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います。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 |
 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-XXX | Crystal with 90° cone, microflat size depends on column design: < 330 μm dia | |
| ES-423E Style 180-330 | Flat crystal, 330 μm dia, extends above ferrule | |
 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 | Crystal with 60° or 90° cone, guard ring surrounds cone. Microflat range 10 μm to 250 μm (standard diameter of 25 μm) |
 General purpose planar disc cathode Area source 0.005 – 0.02cm2, 10-5 torr Emission up to 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 | |
 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 | |
 Chemically resistant for poorer vacuum 10-4 torr for Ir heater, low work function 10-5 torr for W heater Current densities up to 0.5 A/cm2, emission up to 10 mA Three larger disc sizes for higher currents | ES-535 | 0.033″ dia disc |
| ES-535W | 0.033″ dia disc | |
| ES-526 | 0.048″ dia disc | |
| ES-529 | 0.062″ dia disc |