カソード・エミッター

Kimball Physics社製「カソード・エミッター」

LaB6(六ホウ化ランタン)、Ta(タンタル)、BaO(酸化バリウム)、Y2O3(酸化イットリウム)、W(タングステン)など様々な材質・形状のカソードを用意しております。電子銃用カソードだけでなく、SEM・TEM用エミッターとしても多くの大手メーカー装置にOEMで組み込まれている信頼と実績のある製品です。

仕 様

Description Model # (style) Size
LaB6 Single crystal with various microflat diameters
High current, high brightness, single crystal
Emission current densities up to 30 A/cm2
Range of emission surface sizes
Long lifetimes
Operating pressure < 10-7 torr
Custom sizes available
AEI base, compact CB-104 or request custom mounting

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ES-423E Style 90-XX Crystal with 90° cone,
microflat size depends on column design:
< 100 μm dia
ES-423 Style 90-XXX Crystal with 90° cone,
microflat size depends on column design:
100 μm to 280 μm dia
ES-423E Style 90-300 Crystal with 90° cone,
300 μm dia
ES-423E Style 180-330 Flat crystal, 330 μm dia,
extends above ferrule
LaB6 Single crystal in guard ring
Small diameters with microflats
Brightness > 106 A/cm2/sr
Operating pressure < 10-7 torr
Small spot, long lifetime
Emission current densities up to 30 A/cm2
Available on many bases

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ES-423E – GR Style 90-XXX Crystal with 90° cone,
< guard ring surrounds cone.
Microflat range 5 μm to 250 μm
LaB6 High current, large diameter
Large diameters, high cathode loading
30 A/cm2, 10-7 torr, long lifetime
Emission currents up to 0.5 A
AEI base or custom mounting

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ES-440 Flat crystal, 1.78 mm dia
Tantalum (Ta) Disc
General purpose planar disc cathode
0.05 – 1.0 A/cm2, 10-5 torr
Emission up to tens of mAs
Two larger disc sizes for higher currents

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ES-042 0.033″ dia disc
ES-044 0.048″ dia disc
ES-046 0.062″ dia disc moly pins
Barium Oxide (BaO) Disc
Low light, low temperature
0.25 A/cm2, 10-7 torr
Emission up to 3 mA
Two larger disc sizes for higher currents

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ES-015 0.033″ disc dia
ES-064 0.048″ dia disc
ES-066 0.062″ dia disc moly pins
Yttria Coated (Y2O3) Disc
Chemically resistant for poorer vacuum
10-4 torr for Ir heater, low work function 10-5 torr for W heater
Disc – 2.5 A/cm2, emission up to 10 mA
Three larger disc sizes for higher currents

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ES-535 0.033″ dia disc
ES-535W 0.033″ dia disc
ES-526 0.048″ dia disc
ES-529 0.062″ dia disc moly pins

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