BaF4 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.605617 n_e = 1.608892	V_d = 43.91 V_e = 43.62	n_F - n_C = 0.013789 n_F' - n_C' = 0.013958	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.525858 C2 = -0.010870078 C3 = 0.016542807 C4 = 0.0011569891 C5 = -0.000088562388 C6 = 0.0000061033724

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.591159
n _s	1.594595
n _r	1.599250
n _C	1.601528
n _C'	1.602171
n _0.6328	1.602775
n _D	1.605496
n _d	1.605617
n _e	1.608892
n _F	1.615318
n _F'	1.616130
n _g	1.623180
n _h	1.629899
n _i	1.641850
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7518
P_C,A'	0.3281
P_d,C	0.2965
P_e,C	0.5340
P_g,d	1.2735
P_g,F	0.5701
P_h,g	0.4872
P_i,g	1.3538
P_C',t	0.7985
P_e,C'	0.4873
P_F',e	0.5248
P_i,F'	1.8650

transmittance: 10 mm
τ_0.33	0.04
τ_0.34	0.145
τ_0.35	0.505
τ_0.36	0.768
τ_0.37	0.887
τ_0.38	0.943
τ_0.39	0.967
τ_0.4	0.978
τ_0.42	0.985
τ_0.44	0.988
τ_0.46	0.988
τ_0.48	0.99
τ_0.5	0.992
τ_0.55	0.994
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.975

transmittance: 25 mm
τ_0.35	0.181
τ_0.36	0.518
τ_0.37	0.742
τ_0.38	0.864
τ_0.39	0.92
τ_0.4	0.947
τ_0.42	0.964
τ_0.44	0.971
τ_0.46	0.971
τ_0.48	0.975
τ_0.5	0.982
τ_0.55	0.985
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.94

Poisson coef.: 0.237
Rigidity: 301 Pa*10⁸
Young module: 745 Pa*10⁸
Knoop hardness: 476
Abrasion: 150

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	105