Kimball Lanthanum Hexaboride Single Crystal Cathodes 六硼化鑭單晶陰極

Kimball Lanthanum Hexaboride Single Crystal Cathodes 六硼化鑭單晶陰極

 

Description

The Kimball Physics ES-423E (Extended Life) Lanthanum Hexaboride (LaB6) Cathode is a high performance, resistively heated, thermionic electron source. It is currently employed in many brightness-limited electron optical systems: SEM’s, TEM’s, probes, electron lithography systems, and more. It is based on a well-proven heater structure, which has recently been further refined with features that include improved reliability of the heater circuit, improved stability of the LaB6?crystal, and less exposure of LaB6?to reduce Wehnelt aperture contamination. Lifetimes in excess of 6 months of continuous operation are regularly achieved in commercial SEM’s and TEM’s with suitable gun vacuum. Continuous operation at the full operating temperature improves the thermal stability of the gun and hence beam current stability.

Kimball Physics ES-423E（長壽命）六硼化鑭（LaB6）陰極是一種高性能、電阻加熱的熱離子電子源。目前，它被用于許多亮度受限的電子光學系統：SEM、TEM、探針、電子光刻系統等。它基于一種經過充分驗證的加熱器結構，該結構最近被進一步改進，其特征包括提高加熱器電路的可靠性、提高LaB6晶體的穩定性以及減少LaB6的暴露以減少Wehnelt孔徑污染。在具有合適的槍真空的商業SEM和TEM中，連續操作的壽命通常超過6個月。在全操作溫度下的連續操作提高了槍的熱穩定性，從而提高了射束電流的穩定性。

Applications

  • Scanning Electron Microscopes
  • Transmission Electron Microscopes
  • Electron Lithography Systems
  • Electron Accelerators
  • X-ray Sources
  • Free Electron Lasers
  • Custom Applications

應用

掃描電子顯微鏡

透射電子顯微鏡

電子光刻系統

電子加速器

X射線源

自由電子激光器

自定義應用程序

Features / Options:

  • Extended Lifetime
    • Thousands of functional hours in
      clean vacuum
    • Guaranteed Against Structural
      Mounting Failure
  • Exceptional Stability
    • Precision machined carbon mounting
    • High over-temperature tolerance
  • High Brightness / Low Energy Spread
    • <100> Oriented Single Crystal
    • Best Quality / High Purity Material
    • Emission current densities up to 30 A/cm2
    • Operating pressure < 10-7?torr
  • Accurate Microflats
    • Superior Optics
    • Controlled Source Size
    • Standard Diameters Available
    • Range of emission surface sizes
    • Custom sizes available
  • On AEI base, compact CB-104 base or request custom mounting

功能/選項：

延長使用壽命

在清潔真空中可以工作數千個工作小時

保證不會出現結構安裝故障

卓越的穩定性

精密加工碳支座

高溫耐受性

高亮度/低能量擴散

<100>定向單晶

最佳質量/高純度材料

發射電流密度高達30 A/cm2

工作壓力<10-7托

精確的微平臺

卓越的光學性能

受控源大小

提供標準直徑

發射表面尺寸范圍

提供定制尺寸

在AEI底座上，緊湊型CB-104底座或要求定制安裝

 

 


Related posts