BaF12 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.639301 n_e = 1.642677	V_d = 44.98 V_e = 44.69	n_F - n_C = 0.014211 n_F' - n_C' = 0.014379	Coloring: 0.34 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.6263688 C2 = -0.0081822443 C3 = 0.021212967 C4 = 0.00015308351 C5 = 0.000043537326 C6 = -0.00000031692421

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.624430
n _s	1.627896
n _r	1.632709
n _C	1.635071
n _C'	1.635738
n _0.6328	1.636364
n _D	1.639176
n _d	1.639301
n _e	1.642677
n _F	1.649283
n _F'	1.650117
n _g	1.657359
n _h	1.664259
n _i	1.676459
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7487
P_C,A'	0.3301
P_d,C	0.2976
P_e,C	0.5352
P_g,d	1.2706
P_g,F	0.5683
P_h,g	0.4855
P_i,g	1.3439
P_C',t	0.7957
P_e,C'	0.4882
P_F',e	0.5235
P_i,F'	1.8535

transmittance: 10 mm
τ_0.34	0.138
τ_0.35	0.425
τ_0.36	0.663
τ_0.37	0.806
τ_0.38	0.88
τ_0.39	0.923
τ_0.4	0.947
τ_0.42	0.971
τ_0.44	0.981
τ_0.46	0.984
τ_0.48	0.987
τ_0.5	0.988
τ_0.55	0.992
τ_0.6	0.992
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.995

transmittance: 25 mm
τ_0.35	0.118
τ_0.36	0.357
τ_0.37	0.583
τ_0.38	0.728
τ_0.39	0.82
τ_0.4	0.874
τ_0.42	0.93
τ_0.44	0.954
τ_0.46	0.961
τ_0.48	0.968
τ_0.5	0.971
τ_0.55	0.982
τ_0.6	0.982
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.989

Poisson coef.: 0.185
Rigidity: 292 Pa*10⁸
Young module: 691 Pa*10⁸
Knoop hardness: 524
Abrasion: 170

Climatic resistance: 2
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	86