner
1440-222

LaB6 Cathode, J423E-90/20, for JEOL K base

Each € 1.384,40
✓
spinner
1440-226

LaB6 Cathode, I423E-90/20, for ISI/ABT/Topcon 2 pin

Each € 1.290,80
✓
spinner
1440-230

LaB6 Cathode, E423E-90/20, for ETEC/Perkin Elmer

Each € 1.384,40
✓
spinner
1440-234

LaB6 Cathode, S423E-90/20, for Siemens base

Each € 1.384,40
✓
spinner
1440-236

LaB6 Cathode, G423E-90/20, for VG

Each € 1.384,40
✓
spinner
Brand: Ted Pella

Product
Description
Order
Product

ES423E-60/6 high resolution/high brightness tip with 60 cone and 6 m microflat
Kimball ES423E-60/6 high resolution/high brightness tip with 60 cone and 6 m microflat; for use in TEMs (rarely used for SEMs)
no. 1440-310 to 1440-336

Description

 

Dimensions for EM Filament Bases (for Tungsten/Lab6) Filaments

Base Type Diameter of Ceramic disc
in mm
Diameter of Pins
in mm
Center Distance of Pins
in mm
AEI 12.0 1.0 6.45
FEI/PHILIPS 26.0 1.0 5.0
JEOL K-type 28.0 1.2 8.0
HITACHI S-type 9.8 1.2 2.7
ZEISS (DSM & TEM)
LEO (1450 & TEM)
TESCAN
19.8 1.0 5.0
AMRAY (except 1200) 26.1 1.0 5.0
ISI/ABT/TOPCON
2 pins
23.3 1.2 11.9
ISI/ABT/TOPCON 23.4 1.2 12.0

Order

Art.Description Unit PriceQuantity
1440-310

LaB6 Cathode, C423E-60/6, with AEI base

Each € 1.384,40
✓
spinner
1440-314

LaB6 Cathode, P423E-60/6, for FEI/Philips (except smaller AEI style on XL30 SEM)

Each € 1.384,40
✓
spinner
1440-316

LaB6 Cathode, Z423E-60/6, for ZEISS/LEO TEMs or Tescan SEMs

Each € 1.384,40
✓
spinner
1440-318

LaB6 Cathode, HL423E-60/6, for Hitachi HU base

Each € 1.384,40
✓
spinner
1440-319

LaB6 Cathode, H423E-60/6, for Hitachi S base

Each € 1.398,90
✓
spinner
1440-322

LaB6 Cathode, J423E-60/6, for JEOL K base

Each € 1.384,40
✓
spinner
1440-326

LaB6 Cathode, I423E-60/6, for ISI/ABT/Topcon 2 pin

Each € 1.384,40
✓
spinner
1440-336

LaB6 Cathode, G423E-60/6, for VG

Each € 1.384,40
✓
spinner
Brand: Ted Pella

Contact

Van Loenen Instruments
Penningweg 69 E
1507 DE Zaandam

Tel :+31 75 614 90 40
E-mail  :info@loeneninstruments.com

BTW/VAT nr. :NL804 608 180 B01
KvK nr. :28038099

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