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IR grade polished barium fluoride (BaF2) 60 ° dispersive prism 0.15-12um 25.4 x 25.4 x 25.4mm
IR grade polished barium fluoride (BaF2) 60 ° dispersive prism 0.15-12um 25.4 x 25.4 x 25.4mm
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A80161231
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Main parameter
透射波段范围:0.15~12μm(注意:IR级可能在UV下的性能受限)
折射率 1.45(5μm)(1)
反射损耗:6.5% at 5%(2个表面)
吸收系数: 3.2×10-4cm-1 @6μm
吸收峰: 47μm
dn / dT:-15.2×10-6 /℃(2)
dn /dμ= 0:1.95μm
密度:4.89g / cc
熔点: 1386℃
导热率:    11.72W m-1 K-1 @ 286K
热膨胀: 18.1×10-6 /℃@273K
硬度:Knoop 82 with 500g indenter(4)
比热容量:410JKg-1K-1(3)
介电常数:7.33 at 1MHz 
杨氏模量(E)53.07GPa(3)
剪切模量(G)25.4GPa(3)
体积模量(K)56.4GPa
弹性系数:  C11 = 89.2 C12 = 40.0  C44 = 25.4(2)
表观弹性极限:26.9MPa(300psi)(4)
泊松比:  0.343
溶解性:0.17g / 100g water,23℃
分子量:175.36
类型/结构立方CaF2,Fm3m,(111)裂解

(1) Handbook Optical Constants, ed Palik, V3, ISBN 0-12-544423-0
(2) I.H.Malitson; J.Opt.Soc.Am. Vol52, p1377, 1962
(3) D.Girlich; Elastic Constants of BaF2; Phys.Rev. Vol135, p1826, 1964
(4) S.Ballard et al; J.Opt.Soc.Am. Vol42, p684, 1952
(5) US patent. Chemical polish. 4,040,896 1977
(6) M.Laval et al; Nu. Insts.Meth, V206 p169, 1983

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