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真空関連機器

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】
Emitter Type 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
ES-423E
Style 90-XX
Crystal with 90° cone,
microflat size depends
on column design:
< 100 μm dia
ES-423E
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
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
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
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
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, low work function
Disc - 2.5 A/cm2, emission up to 10 mA
Three larger disc sizes for higher currents
ES-525 0.033" dia disc
ES-526 0.048" dia disc
ES-529 0.062" dia disc
moly pins
Tungsten (W)
Filament

General purpose / microscopy
0.05 - 1.0 A/cm2
Emission from tip up to 50 μA
Glass, AEI, or various microscope bases below
ES-020 (10)
Box of 10
Hairpin filament
AEI glass base

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