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氟化钡 (BaF2) 窗口片

氟化钡 (BaF2) 窗口片

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由于TECHSPEC®氟化钡 (BaF2) 窗口片具有宽广的带宽透射率，可从远紫外透射到长波红外，因此本产品能够用于各种应用，如红外分光镜。氟化钡的低折射率为1.48，可在无需增透膜的情况下提供高透射率。在干燥环境下，氟化钡窗口片可忍受高达800°的环境温度，但长时间与水分接触将会降低真空紫外光范围中的透射率。然而，相比氟化钙窗口片，氟化钡窗口片对水分的抵抗力较低，BaF2窗口片是最能抵抗高能辐射的光学氟化物，但却拥有较低的UV透射。BaF2的努氏硬度为82。


  • 介于200nm - 12μm之间的绝佳透射率

  • 可抵抗高能辐射

  • 无镀膜版可提供高透射率


                              产品

标题产品编码色散系数 (vd)轴方向倒角CA (%)CA (mm)Dia. (mm)厚度 (mm)涂层涂层规格热膨胀系数 CTE (10-6/°C)
5mm直径 x 1mm 厚度，氟化钡窗片87-69981.78 
Protective as needed 90.00 4.50 5.00 +0.0/-0.11.00 ±0.1Uncoated 
18.1 
12.5mm直径 x 2mm 厚度，氟化钡窗片87-70081.78 
Protective as needed 90.00 11.25 12.50 +0.0/-0.12.00 ±0.1Uncoated 
18.1 
25mm直径 x 3mm 厚度，氟化钡窗片87-70181.78 
Protective as needed 90.00 22.50 25.00 +0.0/-0.13.00 ±0.1Uncoated 
18.1 
25mm直径 x 3mm 厚度，氟化钡窗片18-36281.78 
Protective as needed 90.00 22.86 25.40 +0.0/-0.13.00 ±0.1Uncoated 
18.1 
50mm直径 x 3mm厚度，氟化钡窗片87-70281.78 
Protective as needed 90.00 45.00 50.00 +0.0/-0.13.00 ±0.1Uncoated 
18.1 
50mm直径 x 3mm厚度，氟化钡窗片18-36381.78 
Protective as needed 90.00 45.72 50.80 +0.0/-0.13.00 ±0.1Uncoated 
18.1 
5mm Dia. x 1mm Thick, BBAR (2000-5000nm) Coated Barium Fluoride Window23-52681.78 Random Protective as needed 90.00 4.50 5.00 +0.0/-0.11.00 ±0.1BBAR (2000-5000nm) Ravg <1.5% @ 2000-5000nm Rabs <3.0% @ 2000-5000nm Ravg <1.75% @ 2000-4000nm 18.1 
12.5mm Dia. x 2mm Thick, BBAR (2000-5000nm) Coated Barium Fluoride Window23-52781.78 Random Protective as needed 90.00 11.25 12.50 +0.0/-0.12.00 ±0.1BBAR (2000-5000nm) Ravg <1.5% @ 2000-5000nm Rabs <3.0% @ 2000-5000nm Ravg <1.75% @ 2000-4000nm 18.1 
12.7mm Dia. x 2mm Thick, BBAR (2000-5000nm) Coated Barium Fluoride Window23-52881.78 Random Protective as needed 85 10.80 12.70 +0.0/-0.132.00 ±0.13BBAR (2000-5000nm) Ravg <1.5% @ 2000-5000nm Rabs <3.0% @ 2000-5000nm Ravg <1.75% @ 2000-4000nm 18.1 
25mm Dia. x 3mm Thick, BBAR (2000-5000nm) Coated Barium Fluoride Window23-52981.78 Random Protective as needed 90.00 22.50 25.00 +0.0/-0.13.00 ±0.1BBAR (2000-5000nm) Ravg <1.5% @ 2000-5000nm Rabs <3.0% @ 2000-5000nm Ravg <1.75% @ 2000-4000nm 18.1 
25.4mm Dia. x 3mm Thick, BBAR (2000-5000nm) Coated Barium Fluoride Window23-53081.78 Random Protective as needed 90.00 22.86 25.40 +0.0/-0.13.00 ±0.1BBAR (2000-5000nm) Ravg <1.5% @ 2000-5000nm Rabs <3.0% @ 2000-5000nm Ravg <1.75% @ 2000-4000nm 18.1 
50mm Dia. x 3mm Thick, BBAR (2000-5000nm) Coated Barium Fluoride Window23-53181.78 Random Protective as needed 90.00 45.00 50.00 +0.0/-0.13.00 ±0.1BBAR (2000-5000nm) Ravg <1.5% @ 2000-5000nm Rabs <3.0% @ 2000-5000nm Ravg <1.75% @ 2000-4000nm 18.1 
50.8mm Dia. x 3mm Thick, BBAR (2000-5000nm) Coated Barium Fluoride Window23-53281.78 Random Protective as needed 90.00 45.72 50.80 +0.0/-0.13.00 ±0.1BBAR (2000-5000nm) Ravg <1.5% @ 2000-5000nm Rabs <3.0% @ 2000-5000nm Ravg <1.75% @ 2000-4000nm 18.1 


产品概览

氟化钡是一种快闪烁体，可用来检测X射线、伽玛射线或其他高能颗粒，如正电子发射计算机断层显像 (PET) 中的511 keV伽玛光子。BaF2也可用来检测高能中子，或通过使用脉冲形状甄别技术从同时出现的伽玛光子中隔开它们。


                               技术数据