無鈹 ( Beryllium ) X 射線視窗

Amptek 宣佈推出碳化硼 （B4C） 用於 Amptek 的 FAST SDD® 和 SiPIN 探測器的視窗。該產品是多年努力的結果，旨在為最終使用者和 OEM 製造商提供標準鈹 （Be） 箔的高性能視窗替代品。 

產品優勢

• 在廣泛的能量範圍內，傳送效率與 Be 箔相當，典型用於手持式和桌上型 XRF 應用。
  • 從鈹視窗切換到 B4C 視窗時，儀器的結果不會受到太大影響。
  • 可用於以前使用過鈹視窗的大多數應用。   
• 所]使用是無毒材料讓您在安裝和使用過程中無後顧之憂。
  • 對鈹的潛在健康危害和接觸鈹的擔憂對這些視窗來說不是問題。
• 與典型的鈹箔相比，厚度變化更小。
  • 鈹視窗成型製程允許視窗厚度有有一定程度的變化。 然，B4C 視窗的半導體製造過程受到嚴格控制，因此視窗厚度更加一致。
  • 原始設備製造商更喜歡這種方式，因為即使在較低的能量下，他們也能期望探測器與探測器之間有相同的傳送效率。
  • 如果視窗厚度更接近標示值，則可在定量計算中更好地建模。

產品應用

B₄C 視窗的穿透率可與標準的 ⅓ mil ( 密耳 ) 和 ½ mil  ( 密耳 )的Be 視窗媲美。 最初發布的產品採用厚度為 3.5 µm 的均勻B4C 層，自支撐，無需底層網格。 鋁質外塗層提供接地表面，幫助探測器屏蔽電磁干擾。

一致的厚度

Amptek is announcing the introduction of Boron Carbide (B4C) windows for use with Amptek’s FAST SDD® and SiPIN detectors. The product offering is the result of a multi-year effort to provide end-users and OEM manufacturers with a high-performance window alternative to standard beryllium (Be) foils. 
 

Advantages

• Comparable transmission efficiency to Be foils over a wide energy range, typical to hand-held and benchtop XRF applications
  • Results from an instrument will not be greatly affected when switching from Beryllium to B4C windows.
  • Can be used in most places where a beryllium window was previously used. 
• Non-toxic material provides worry-free handling during installation and use
  • Concerns over the potential health hazards of beryllium and exposure are not an issue with these windows. 
• Less thickness variation as compared to typical Be foils
  • The beryllium window forming process allows a fair amount of variation in window thickness.  The tightly controlled semiconductor fabrication process on the B4C windows produces a much more consistent window thickness.  
  • OEM's prefer this as they can expect similar transmission from detector to detector, even at lower energies.  
  • Allows for better modeling in quantitative calculations if the window thickness more closely matches the nominal values.
     

Applications

B₄C windows have been designed to provide transmissions comparable to standard ⅓ mil and ½ mil Be windows.  The initial product release utilizes a uniform 3.5 µm thick B4C layer, self-supported, without the need for an underlying grid.  An aluminum outer coating provides a grounded surface to help shield the detector from EMI. 

Consistent Thickness ​